RegexAI is a free online tool for testing regular expressions with live matching. It also builds new patterns from plain-English descriptions of what the user wants to match, according to the site. No signup is required.
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Supports software work with AI-assisted coding, testing or application development.
Replay QA is an autonomous testing harness for web applications. Agents explore an app, write and run tests in a Chromium browser, and record deterministic runtime sessions. It reports bugs such as runtime bugs, UI glitches, accessibility issues, performance problems and security vulnerabilities, with a root cause and suggested fix. Reports go to GitHub, Linear, Jira or other HTTP endpoints.
manage is related to CAPTCHA testing, solving, demos, or browser tools for verification pages.
Respeecher provides an AI voice generator for professional production workflows. It offers enterprise-grade voice cloning and synthetic speech services, including a real-time text-to-speech API for voice agents. Its Voice Marketplace supplies over 40 AI voices and a plugin for Pro Tools. The company serves entertainment, film, TV, animation, games, broadcasting, sports, podcasts, audiobooks, music, and advertising sectors. Free testing and flexible integration are available.
A simple web page for testing APIs. Users specify an HTTP method, URL and parameters and click to send an Ajax request. The page requires a browser with HTML5 support.
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.
Rhythm is an Android music player featuring Material You design. It uses Media3 ExoPlayer and includes a 10-band equalizer, synchronized lyrics, library management, and device switching. A Dual-Mode Architecture supports local and streaming playback. It is available on Google Play for open testing.
The ROCEEH Out of Africa Database (ROAD) is a research database offering simple search functionality, with supporting documentation including table descriptions, an entity relationship diagram, a manual and FAQs. Full access requires user registration, and the service will be temporarily unavailable on September 28, 2026 from 4:00 PM to approximately 4:30 PM German time for emergency procedure testing.
Rufus is a lightweight Windows system utility that creates bootable USB drives. These drives can be used to install or run Microsoft Windows, Linux, or DOS on a computer. The tool is designed for speed and simplicity, requiring only a small number of clicks and a few minutes of time to generate a functional bootable drive for operating system deployment, testing, or recovery use cases.
s-tui is an open source terminal-based system utility hosted on GitHub, developed by amanusk. It serves as both a CPU stress testing tool and a system monitoring utility designed for use in command line environments.
Sandboxie-Plus is open source sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. It creates an isolated operating environment in which applications can be run or installed without permanently modifying the local or mapped drive, allowing controlled testing of untrusted programs and web surfing. Development has continued under David Xanatos since the project became open source. Two builds exist: Classic with an MFC-based UI and Plus with a Qt-based UI.
Screaming Frog SEO Spider is a website crawler for Windows, macOS and Ubuntu used for technical SEO site audits. It audits sites for over 300 SEO issues and can find broken links, audit redirects, analyse page titles and meta data, and generate XML sitemaps. A free version is available.
Screpy helps audit websites, improve search visibility, and monitor SEO or analytics performance.
Scribble is a developer security tool for smart contracts, testing, monitoring, or audits.
SearchPOF.com is an online tool that helps users work with usernames, digital identities, or related information for research and testing.
Selenium is an umbrella project of tools and libraries for automating web browsers. It provides extensions to emulate user interaction and infrastructure for W3C WebDriver implementations, letting developers write interchangeable code for major browsers. It is primarily used for automating web applications for testing.
Supports software work with AI-assisted coding, testing or application development.
SEO Gets is a Google Search Console and GA4 analytics tool for SEO professionals. It offers a master dashboard consolidating search console websites, content groups, striking distance, cannibalization and content decay analysis, index reporting and monitoring, and an MCP server for plugging SEO data into AI assistants. Magic share links share dashboards without requiring account creation.
SEO Toolbox helps audit websites, improve search visibility, and monitor SEO or analytics performance.
SEO Utils is an SEO desktop application for macOS, Windows and Linux. It covers traditional SEO, local SEO and AI search optimization, with tools for tracking rankings across Google, Bing, ChatGPT, AI Overviews and AI Mode, LLM rank tracking, log file analysis, an MCP server, NLP text analysis and an embedding database.
seo-audit-skill crawls websites to audit SEO, accessibility, performance, and technical page issues.
seo-os helps monitor local SEO visibility, map rankings, business listings, and local search performance.
Seo-Promt-Master crawls websites to audit SEO, accessibility, performance, and technical page issues.