Open Source & Free Tools for Web Workers

Gajim is a free, open-source, and fully featured chat application designed for the XMPP protocol,. It is developed by volunteers using Python and GTK, making it compatible across Windows, MacOS, and Linux.

Here is a summary of its principal functionalities:

Core Communication and Privacy

• Encrypted Conversations: Gajim provides state-of-the-art end-to-end encryption for messages, pictures, and files to ensure they remain private between the users.

• Cross-Device Synchronization: Users can choose their preferred provider and synchronize their chats across all their devices.

• Interoperability: The app is designed to be interoperable with many other chat applications, allowing for a flexible communication experience.

Expressive and Social Features

• Rich Messaging: Beyond standard text, users can record voice messages, use reactions, send replies, and share status updates.

• Media Support: Recent updates have introduced previews for GIFs and similar animation formats, as well as improved file transfer capabilities.

• Group and Community Management: The tool supports group chats for organizing events or staying in touch with friends, as well as the ability to build communities around shared interests. It also features read markers within group chats to track conversation progress.

Technical and Community Aspects

• Open Source Development: The software is built and maintained by a community of volunteers and is available for translation and code contributions.

• Free and Accessible: Gajim is free software supported by user donations.

• Integrated Support: Users can join a dedicated XMPP chat to ask questions, share ideas, or report issues directly to the developers.

Gajim acts like a secure, community-built post office for the digital age: you are free to choose which branch (provider) you use, but regardless of your choice, your letters are locked in a high-security vault (encryption) that only the recipient can open, even if you are accessing your mailbox from different cities (devices).

Emissary is a standalone "Social Web Toolkit" and Fediverse server designed for individuals, developers, and administrators to participate in the decentralized web.

Here is a summary of its principal functionalities:

Multi-Network Connectivity

• Fediverse Integration: It acts as a "good citizen" on the Fediverse by supporting the ActivityPub protocol.

• RSS & IndieWeb: It supports Real-time RSS via WebSub for following news and blogs, as well as IndieWeb standards like MicroFormats and WebMentions for personal websites.

Programmability and Customization

• App Assembly: Developers can assemble custom applications using tested components and remix existing themes or templates.

• Distribution & Deployment: Packages can be distributed via Git or .zip files, and the system allows for the deployment of vetted packages from trusted sources,.

Privacy and Security

• Data Ownership: A core focus is on personal agency, allowing users to own their data and their social graph.

• Safety Tools: It includes powerful rules and follower-only feeds to protect users and limit the impact of malicious actors.

• Tailored Experience: The platform is designed to provide user choice without causing "decision overload".

Scalability and Infrastructure

• DevOps Ready: It supports easy, repeatable builds and deployments.

• Clustering: Emissary is cluster-ready, meaning it can start from a command line, configuration files, or a shared database.

• Efficient Scaling: To help small sites scale, it utilizes shared services such as a cache, queue, and crawler, all while maintaining minimal dependencies to simplify the environment.

Project Status

• The tool is currently in a technical preview (version 0.6.0), primarily intended for app creators and core developers.

Emissary acts like a "Swiss Army Knife" for the social web: instead of being locked into a single social media "walled garden," it provides you with the tools to build your own digital home, connect it to various neighborhoods (like the Fediverse or RSS feeds), and ensure the doors are locked and the data stays yours.

Waterfox is an open-source, privacy-focused web browser specifically designed for power users who require deep customization and control over their online experience.

The main features and functionalities of Waterfox include:

Advanced Privacy and Anonymity

• Oblivious DNS: Waterfox ships with a combination of encrypted and Oblivious DNS by default. This technology hides the user's identity from the resolver and their queries from network intermediaries.

• Zero Data Tracking: The browser operates with zero telemetry, zero analytics, and no remote experiments. It does not use "personalization" feeds or send surprise pings; only the code installed by the user runs on their machine.

