Prism-Legal-OS
Open-source legal OS for contract drafting, litigation management, and AI review.
Manage contract litigation, draft with Luna AI, and review documents in one workspace.
Prism-Legal-OS is an open-source contract litigation management system designed for legal teams. It combines shared workspaces, document intelligence, and an AI assistant named Luna to handle drafting, review, and research.
What it is
The platform provides 61 legal templates, multi-document tabular reviews, custom review playbooks, and version history. It indexes documents in Qdrant and processes jobs via a PostgreSQL-backed worker and Express API.
Who it's for
It suits legal professionals, law firms, and in-house counsel wanting to host their own contract management infrastructure. It does not suit teams without technical capability to manage Docker containers and API keys.
Key features
Luna AI Assistant
Research, draft, and refine legal documents with embedded AI guidance.
Contract Templates
Start with 61 bundled Word and HTML templates featuring guided fields.
Tabular Document Review
Extract and compare key terms across multiple documents in a review table.
Review Playbooks
Check contracts against team criteria to spot missing clauses and risks.
Up and running in 3 steps
Our honest verdict
What's great
- Includes 61 pre-built Word and HTML legal document templates
- Provides multi-document tabular review for comparing key terms side by side
- Supports custom review playbooks to maintain consistent matter criteria
- Offers a self-hosted architecture with full control over data and files
Where it falls short
- Requires setting up Docker Compose, PostgreSQL, Qdrant, and MinIO
- Depends on paid external APIs like OpenAI and Resend for AI and email
- AI outputs and templates still require qualified legal review before use
Pricing & license
Free under the AGPL-3.0 license, with optional managed hosting available through FuturixAI. The self-hosted route incurs your own infrastructure, OpenAI, and Resend API costs.
Open remote AI-training roles
873 open remote AI-training roles, updated November 15, 2026; most pay $20–$170 an hour. Zekai lists them free; the application goes to the employer’s platform.
Alternatives
These reviewed AI tools do the same job instantly — from our scored directory.
Use it, or have us set it up
FAQ
What external services are required?
You need a Resend API key for sign-in emails and an OpenAI API key for AI features and document search.
Can I deploy this on managed infrastructure?
Yes, FuturixAI offers a managed option where they run and maintain Prism for your team.
