React Tiny Link helps developers write, search, review, test, or manage code and projects.
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ReDoc helps developers write, search, review, test, or manage code and projects.
An experimental, largely visual and example-based open source online book about regular expressions. It is intended for regex beginners with some programming experience and covers basics such as character classes, escapes, groups, repetition, alternation, flags, anchors and lookaround. A single-page version is available for printing.
RegexLearn provides developer documentation, references, tutorials, or learning resources.
Supports software work with AI-assisted coding, testing or application development.
Rekt FM is a 24/7 cyberpunk music radio station on the Rekt Network platform. It offers 320kbps audio, live DJs, IRC chats and custom code, with programming spanning dubstep, synthwave, drum and bass, EDM, lo-fi and jazz.
Remote OK is a remote job platform listing remote jobs in fields such as programming, design, sales and customer support. Employers post jobs that are distributed through a network of job boards using its API. The site also offers a Remote Jobs API and a JSON feed.
Repomix supports software development with code generation, analysis, debugging, or documentation.
A Codeberg repository for requesting project resources such as CI access, more repositories and storage. It hosts request templates and notes default limits set to prevent abuse. Hosted CI/CD runs in containers on GNU/Linux platforms, Forgejo Actions default runners need no permission, and Woodpecker CI access is granted per account via a request form.
Resend is an email platform for developers. It provides an interface for sending transactional and marketing emails, with SDKs for programming languages. Features include modular webhooks for delivery, open, bounce and click notifications, a test mode, contact management, broadcast analytics, and email development using React.
Responsivize is an open-source, cross-platform desktop app for developing responsive websites. It lets users test web apps on popular devices or custom dimensions and includes device frames, browser menubars and search bars. The app works on Windows, MacOS and Linux and is free to use.
ReversingBits helps developers write, search, review, test, or manage code and projects.
ReviewCerberus is an AI-powered code review tool that analyzes git branch differences and generates review reports. It examines logic, security, performance and code quality, and supports AWS Bedrock and Anthropic API, according to the repository. A GitHub Action posts review comments on pull requests.
Rhasspy is an open source, fully offline set of voice assistant services for many human languages. It works with Hermes protocol compatible services, Home Assistant, Hass.io, Node-RED, Jeedom and OpenHAB. Voice commands are specified in a template language and produce JSON events that can trigger actions in home automation software. A web interface allows configuration, programming and testing, with functionality exposed through an HTTP API.
An AI-powered autonomous coding agent integrated directly into VS Code. opensource.
ROP Emporium teaches return-oriented programming through a series of challenges, starting with ret2win and progressing through topics such as split, callme, write4, badchars, fluff, pivot and ret2csu. A beginners' guide is available.
Rosebud AI is a game maker for creating playable games from AI prompts. Users describe an idea or choose a template, then build and deploy the game, with no coding required. The pricing page says a free start is followed by upgrades for more credits, private projects, commercial rights, code download and Windows export.
Rosetta Code is a programming chrestomathy site that presents solutions to the same task in as many different languages as possible. It aims to show how languages are similar and different and to help a person grounded in one approach learn another. The site currently lists 1,360 tasks, 421 draft tasks, and 1,009 languages.
Zero-configuration MCP server that unifies multiple AI coding assistants (Claude Code, Cursor, Codex) through intelligent auto-discovery.
RSSTango is a directory of categorized RSS feed links, covering topics including general news, cybersecurity, Linux distributions, filesharing, programming, technology, and podcasts. Some listed links are marked with content warnings, and the directory supports exporting feed lists in raw text, PDF, PNG, WebP, and JPG formats.
SAMOA was an Apache Incubator podling that provided a collection of distributed streaming algorithms for data mining and machine learning tasks such as classification, clustering and regression, plus programming abstractions for developing new algorithms on distributed stream processing engines. Its pluggable architecture allowed it to run on several engines. The podling retired on 2021-03-11.
Sandman helps developers write, search, review, test, or manage code and projects.
CodeFormer, developed by sczhou, is a robust open-source face restoration algorithm designed for restoring old photos and AI-generated faces. The associated web demo is intended for research purposes. It is available via the Replicate platform or for local deployment, runs on Nvidia L40S GPUs, and typically completes predictions in 3 seconds. The associated research was published at NeurIPS 2022.
Supports software work with AI-assisted coding, testing or application development.