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AddA small JavaScript library to create and animate annotations on a web page
Rough Notation uses RoughJS to create a hand-drawn look and feel. Elements can be annotated in a number of different styles. Animation duration and delay can be configured, or just turned off.
Excel-like DataGrid component for React JS. Built for high performance rendering similar to google sheets.
The lightweight, user-friendly, distributed relational database built on SQLite. Fault tolerance and high availability with zero hassle.
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The Rspack-based Build Tool. Speed up your webpack application.
Rsbuild is an Rspack-based build tool for the web. Rsbuild is an enhanced Rspack CLI, which is more user-friendly and out-of-the-box. Rsbuild is the Rspack team's exploration and implementation of best practices for web building. Rsbuild is the best solution for migrating from Webpack to Rspack, reducing configuration by 90% and getting 10x build speed.
Build Analyzer. Analyzer for Rspack & webpack.
Visualize the building process.
Rsdoctor is a build analyzer tailored for the Rspack ecosystem and fully compatible with the webpack ecosystem.
Rsdoctor is committed to being a one-stop, intelligent build analyzer that makes the build process transparent, predictable, and optimizable through visualization and smart analysis, helping development teams precisely identify bottlenecks, optimize performance, and improve engineering quality.
🚀 Go Faster. Go Typed.
Think of Rslint as Rust Clippy but for TypeScript — more like a TypeScript extension than an ESLint plugin.
Rslint is a high-performance JavaScript and TypeScript linter written in Go. It offers strong compatibility with the ESLint and TypeScript-ESLint ecosystem, allowing for seamless replacement, and provides lightning-fast linting speeds.
The open content licensing standard for the AI-first Internet
Really Simple Licensing (RSL) is an evolution of the early ideas behind the widely adopted RSS standard, which provided a machine-readable framework for publishers to syndicate content to third-party clients and crawlers in exchange for traffic.
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Fast, free and open-source spam filtering system.
Rspamd is an advanced spam filtering system and email processing framework that allows evaluation of messages by a number of rules including regular expressions, statistical analysis and custom services such as URL black lists. Each message is analysed by Rspamd and given a verdict that might be used by MTA for further processing (e.g. to reject a message, or add a special header indicating spam) along with other information, such as possible DKIM signature or modifications suggested for a message.
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Transform RSS feeds into beautiful reading formats for a better reading experience.
RSS.Beauty is an RSS beautification tool based on XSLT technology that transforms ordinary RSS/Atom feeds into elegant reading interfaces.
RSS-Bridge is a PHP project capable of generating RSS and Atom feeds for websites that don't have one. It can be used on webservers or as a stand-alone application in CLI mode.
The RSS feed for websites missing it.
RSS-Bridge is a PHP web application.
It generates web feeds for websites that don't have one.
RSS-lambda transforms RSS feeds without RSS client lock-in.
There are RSS clients that can perform transformations on RSS feeds, e.g. only keep entries with certain keywords, or translate texts of the entries
However, using those features from the RSS clients will create RSS client lock-in that prevents you from moving to another RSS client if you desire
RSS-lambda is an application that perform transformations on the server-side instead so that you can freely move to another RSS client while keeping the transformations. It's also self-hostable so that you don't even need to rely on the official server instance!
rsync is an open source utility that provides fast incremental file transfer.
An open source utility that provides fast incremental file transfer. It also has useful features for backup and restore operations among many other use cases.
rsync is freely available under the GNU General Public License and is currently being maintained by Andrew Tridgell.
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A rich web-based Ring Tone Text Transfer Language (RTTTL) composer.
The RTTTL format is still used today in some applications and devices such as hobbyist Arduino projects, IoT devices, and older mobile phones.
Modernize your VBE with enhanced project navigation and organization, static code analysis, unit testing, refactorings, and other modern-day essential functionalities.
The Ruby Linter/Formatter that Serves and Protects.
RuboCop is a Ruby code style checker (linter) and formatter based on the community-driven Ruby Style Guide.
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Rubular is a Ruby-based regular expression editor. It's a handy way to test regular expressions as you write them.
your community gem host.
RubyGems.org is the Ruby community’s gem hosting service. Instantly publish your gems and then install them. Use the API to find out more about available gems. Become a contributor and improve the site yourself.
