2,445 tools
Free to startCoding & development
Refine is an AI-led platform for building enterprise internal tools and B2B apps on React. It connects to REST APIs or Supabase, analyzes your backend to blueprint agent work, and lets teams preview, edit, and export or publish production-grade admin panels from a web IDE.
Free planCoding & development
Refraction is an AI developer assistant for refactoring, explaining, documenting, testing, and generating code across many languages and frameworks. Users paste code, pick an action such as unit test generation or bug detection, and receive transformed output via the web app and editor extensions.
Coding & development
Reges Code provides a local AI code editor with model routing and agent teams.
Free tier unknownCoding & development
Regex.ai is an AI-powered regular expression generator and solver from Liberty Labs. Paste sample text, highlight strings to match, and compare multiple agent-generated regex patterns with live match previews for emails and similar extraction tasks.
Free planCoding & development
RegexAI is a free browser tool for testing regular expressions with live matching and generating patterns from plain-English descriptions. Users can describe what to match—such as emails, phone numbers, or URLs—or paste an existing regex to validate matches without creating an account.
Free planAI models & APIs
Relace provides purpose-built AI models and token-based infrastructure for coding agents, including relace-search, relace-compact, relace-apply, and relace-rank models. Pricing is consumption-based per million input and output tokens with a free tier to test models in the playground.
AI agents & automation
RelayDesk connects AI assistants to files, commands and processes on paired computers and servers.
Free planCoding & development
Release AI by PerfAI tracks API changes and generates release notes and changelog documentation.
Free trialCoding & development
Relvy AI automates on-call runbooks by investigating production alerts with an AI agent purpose-built for telemetry. The platform offers investigation notebooks, integrations, runbook execution, and SOC 2 Type II hosted cloud or self-hosted deployment to reduce MTTR for engineering teams.
Free planCoding & development
Remyx AI provides decision intelligence for teams running AI in production, recommending what to ship next and validating changes with experiment evidence. The platform combines Outrider research automation, CLI tools, and an ExperimentOps pilot for production AI workflows.
Free planCoding & development
Render is a cloud application platform for deploying web services, static sites, databases, cron jobs, and AI workloads with managed TLS and observability. The homepage emphasizes developer-friendly deploys while pricing tables mix workspace plans with metered compute instance types.
Free planCoding & development
Rendi provides FFmpeg as a cloud API so developers run video processing commands online without installing FFmpeg locally. The platform scales vCPU, storage, and runtime limits across Free exploration tiers and paid Pro capacity bundles.
Free trialCoding & development
Replicas runs coding agents such as Claude Code, Codex, Cursor, and Opencode inside cloud Linux workspaces with your repositories and dependencies. Teams delegate work from Slack, Linear, GitHub, or a dashboard, then review pull requests, replies, and session recordings from anywhere.
Free planCoding & development
Replit is a cloud IDE and AI app builder where users describe apps in natural language, edit code, and deploy with integrated agents, databases, and hosting. Plans add parallel agents, higher AI credit bundles, collaborators, and enterprise security controls.
Free planCoding & development
RepoFlow is a package management platform for hosting private and public artifacts in the cloud or on self-managed infrastructure. The site highlights storage and bandwidth limits, AI-assisted workflows, and team workspaces for DevOps package publishing.
Free planCoding & development
Repomix packs entire local or remote codebases into AI-friendly XML, Markdown, JSON, or plain text files for LLM workflows. The open tool respects .gitignore, optionally compresses code with Tree-sitter, detects secrets, and reports token counts for context planning.
Free tier unknownCoding & development
Repo Prompt is a native macOS context engineering app for building rich code prompts and iterating with powerful AI models. It also exposes an MCP interface so external AI agents can use the same context tooling from their workflows.
Free planCoding & development
Reqi is requirements management software for regulated engineering projects, emphasizing traceability, compliance evidence, and supply-chain collaboration. Pricing offers a free Single Project workspace and paid multi-project tiers with higher requirement limits and storage.
Free tier unknownAI agents & automation
Resleeve is an agent-driven workspace that builds apps, runs marketing, sales, and customer support from one place. The vendor positions it for founders who want AI agents to ship software and grow the business together.
Free planCoding & development
Flockbay (formerly reachable via Respaced.com redirects) is a free AI game maker built on Godot. Users let Claude, ChatGPT, or other agents build inside a hosted Godot 4 editor and export real PC games.
Free planAI models & APIs
Respan is an AI router and observability platform for tracing, evaluating, and improving agent runs.
Free planCoding & development
Respresso’s image converter is a browser tool that turns uploaded SVG, PDF, PNG, or WebP assets into Android, iOS, Web, React Native, or SCSS outputs. It complements the broader Respresso platform for multi-platform asset and localization sync at build time.
Free planCoding & development
Respresso’s localization converter transforms XML, strings, or JSON localization files into Android strings.xml, iOS .strings, and Web JSON bundles. It helps teams preview platform-specific localization outputs before adopting full Respresso project automation.
Free planCoding & development
REST Countries (restcountries.com) is a country data API returning 90+ fields for 250+ countries, including ISO codes, capitals, currencies, languages, borders, flags and time zones. Version 5 needs a free or paid API key; the older keyless v1–v4 endpoints have been retired.
Showing 2,040 of 2,445 tools
Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.