• Private Tabs: Unlike traditional browsers that require a separate window for incognito browsing, Waterfox allows for individual private tabs. These isolated tabs can run alongside regular browsing and wipe all local traces once closed.

Built-in Power User Tools

• Extension-Free Customization: Many advanced features that typically require extensions are built directly into the browser, including layout controls, status bars, and tab management.

• Tree Vertical Tabs: A native implementation of tree-style vertical tabs is included. This system automatically organizes research trails by making links opened from a tab its "children," keeping branches tidy without manual dragging.

• Sophisticated Tab Management: Users can collapse busy tab sections, "focus mode" a single branch, or use keyboard shortcuts (Ctrl/Cmd + arrows) to promote, demote, or move tabs. It also features deep integration with tools like Session Manager and Multiple Tab Handler.

Customization and Control

• Deep Modification: The browser provides a foundation for high-level customization, offering options normally reserved for hidden flags or external add-ons.

• User Ownership: Waterfox emphasizes a "privacy-first" foundation where the user maintains total control over the browser's behavior and appearance.

Waterfox is like a high-end, custom-built workshop: while standard browsers provide a simple desk, Waterfox comes with professional-grade tools already built into the walls and tinted windows that ensure everything you do inside remains completely shielded from outside observers.

Serialit is a free, open-source web service designed to deliver periodical newsletters featuring public domain literary works.

Here is a summary of its principal functionalities:

Core Functionality and Delivery

• Serialized Reading: Serialit allows users to create a newsletter based on a public domain literary work.

• Content Segmentation: The selected work is automatically cut into chunks (segments defined by chapters or a specific number of words).

• Scheduled Delivery: The newsletter is sent at a selected frequency to the creator and all confirmed subscribers.

• Goal: The service aims to bring literature directly to the inbox, replicating a 19th-century serialized novel experience or facilitating a synchronized reading with friends.

• Automation: Once the newsletter is created, the service sets up a cron job triggered at the specified frequency, which sends the excerpt and keeps track of the progress within the literary work.

Content Source and Access

• Current Source Limitation: Currently, Project Gutenberg is the only source Serialit supports for literary works.

• Availability: Thousands of literary works available in the public domain on Project Gutenberg can be used.

• AI Policy: The service does not use AI.

Subscription Management and Consent

• Creation Process: Creating a newsletter involves three steps: choosing a work on Project Gutenberg, defining the text amount/frequency/recipients, and confirming the subscription via an email link.

• Consent Requirement: Both the creator and any other potential subscribers must validate their subscription to receive the emails, ensuring proper consent is obtained.

• Data Stored: The only personal data stored is the email address to which the newsletter is sent.

• Unsubscribing: Subscribers can stop receiving the newsletter by clicking the Unsubscribe link at the bottom of the email.

• Creator's Impact: If the creator of the newsletter unsubscribes, all other subscribers will also be unsubscribed and cease receiving the installments.

Planned Future Features

The service plans to introduce several new functionalities:

• An email-based login system to allow users to manage their created newsletters and subscriptions.

• The ability to change the newsletter frequency.

• The capability to add or remove subscribers from a created newsletter.

• Support for more formats and sources of literary works beyond Project Gutenberg.

Blog Quest is a browser extension designed to help users automatically collect RSS and Atom feeds as they browse the web.

Here is a summary of its main features and functionalities:

Core Functionality and Operation

• Automatic Feed Collection: Blog Quest quietly collects feed URLs by scanning pages for rel="alternate" links, which blogs use to reference their RSS feeds.

• Passive Browsing: Users browse the web as usual, and the extension builds a collection of blogs in the background.

• Calm Technology: The tool is designed not to compete for attention, allowing users to explore the collected feeds only when they are ready.

• Pop-up View: Clicking the extension opens a pop-up window that displays the list of all collected feeds.

• Availability: The extension is available for download on Chrome and Firefox.

Integration and Export

• OPML Export: It supports OPML export, allowing users to easily import all discovered feeds into many standard feed readers.