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A delightful Ruby way to work with AI through a unified interface to OpenAI, Anthropic, Google, and DeepSeek. A delightful Ruby way to work with AI. No configuration madness, no complex callbacks, no handler hell – just beautiful, expressive Ruby code.
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Free, interactive tutorials to help you discover Ruby idioms, in your browser!
turn your Ruby on Rails app into a mobile app.
Ruby Native turns a Rails app into iOS and Android apps. This gem is the Rails-side integration: view helpers, a YAML config file, endpoints auto-mounted at /native, and a CLI for previewing and deploying builds. Full docs, including the complete helper reference and config schema, live at rubynative.com/docs.
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Ruby Next makes modern Ruby code run in older versions and alternative implementations
Ruby Next is a transpiler and a collection of polyfills for supporting the latest and upcoming Ruby features (APIs and syntax) in older versions and alternative implementations. For example, you can use pattern matching and Kernel#then in Ruby 2.5 or mruby.
A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.
Related contents:
- The Unofficial 37signals/DHH Rails Style Guide @ Marc Köhlbrugge's GitHub Gist.
- Making the case for Rails monoliths over microservices @ thoughtbot.
- Part 1: How We Fell Out of Love with Next.js and Back in Love with Ruby on Rails & Inertia.js @ Hardcover.
- The One-Person Framework in practice @ Bram Jetten.
- Serving Large Files in Rails with a Reverse Proxy Server @ Write Software, Well.
- My puts Debugging Workflow in Rails Apps @ Paweł Urbanek.
- Tip: Put your Rails app on a SQL query diet @ Andrew Atkinson.
- Ruby on Rails: The Open-Source Blueprint @ The Miners.
- Engineering excellence starts on edge @ David Heinemeier Hansson.
- You're doing Rails wrong @ Banana Curving Machine.
- The Rails developers' guide to mobile app frameworks @ Masilotti.com.
- How I Audit a Legacy Rails Codebase in the First Week @ piechowski.io.
- Returning To Rails in 2026 @ markround.com.
- Different Approaches to Debugging Query Performance in Rails @ Saeloun.
- Rails 8: How to Auto-Generate Social Media Preview Cards @ DevBlog by Zil Norvilis.
- Scaling Rails at Aura Frames: Splitting to 8 Primary DBs and Reaching #1 in the App Store @ Andrew Atkinson.
Component Library. Ruby gem for RubyUI Components.
A UI component library, crafted precisely for Ruby devs who want to stay organised and build modern apps, fast. Beautifully designed components that you can copy and paste into your apps. Accessible. Customizable. Open Source.
Understand how your team codes with AI. Coding Agent Analytics for Claude Code.
Rudel gives engineering leaders visibility into Claude Code usage across their team. Track productivity, quantify ROI, and surface quality signals, automatically.
Exploring memory safety that's easier to use.
A programming language that is higher level than Rust but lower level than Go. Someday, anyways.
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An open source Flash Player emulator.
Made to run natively on all modern operating systems and browsers, Ruffle brings Flash content back to life with no extra fuss.
Create bootable USB drives the easy way.
Rufus is a utility that helps format and create bootable USB flash drives.
A drop-in javascript spreadsheet library that provides rich features like Excel and Google Sheets.
The goal of FortuneSheet is to make a feature-rich, easy-to-configure online spreadsheet that you can use out-of-the-box.
This project is originated from Luckysheet and has inherited many code from it. Lots of efforts have done to translate the whole project to typescript (still in progress), and solved problems in the design of the original project.
One command. 25 languages. Universal multi-language runner and smart REPL written in Rust.
A universal code runner and stateful REPL written in Rust. Execute Python, JavaScript, TypeScript, Go, Rust, C, C++, Java, Kotlin, Swift, and 15 more languages with a single command.
Runme runs Markdown. DevOps Notebooks Built with Markdown.
Runme is a tool that makes runbooks actually runnable, making it easier to follow step-by-step instructions. Shell/bash, Python, Ruby, Javascript/Typescript, Lua, PHP, Perl, and many other runtimes are supported via Runme's shebang feature. Runme allows users to execute instructions, check intermediate results, and ensure the desired outputs are achieved. This makes it an excellent solution for runbooks, playbooks, and documentation that requires users to complete runnable steps incrementally—making operational docs reliable and much less susceptible to bitrot.
runn ( means "Run N". is pronounced /rʌ́n én/. ) is a package/tool for running operations following a scenario.
