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CopilotKit logo
CopilotKit
✓ verifiedFreemium

Open-source React/Angular SDK and platform for embedding agentic, generative-UI copilots into apps, Slack and Teams.

170K visits/mo
DeepWiki logo
DeepWiki
✓ verifiedFree

Free tool that auto-generates conversational, browsable documentation for any public GitHub repo, from the makers of Devin.

1.2M visits/mo
Arena logo
Arena
✓ verifiedFreemium

Engagement suite adding live chat, comments, polls and live blogs to publisher and brand sites to grow and monetize audiences.

145K visits/mo
ChatPDF logo
ChatPDF
✓ verifiedFreemium

Popular tool to chat with PDFs and other documents, giving summaries and cited answers, with a free daily tier and no-signup start.

1.8M visits/mo43K saves
Tangia logo
Tangia
✓ verifiedFreemium

Interactive livestreaming toolkit adding custom AI text-to-speech, chat interactions, and alerts for streamers.

143K visits/mo1.6K saves
Pricing
Developer: $0 (1 seat, free forever, 200 threads)
Pro: $39/developer/mo (up to 5 seats, 5,000 threads)
Team: $500/mo (5 seats, 25,000 threads)

No public pricing

Free: $0/mo
Starter: $49/mo
Professional: $249/mo
Business: $999/mo

Free trial available

No public pricing

No public pricing

Core features
  • React and Angular frontend SDKs
  • Agent-rendered generative UI
  • AG-UI agent-user interaction protocol
  • Connectors for LangChain and other frameworks
  • Pre-built customizable chat/sidebar components
  • Slack and Teams integrations
  • Thread and state persistence
  • AI-generated documentation for GitHub repos
  • Conversational Q&A about a codebase
  • Browsable index of popular repositories
  • Deep code indexing via Devin
  • Threaded comments
  • Real-time group chat
  • Live blog streams
  • AI polls and moderation
  • First-party data capture
  • No-code website embed
  • Chat with PDFs, Word, PowerPoint and text files
  • Summaries with cited sources
  • Multi-file chats via folders
  • Any-language upload and chat
  • Extra tools: AI writer, detector, flashcards, slides
  • No-signup quick start
  • 150+ text-to-speech voices plus custom voice cloning
  • AI chat with scripted or custom personas viewers can talk to
  • Chat-triggered meme and image-generation interactions
  • Custom stream alerts tied to any Tangia feature
  • Media-sharing overlay with trimming support
  • Twitch clip-to-soundbite conversion
Use cases
  • Adding an AI assistant to a SaaS product
  • Building agents that render interactive UI
  • Deploying copilots across Slack and Teams
  • Connecting existing agents to a frontend
  • Understanding an unfamiliar codebase quickly
  • Onboarding to open-source projects
  • Answering questions about repo internals
  • Live event coverage
  • Growing on-site community
  • Monetizing audience with ads
  • Capturing first-party data
  • Understand research papers
  • Study and homework help
  • Review contracts and reports
  • Translate and summarize documents
  • Letting chat trigger TTS shoutouts or reactions during a stream
  • Running AI-persona banter segments with viewers
  • Rewarding Bit/Token goals with in-stream dance parties
  • Sharing trimmed video clips or memes live on stream
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