• Custom Subscription: The "Subscribe Using" feature lets users choose how collected feeds are opened.

• Reader Presets: It offers presets for quick integration with popular services like Feedly, FeedLand, and Inoreader.

• Custom Template Support: Users can integrate custom feed readers by defining a subscription URL template where {feedUrl} is replaced by the actual RSS or Atom feed's URL.

Privacy and Licensing

• Strict Privacy: Blog Quest commits to privacy; nothing leaves the user's device.

• No Analytics/Server: It runs entirely within the browser, never collects analytics, and does not require a server to operate.

• Open Source: The project is open-source under the MIT license.

GitHub Platform Features (Context)

As the project is hosted on GitHub, it also leverages the platform's developer tools:

• AI and Code Tools: Includes access to features like GitHub Copilot (to write code with AI), GitHub Spark (to build intelligent apps), and GitHub Models (to manage and compare prompts).

• Developer Workflow: Supports standard workflows like Actions (to automate workflows), Codespaces (for instant dev environments), Issues (to plan and track work), and Code Review (to manage code changes).

• Security: Offers GitHub Advanced Security features to find and fix vulnerabilities.

• Search Functionality: Users can search code, repositories, users, issues, and pull requests, and use saved searches to filter results more quickly.

Wafrn is an open-source, federated social media platform designed to be a Tumblr alternative that emphasizes user respect and customization,,.

Here are the main features and functionalities of Wafrn:

1. Interoperability and Federation

• Dual Protocol Support: Wafrn connects simultaneously with both the Fediverse (using the ActivityPub protocol) and Bluesky (using the ATProtocol),.

• Native Bluesky Integration: Unlike much of the Fediverse, Wafrn offers native Bluesky Integration,. This means that Bluesky users do not need to opt-in to a bridge to interact with Wafrn users.

• Seamless Interaction: The native integration allows for the smooth flow of replies, likes, and boosts between Wafrn and Bluesky users,. Posts can be made visible on both Bluesky and Mastodon.

• User and Data Portability: Users can keep all their data (posts, followers, likes, lists) when moving between ATProtocol-based sites (like Blacksky or Northsky),. If a user migrates from Bluesky to Wafrn, their posts, friends, and followers are preserved. This portability is cited as a way to escape "enshittification".

2. User Experience and Customization

• Theming and Custom CSS: Wafrn is highly focused on customization, allowing users to apply custom CSS to their profile, which then sets the default theme across their entire site view,. The default interface often resembles the Tumblr dashboard,.

• Feeds: The platform offers three main feeds: the Dashboard (focused on followed accounts), Explore Wafrn (local Wafrn accounts), and Wafrn & Friends (combining local content with posts from other federated servers like Mastodon, Friendica, and Bluesky),.

• Custom Feeds (Future): There is expressed interest in supporting Bluesky’s Custom Feeds for better discovery,.

3. Posting, Content, and Format

• Rich Formatting: Posts support a mix of Markdown (including CommonMark) and various HTML tags for formatting.

• Inline Media: Users can embed media directly within the text of their posts using a specific markup (![media-{number}]).

• Accessibility and Media: The platform takes accessibility seriously, requiring descriptions for images or videos (alt text). Posts are limited to displaying four pieces of media for Mastodon and Bluesky users.

• "Tumblr-isms": Includes unique, playful features that capture a chaotic energy,:

  • Asks: A Question-and-Answer feature where any Fediverse account can submit questions, which appear in a special tab for the user to answer.

  • Bites: A "silly feature" resembling a poke that generates cute notifications,.

  • AI Filter: Allows users to transform the word “AI” to “cocaine” or another word using a custom filter,.

4. Privacy, Security, and Ethos

• Anti-AI Policy: Wafrn does not sell data for AI training, nor does it accept contributions involving AI generated artwork, code or text,,.

