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open-legal-products

open-legal-products/mike

Open-source legal AI platform for document review, drafting, and legal research, built on Next.js, Express, and Supabase.

Open-source alternative to:HarveySpellbook

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What is it?

Mike is an open-source legal AI platform for working with contracts and other legal documents. Users can chat with documents and open matters, review files and apply suggested edits, and run reusable assistant and tabular-review workflows.

The project is split into a Next.js frontend, an Express backend, Supabase for authentication and Postgres, and Cloudflare R2-compatible object storage. A Docker Compose stack starts the whole environment locally, including Supabase, RustFS object storage, and local email capture. Language models can come from Anthropic, Gemini, OpenAI, or local models run through Ollama.

For legal research, Mike can verify citations and search US case law through CourtListener. A Microsoft Word task-pane add-in and optional Gmail and Google Calendar connections extend the workflow into everyday tools. The project is licensed under AGPL-3.0.

Key features

  • 01Chat with legal documents and open matters
  • 02Review documents and apply suggested edits
  • 03Run reusable assistant and tabular-review workflows
  • 04Verify citations and research US case law via CourtListener
  • 05Work from Microsoft Word with a task-pane add-in
  • 06Run supported language models locally through Ollama

Use cases

  • Reviewing contracts and flagging suggested changes in bulk
  • Drafting legal documents with an AI assistant inside Word
  • Researching US case law and verifying citations for a matter
  • Self-hosting a legal AI workspace with local models for confidentiality

Topics

#legal-ai#document-review#nextjs#express#supabase#self-hosted#llm#legal-tech

FAQ

What is mike?
Open-source legal AI platform for document review, drafting, and legal research, built on Next.js, Express, and Supabase. Mike is an open-source legal AI platform for working with contracts and other legal documents. Users can chat with documents and open matters, review files and apply suggested edits, and run reusable assistant and tabular-review workflows.
Is mike free to use? What license does it have?
mike is open source under the AGPL-3.0 license. Check the license terms before using it in commercial products.
Is mike still maintained?
Actively maintained. The last commit to mike was on Oct 20, 2026.
What can I use mike for?
Reviewing contracts and flagging suggested changes in bulk Drafting legal documents with an AI assistant inside Word Researching US case law and verifying citations for a matter Self-hosting a legal AI workspace with local models for confidentiality
Where can I get mike?
The source code and installation instructions are on GitHub: https://github.com/open-legal-products/mike

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