langchain-ai/open-canvas

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

5490 stars · 872 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Open Canvas is an open-source web application for collaborating with LLM agents to write documents and code, inspired by OpenAI's Canvas. It features a built-in reflection agent with shared memory, artifact versioning, and side-by-side markdown/code editing.

Use cases

• collaboratively write documents with an AI agent
• generate and edit code artifacts with an LLM
• chat with an assistant that remembers my style preferences across sessions
• start from an existing document and iterate on it with AI
• use custom quick-action prompts on my current artifact
• view rendered markdown while editing it live
• self-host an open-source alternative to OpenAI Canvas

When to choose

• you want an open-source, self-hostable Canvas-style writing/coding assistant
• you need persistent user memory and reflections across chat sessions
• you want artifact versioning and mixed markdown/code editing in one workspace
• you want to study or extend a LangGraph-based agent application

When to avoid

• you need a fully hosted service with support - the official demo is no longer live or maintained
• you want a simple chatbot without document/artifact editing
• you cannot provide your own LLM API keys (OpenAI, Anthropic, etc.)
• you need a production-ready product rather than a reference application

Facets

application · maturity maintenance

chatbot agent-framework llm-inference rag prompt-engineering chat-interface ui-components artificial-intelligence large-language-models chatbots web-development developer-tools self-hosted langgraph canvas-ux artifact-editing memory-agents nextjs open-source-llm-app ai-agents web-server nodejs typescript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="langchain-ai/open-canvas")