• Post Privacy Options: Supports several levels of visibility: Public, Unlisted, This Instance Only, Followers-Only, and Direct Message (which is explicitly stated as not End-To-End-Encrypted).

• Public Content Risk: The platform warns that public posts on Wafrn, especially those sent to Bluesky, cannot be prevented from being scraped by AI companies or others,.

• Open Source Commitment: The code is public under the AGPLv3 (backend) and Apache License 2.0 (frontend),.

5. Technical and Miscellaneous

• Multi-Platform Access: Mobile apps are available for Android (via F-Droid, IzzyOnDroid) and Apple (App Store, Testflight).

• Easter Egg: A "Super Secret Menu" contains an embedded WASM build of DosBox running a copy of Doom,.

rssrssrssrss is designed to combine multiple RSS feeds into one unified feed.

Here is a summary of its main features and functionalities:

Core Functionality

• Feed Merging: The primary function is to combine multiple RSS feeds into one unified feed.

• Interleaving Content: This simple tool specifically addresses the need to interleave multiple RSS feeds, which the sources note "relatively few things do a great job of".

Input and Editing

• Adding Feeds: Users can add RSS feeds by entering one RSS feed URL per line in the provided input box.

• Editing Existing Feeds: Users can also paste an existing merged feed URL to edit it.

Output and Security

• Permalink Generation: Once the feeds are added and reviewed, the user can generate a permalink.

• Encoding: This permalink is a base-64 encoded URL of the feeds. The source mentions this encoding helps ensure "no real worry about bitrot".

User Experience and Technical Details

• Preview: The service provides a preview of the merged feed so users can ensure the output is what they want.

• Open Source: The tool is open source.

• Creator: It was built by Buttondown.

• Alternative Name: Users may also refer to it as "rss4".

Self.so - Resume to Website is an application focused on rapidly creating professional online presence.

Here is a summary of its main features and functionalities:

• Core Functionality: Self.so is designed to turn your resume or LinkedIn profile into a professional website.

• Rapid Conversion: The conversion process is designed to be extremely fast. It can create a LinkedIn website in one click, and uploading a standard resume to initiate the process takes 1 minute.

• Accessibility and Licensing: The service is 100% free and open source.

Exportify is an open-source web application designed to Export/Backup Spotify playlists using the Web API. It addresses the lack of a native export/archive/backup function within the standard Spotify client.

Here are the principal functionalities and features of Exportify:

Core Functionality and Architecture

• Purpose: Exportify provides a simple interface for exporting Spotify playlists.

• Privacy and Data: No data will be saved; the entire application runs in the browser.

• Access: It requires users to grant read-only access to their Spotify playlists.

• Output Format: Playlists are exported in UTF-8 encoded CSV format.

• Mass Export: Users can click 'Export All' to save a zip file containing a CSV file for each playlist in their account.

• Rate Limiting: It includes advanced rate limiting handling for speedy exports.

• Compatibility: The application is Mobile friendly.

• Licensing: Exportify is released under the MIT license.

Export Data and Customization

The exported track data includes standard fields from the Spotify track object such as Track URI, Track Name, Artist URI(s), Artist Name(s), Album Name, Album Release Date, Track Duration (ms), Popularity, ISRC, Added By, and Added At.

Users can optionally include additional data by clicking the settings cog:

• Artist Data: Adds Artist Genres.

• Audio Features Data: Adds analytical data such as Danceability, Energy, Tempo, Loudness, Key, and Valence.

• Album Data: Adds fields from the full Spotify album object, including Album Genres, Label, and Copyrights. (Note: Exporting more data will increase the time taken for the export).

Playlist Management and Usage

• Re-Importing: Users can re-import saved playlists by opening the CSV file, copying the spotify:track:xxx URIs, creating a new playlist in Spotify (tested with the desktop app), and pasting the URIs.

• Search Facility: A search facility allows users to quickly find specific playlists by name.

  • Searching is case-insensitive.

