Open Source AI assistant for your knowledge

ContextChat is a powerful AI interface that automatically injects your project context, files, and reusable prompts into conversations. All data stays local on your machine.

Also available for Android, iOS, Linux, and Windows

ContextChat logo

Features

ContextChat streams your context directly into AI conversations. Local storage, open source, works everywhere.

Project context
File knowledge
URL import
Local storage
OpenRouter
Prompt library

Project context

Set base system prompts for each project

  • ✓Reusable instructions
  • ✓Per-project settings
  • ✓Persistent context

File knowledge

Import text files directly into AI context

  • ✓PDF, code, docs
  • ✓Local storage
  • ✓Context assembly

URL import

Paste any URL to import content for AI context

  • ✓Web page content
  • ✓Documentation
  • ✓Instant context

Local storage

All project data stays on your machine

  • ✓Privacy first
  • ✓JSON plain files
  • ✓Easy backup/sync

OpenRouter

Access any model from OpenAI, Anthropic, Google

  • ✓Model flexibility
  • ✓Real-time streaming
  • ✓Pay as you go

Prompt library

Build a library of frequently used prompts

  • ✓Save and reuse
  • ✓Markdown support
  • ✓Code block rendering

Comparisons

Other AI Chat Tools

  • Cloud-based with subscription fees
  • No local storage option
  • Limited context per project
  • Vendor lock-in to one model provider
  • Cannot work offline
  • Closed source

With

  • All data stays local on your machine
  • Open source under AGPL-3.0
  • Works offline after initial setup
  • OpenRouter integration - any model
  • Reusable prompts and project context
  • Built with Flutter - multi-platform

Frequently Asked Questions

Find answers to common questions about ContextChat.

Also available for Android, iOS, Linux, and Windows