Key features of runn are:
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As a tool for scenario based testing.
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As a test helper package for the Go language.
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As a tool for workflow automation.
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Support HTTP request, gRPC request, DB query, Chrome DevTools Protocol, and SSH/Local command execution
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OpenAPI Document-like syntax for HTTP request testing.
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Single binary = CI-Friendly.
Secure code execution for AI applications.
run executes untrusted JavaScript and type-stripped TypeScript in a hardened QuickJS sandbox. Guest code can access only the host functions you provide.
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Cut Your GitHub Actions Bill by 90%.
Self-hosted GitHub Actions runners made simple. For AWS. 10x cheaper, 30% faster, and unlimited caching. Best alternative to Actions Runner Controller.
RunsOn is the modern way to run self-hosted GitHub Actions runners of any size, at the cheapest price available. Think of it as your best alternative to the Actions Runner Controller (ARC) for Kubernetes, the Philips terraform module, or any of the third party providers that require deep access to your code and secrets.
Terrascan is a static code analyzer for Infrastructure as Code.
Detect compliance and security violations across Infrastructure as Code (IaC) to mitigate risk before provisioning cloud native infrastructure.
Homeserver management made easy.
Runtipi is a homeserver for everyone! One command setup, one click installs for your favorites self-hosted apps. ✨ Free and open-source, runtipi lets you install all your favorite self-hosted apps without the hassle of configuring and managing each service. One-click installs and updates for more than 200 popular apps.
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Next-generation creation suite. Everything you need to make content, fast. Magical AI tools, realtime collaboration, precision editing, and more. Your next-generation content creation suite.
Schedule, supervise, observe. One binary.
Cron job manager + process supervisor in a single binary. Web dashboard, TUI, retries, failure notifications. crond/supervisord replacement
Rush makes life easier for JavaScript developers who build and publish many packages from a common Git repo. If you're looking to break up your giant application into smaller pieces, and you already realized why it doesn't work to put each package in a separate repo... then Rush is for you!
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Open-Source Remote Desktop with Self-Hosted Server Solutions. The Fast Open-Source Remote Access and Support Software
Switch from TeamViewer, AnyDesk, and Splashtop to RustDesk for a secure and reliable remote desktop experience with your own self-hosted servers.
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High-Performance Distributed Storage System Built with Rust.
🚀2.3x faster than MinIO for 4KB object payloads. RustFS is an open-source, S3-compatible high-performance object storage system supporting migration and coexistence with other S3-compatible platforms such as MinIO and Ceph.
RustFS is a high-performance, distributed object storage system built in Rust—one of the most loved programming languages worldwide. RustFS combines the simplicity of MinIO with the memory safety and raw performance of Rust. It offers full S3 compatibility, is completely open-source, and is optimized for data lakes, AI, and big data workloads.
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Rust LSP that doesn't eat memory for breakfast.
Rust Glancer is a memory efficient LSP for Rust. It uses a different approach compared to rust-analyzer: instead of storing everything in memory and recomputing dynamically, it uses frozen workspaces that can be offloaded to the filesystem. As a result, the LSP gets some performance penalty, but is able to achieve extreme memory efficiency and instant restarts.
Rust Glancer is an experimental LSP implementation that tries to use a different architecture compared to rust-analyzer in order to lower RAM usage and make editor restarts faster.
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🐉 Making Rust a first-class language and ecosystem for GPU shaders 🚧
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fast, encrypted, and deduplicated backups.
rustic is a backup tool that provides fast, encrypted, deduplicated backups. It reads and writes the restic repo format described in the design document and can be used as a restic replacement in most cases.
Create book from markdown files. Like Gitbook but implemented in Rust.
mdBook is a command line tool to create books with Markdown. It is ideal for creating product or API documentation, tutorials, course materials or anything that requires a clean, easily navigable and customizable presentation.
A language empowering everyone to build reliable and efficient software.
Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.
Related contents:
- Pitfalls of Safe Rust @ corrode.
- Does using Rust really make your software safer? @ tweede golf.