  • Advanced Search Syntax is supported, allowing filtering by status (e.g., public:true, collaborative:false) or owner (owner:me, owner:[owner]).

  • Search results can be exported as a zip file by clicking "Export Results".

Interface and Development

• Localization: Exportify is available in 10 languages.

• Display: It features a Dark mode.

• Technology Stack: The application is built using a Modern React-based development stack. The primary language is TypeScript (96.1%). It utilizes tools like Bootstrap 5, Font Awesome 6, and react-i18next.

• Deployment: The application can be built and run using Docker.

• Caveat: The tool is limited by the Spotify Web API, which currently does not return folders.

• Disclaimer: The project is not affiliated with Spotify.

wanderer is a decentralized, self-hosted trail database. It is designed as a platform for planning, recording, and cataloguing outdoor adventures, emphasizing user control and privacy.

Here are the principal functionalities and features of wanderer:

1. Core Purpose and Data Management

• Trail Database: wanderer is primarily a trail database. Users can upload their recorded GPS tracks or create new ones.

• Catalogue Creation: It allows users to add various metadata to tracks to build an easily searchable catalogue.

• Planning and Recording: It makes it easy to plan, record, and revisit adventures. Users can draw new routes and access their trail data from any device.

• Data Control: Users maintain full control over their data.

2. Privacy, Architecture, and Hosting

• Privacy-First: wanderer is Self-hosted and open-source. It is guaranteed to be Privacy-first, always, with no tracking, no vendor lock-in, and no compromises. The trails remain on the user's server.

• Decentralization: It is built on the ActivityPub protocol, enabling instances to connect with others to share trails, profiles, and updates.

• Open Source: wanderer is a passion project and will always remain free and open-source.

3. Integration and Import

• Third-Party Import: wanderer has built-in support for importing existing trail history directly from Komoot or Strava. This allows users to consolidate their outdoor journeys in one place.

• No Conversion Needed: The import process requires no file conversions.

4. Social and Community Features

• Federated Interaction: Through ActivityPub, users can follow users across the network, discover new trails from different communities, and interact seamlessly with other federated platforms like Mastodon.

• Sharing and Engagement: Users can follow other users to see their latest routes, like and comment on trails, and get notified when someone adds something new.

5. Technical Features and Development

• API: It provides a comprehensive JSON API. This API can be used to automate workflows or build on top of wanderer, allowing users to access, modify, and query trail data programmatically.

• Contribution: Help is welcome, and users can contribute translations or check the GitHub repository for features in the backlog.

Open Notebook is a powerful open-source, AI-powered note-taking/research platform that respects your privacy. It is designed to act as a "cognitive partner" for researchers, students, and professionals.

The principal functionalities of Open Notebook are:

1. AI-Powered Learning and Cognitive Assistance

• AI-Powered Notes: The platform leverages AI to summarize, generate insights, and manage your notes.

• Enhanced Comprehension: It is aimed at learning enthusiasts who seek to build deep, lasting comprehension.

• Learning Partner: It functions as a tailor-made AI partner designed to improve the learning process and provoke users to think more clearly.

• Backlog Management: It helps users manage a large learning backlog (e.g., hundreds of links) by ensuring these items are catalogued for future need.

• Skill Development: The platform’s end goal is to build a Cognitive Partner that helps individuals develop their skills, knowledge, and opinions.

2. Comprehensive Privacy and Control

• Privacy Control: Open Notebook prioritizes privacy, giving users full control over what information AI can access.

• Self-Control: Users maintain complete control over workflows, models, and how their data gets used and exposed.

• Custom Interaction: Users can decide how their content is handled and which AI models they want to interact with.

• Data Security: The platform caters to privacy-aware users who do not want their context, thoughts, and plans disseminated across Big Tech.

3. Content Integration and Transformation

• Podcast Generation: It includes a Podcast Generator feature to transform notes into engaging podcasts with customizable voices, speakers, and episodes.

