15,347 tools
Compare plans, free tiers and API access across thousands of AI tools — every fact carries its source and check date.
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Free to startImages
ImageByQwen hosts Qwen Image 2, a web AI photo generator and editor powered by Qwen models. You create or edit images from text, buy credit-based monthly or yearly plans, and can access basic or advanced API tiers on higher packages.
Free planImages
Qwen-Image-2512 AI is a web portal for Alibaba's Qwen-Image-2512 model, offering free online image generation with photorealistic portraits, Chinese text rendering, and layer decomposition. The site also documents a production API and subscription credit packs for heavier use.
Free planCode
The R Project distributes the free R software environment for statistical computing and graphics.
Free tier unknownAssistant
R.test is an AI-powered diagnostic platform for Digital SAT, ACT, and related exams. Short adaptive mini-tests estimate scores in about 40 minutes, surface strengths and weaknesses, and ship analytics reports for students and educators.
Free to startResearch
R2 Copilot is a private AI assistant that routes GPT, Claude, Gemini, and other models through Microsoft 365, Google Workspace, browser, and Telegram add-ins. Prompts are encrypted with patented SDNP before they reach model providers, with governance controls for enterprise teams.
Free planAssistant
Ask Rabbi Ari on Hebrew Bible Study is a free web chat billed as an AI rabbi trained on Torah, Talmud, and Jewish law. Users ask halakha, ethics, holiday, and daily-practice questions with answers grounded in classical sources.
Free tier unknownVideo
Rabbit Reader is an AI reading assistant browser extension experience. Select complex text on a page to get in-context explanations with sources, aimed at researchers, students, and professionals reading dense material such as arXiv papers.
Free tier unknownImages
Rabbithole is a curiosity chat app that launches exploratory threads on history, science, and culture. Signed-in users keep conversation history, revisit past rabbitholes, and continue discussions from suggested starter questions.
Free trialResearch
Slashspace, formerly Rabbitholes AI, is a desktop AI canvas for branching research chats. It supports PDFs, video, and web sources, orchestrator mode that builds node graphs, and BYOK or subscription models with yearly or lifetime licenses.
Free planDeveloper Tools
RabbitMQ is an open source message broker that implements AMQP and related messaging patterns for distributed applications. The official site provides documentation, downloads, tutorials, and links to commercial support from Broadcom while describing queue-focused reliability features.
Free planAssistant
Raccoon AI is a collaborative general-purpose agent for building web apps, slides, dashboards, research briefs, and other end-to-end workflows. It connects workspace tools, runs concurrent tasks on paid tiers, and offers a free starter tier with production deploys.
Free planMedia Automation
Radarr is an open-source movie collection manager that automates monitoring, searching, and downloading releases with customizable quality profiles, calendars, and failed-download handling.
Free trialImages
Radiant Imaging Labs sells Radiant Photo desktop and mobile imaging software with local, non-destructive AI-assisted corrections. The homepage emphasizes one-click smart fixes, no cloud upload, and no generative AI replacements for your pixels.
Free trialVoice
Radio Starlight is a generative radio and podcast studio. You design segment-by-segment shows bound to feeds, APIs, pages, weather, or music, steer voices and sound sets with prompts, and publish catalogs via the open Starlight protocol.
Free planCode
Radius is a free macOS browser built for AI coding agents. It runs Claude Code, Codex, and Cursor in parallel across worktrees with agents, terminals, and diffs organized in tabs inside one window.
Free planCode
Radmin VPN is free Windows software for creating virtual private networks between remote computers. It connects PCs behind firewalls into one secure local-style network, integrates with Radmin remote control, and encrypts traffic with 256-bit AES.
Free planResearch
Raena AI turns uploaded class materials into guided study experiences. One upload can become lessons, quizzes, flashcards, podcasts, and game-like review, with paths that adapt to your level and exam dates.
Free tier unknownAssistant
NVIDIA’s Build a RAG Pipeline blueprint is a modular reference architecture for GPU-accelerated retrieval-augmented generation across enterprise search, copilots, and agent workflows. It covers multimodal ingestion, NeMo Retriever, reasoning controls, OpenAI-compatible APIs, and MCP server support.
Free planAssistant
Ragas is an open-source framework for evaluating and monitoring LLM applications. It provides automatic metrics, synthetic evaluation data generation, and workflows to test quality during development and in production.
Free tier unknownAssistant
Raguie markets an AI financial assistant with real-time stock data, personalized investment ideas, and sustainable investing options.
Free tier unknownCode
Rails Blocks sells copy-paste Ruby on Rails UI components built with Tailwind CSS and Stimulus, plus a CLI and MCP server for AI-assisted installs. The Pro page offers lifetime licenses for individuals and teams to unlock the full component library.
Free tier unknownCode
Rails Guard from Hoop adds live AI data masking, passwordless Google SSO, and session recording to Rails console access. Teams install it with a one-line codebase change to replace static keys with audited, compliant console workflows.
Free trialCloud
Railway is an all-in-one cloud for deploying web apps, APIs, databases, and background workers with automatic scaling and observability. The homepage and pricing page combine subscription plans with metered compute, memory, storage, and egress charges billed per second.
Free planAssistant
Raindrop is production observability for AI agents. It traces runs, detects silent failures, triages issues in Slack or MCP, and supports simulations and experiments so teams can fix agent regressions before shipping.
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