- Matt Godbolt sold me on Rust (by showing me C++) @ Collabora.
- Rust Dependencies Scare Me @ Vincents.dev.
- Why doesn't Rust care more about compiler performance? @ Kobzol's blog.
- Is Rust faster than C? @ Steve Klabnik.
- "Why is the Rust compiler so slow?" @ sharnoff.io.
- On Error Handling in Rust @ Felix' Blog.
- Tree Borrows @ ETHzürich.
- The borrowchecker is what I like the least about Rust @ viralinstruction.
- Rust running on every GPU @ Rust GPU.
- Stages of Learning Rust @ bigboxSWE's YouTube.
- Writing a Rust GPU kernel driver: a brief introduction on how GPU drivers work @ Collabora.
- Rust, Python, and TypeScript: the new trifecta @ baby steps.
- The unexpected productivity boost of Rust @ Lubeno.
- Why Everyone's Switching to Rust (And Why You Shouldn't) @ ForrestKnight's YouTube.
- Elements of Rust – Core Types and Traits @ RustCurious.com.
- Rust is easy? Go is… hard? @ Bryan Hyland's Medium.
- the core of rust @ the website of jyn.
- Faster Rust builds on Mac @ Nicholas Nethercote.
- No Extra Boxes, Please: When (and When Not) to Wrap Heap Data @ hackintoshrao.
- Let's write a macro in Rust - Part 1 @ hackeryarn.
- Rust 2025: $400K Salaries, C++, AI & Why It's Not Everywhere (Yet) — Jon Gjengset Explains @ JetBrains et Jon Gjengset's YouTube.
- The state of the Rust dependency ecosystem @ Frank DENIS random thoughts.
- Memory Safety for Skeptics @ acmqueue.
- Rust in Android: move fast and fix things @ Google Security Blog.
- What Now? Handling Errors in Large Systems @ Marc's Blog.
- Thoughts on Go vs. Rust vs. Zig @ Sinclair Target.
- Stop Forwarding Errors, Start Designing Them @ FastLabs / Blog .
- Pourquoi les devs réécrivent tout avec ce langage ? @ Underscore_'s YouTube.
- Rust at Scale: An Added Layer of Security for WhatsApp @ Engineering at Meta.
- Pourquoi les devs réécrivent tout avec ce langage ? @ Underscore_'s YouTube :fr:.
- Rewriting Our Database in Rust @ The Airtable Engineering Blog's Medium.
- Using Rust and Postgres for everything: patterns learned over the years @ Sylvain Kerkour.
- Bugs Rust Won't Catch @ corrode.
- Async Rust never left the MVP state @ tweede golf.
- Migrating from Go to Rust @ corrode.
- Work In Progress Rust @ Naming is hard.
Efficient and minimal collaborative code editor, self-hosted, no database required.
Rustpad is an efficient and minimal open-source collaborative text editor based on the operational transformation algorithm. It lets users collaborate in real time while writing code in their browser. Rustpad is completely self-hosted and fits in a tiny Docker image, no database required.
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RustPython is a Python interpreter written in Rust. RustPython can be embedded into Rust programs to use Python as a scripting language for your application, or it can be compiled to WebAssembly in order to run Python in the browser. RustPython is free and open-source under the MIT license.
High-Performance Data Grid for Vue, React, Angular, Svelte, and JavaScript. RevoGrid is a high-performance JavaScript Data Grid built for massive datasets. 60fps, 3x less memory
The React Framework for Cloudflare.
RedwoodSDK is a React framework for building server-side web apps on Cloudflare.
JavaScript Database. A fast, local first, reactive Database for JavaScript Applications.
RxDB (short for Reactive Database) is a local-first, NoSQL-database for JavaScript Applications like Websites, hybrid Apps, Electron-Apps, Progressive Web Apps, Deno and Node.js.
Reactive Extensions Library for JavaScript.
RxJS is a library for composing asynchronous and event-based programs by using observable sequences. It provides one core type, the Observable, satellite types (Observer, Schedulers, Subjects) and operators inspired by Array methods (map, filter, reduce, every, etc) to allow handling asynchronous events as collections.
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A free and open-source resume builder.
A free and open-source resume builder that simplifies the process of creating, updating, and sharing your resume. A one-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable, portable, open-source and free forever. Try it out today!