• Content Integration: The platform supports integration for various content types, including links, PDFs, TXT, PPT, YouTube, and more.

OmniTools (omni-tools) is a self-hosted collection of powerful web-based tools for everyday tasks. Its core philosophy is to provide fast, accessible utilities right from your browser while ensuring no ads and no tracking.

The principal functionalities and features of OmniTools are:

1. Core Purpose and Privacy

• Utility Collection: OmniTools offers a variety of online tools to simplify everyday tasks, covering areas like coding, manipulating images/videos, PDFs, and crunching numbers.

• Privacy-First Design: The platform is built with privacy in mind: All files are processed entirely on the client side, meaning nothing ever leaves your device.

• Open Source: The project is licensed under the MIT License.

2. Specific Tool Categories

OmniTools functions as a "swiss army knife" by offering a range of utilities, including:

CategorySpecific Tools/FunctionalitiesImage/Video/Audio ToolsImage Resizer, Image Converter, Image Editor, Video Trimmer, Video Reverser, and more.PDF ToolsPDF Splitter, PDF Merger, PDF Editor, and more.Text/List ToolsCase Converters, List Shuffler, Text Formatters, and more.Date and Time ToolsDate Calculators and Time Zone Converters, and more.Math ToolsGenerate Prime Numbers, Calculate voltage, current, or resistance, and more.Data ToolsJSON Tools, CSV Tools, XML Tools, and more.

3. Deployment and Technical Features

• Self-Hosting: OmniTools is designed to be self-hosted.

• Easy Deployment: The easiest way to run the tool is using Docker or Docker Compose. The official Docker image is described as super lightweight at just 28MB, making it fast to deploy.

• Technology Stack: The project is a React Project with Typescript Material UI. The code base is primarily composed of TypeScript (83.2%) and JavaScript (16.6%).

• Development Features: The project supports developer contributions, including creating new tools via scripts, running tests (including e2e tests), and managing translations (i18n).

RSS Please (rsspls), is a command line tool primarily designed to generate RSS feeds from web pages.

Its principal functionalities and characteristics are:

Core Functionality

• Feed Generation: The main purpose of RSS Please is to generate new RSS feeds from existing web pages.

• Content Extraction: It uses CSS selectors to extract specific parts of the web page and convert that extracted information into a usable feed format.

Use Cases

The tool enables users to monitor content updates on websites that lack their own official RSS feeds, including:

• Creating a feed for a blog that does not have one to track new posts.

• Generating a feed from search results (e.g., on a real estate agent’s website) to monitor new listings.

• Creating a feed of upcoming tour dates for a band or DJ.

• Generating a feed for a company's product page to be notified when new products are added.

Technical and Deployment Features

• Platform Compatibility: RSS Please is a cross-platform tool that runs on Linux, macOS, Windows, BSD, and more.

• Dependencies: It does not require a runtime or dependencies. It is implemented in Rust and is distributed as a single-file native binary.

• Subscription: Users can subscribe to the generated feeds in their feed reader. This is accomplished either by referring to them locally or by publishing them on a web server.

• Licensing: The project is dual licensed under either the Apache License, Version 2.0 or the MIT license.

N.eko, is a self-hosted virtual browser that runs in Docker and leverages WebRTC technology. Its core function is to provide a fully-functional browser running in a virtual environment, offering secure and private internet access.

The principal functionalities of n.eko include:

Performance and Core Technology

• Ultra Low Latency Streaming: The tool provides near real-time streaming with less than 300ms latency due to WebRTC, ensuring smooth video playback and synchronized audio.

• The architecture allows the tool to run a fully-functional browser in a virtual environment.

Security and Privacy Features

• Persistent Browser: Users can keep their browser session alive and resume work from any device without losing progress, ideal for long-running tasks (like downloads or monitoring). Crucially, no local data is stored on the client side, and cookies and session data remain protected.

• Throwaway Browser: This feature allows users to access websites without leaving a trace, as every session runs in an isolated environment and is destroyed afterward (no history, cookies, or cache remains). It minimizes OS fingerprinting and browser exploits by running in a secure container.

• Intellectual Property Protection: Because n.eko uses WebRTC to share only video and audio, it protects intellectual property (like websites, AI models, or software) because the code is not running on the client machine, preventing reverse-engineering.

• Secure Internet Access: It is designed to provide secure and private internet access. For the user's ISP, the activity appears simply as watching a video or being on a call, helping keep activity private.

Collaboration and Control

• Multi-Participant Control: Multiple users in a room can share control with each other, though the host retains the ability to grant or deny control requests.

• Watch Party: This allows multiple people to watch video content together and react in real-time.

• Interactive Presentation: Users can share their screen and allow others to control it, which is ideal for collaborative work or interactive teaching.

• Collaborative Tool: It enables teams to brainstorm ideas, co-browse, and debug code together, enhancing collaboration with real-time synchronization.

• Support/Teaching: It facilitates interactive guidance in a controlled, remote environment.

Automation and Integration

• Automated Browser: Users can install Playwright or Puppeteer to automate tasks while maintaining the ability to actively intercept them.

• Live Broadcasting: The tool can stream the room's content live via RTMP to platforms such as Twitch and YouTube. The host maintains full control over the stream (setting URL/key, starting/stopping), and 24/7 broadcasting is possible even without active participants.

• Embed Anything: It allows users to embed a virtual browser into their web application, with flawless synchronization of audio and video for any third-party website or application.

• Jump Host for Internal Resources: It can be used to access internal resources (servers, databases, websites) from a remote location. Session activities can be recorded for auditing and compliance, and it ensures no data is left on the client side, minimizing data leakage and reducing the attack surface.

HandBrake is an open-source video transcoder available for Linux, Mac, and Windows. It is a free, post-production tool whose primary function is to convert videos from supported source formats into new files that work on nearly any modern device, including mobile phones, tablets, TVs, game consoles, computers, and web browsers.

The principal functionalities of HandBrake are:

Core Conversion and Output

• Video Conversion: HandBrake converts nearly any video file or format (including files from consumer cameras, professional cameras, mobile devices, and DVD/Blu-ray discs).

• Output Formats: The tool creates new video files specifically in MP4, MKV, or WebM formats.

• Size Reduction: It can make videos that are smaller than the originals, reducing the required storage space on a device.

• Leveraged Tools: It leverages tools such as FFmpeg libavcodec and libavformat libraries, x264, x265, and svt-av1 to create new files.

Video Enhancement and Customization

• Cropping and Resizing: Users can crop and resize video.

• Restoration: It can restore old and low-quality video.

• Artifact Removal: It can remove combing artifacts caused by interlacing and telecine.

Audio and Subtitle Management

• Audio Pass-through: It can pass-through audio without conversion for certain audio types.

• Audio Downmixing: It can downmix discrete surround sound to matrixed surround or stereo.

• Audio Adjustment: It allows users to adjust audio volume levels and dynamic range for certain audio types.

• Subtitles: It can preserve existing subtitles and add or remove soft subtitles (subtitles stored as text).

Limitations (What HandBrake does not do)

It is important to note that HandBrake does not:

• Combine multiple video clips into one.

• Pass-through video without conversion (video is always converted).

• Create Blu-ray, AVCHD, or DVD discs.

• Defeat or circumvent copy protection (DRM). It will not work with copy-protected content from services like iTunes, Amazon Video, or Netflix, or many commercial DVD and Blu-ray discs.

Musify is an open-source music app developed for Android.

Its main characteristics include:

• Music Access: It offers both streaming and offline listening capabilities.

• Features: Users can enjoy custom playlists and benefit from lyrics support.

• Audio Quality: It provides high-quality audio.

• Cost Model: Musify is completely free, operating with no ads or subscriptions.