head to head · open source
CocoIndex vs OpenContracts
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. OpenContracts has 1,481 stars, 189 forks, 11 open issues and last shipped yesterday. CocoIndex leads on adoption by 681% (11,566 vs 1,481 stars). CocoIndex is written in Rust under Apache-2.0; OpenContracts is written in Python under MIT. CocoIndex has attracted 8% as many forks as stars, OpenContracts 13%. OpenContracts was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai, ai-agents, etl), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| CocoIndex | OpenContracts | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.5K |
| License | Apache-2.0 | MIT |
| Written in | Rust | Python |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 899 | ⑂ 189 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick CocoIndex if
- You weight community size — 12K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick OpenContracts if
- You want the OpenContracts feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and OpenContracts fits your workflow better
About CocoIndex
CocoIndex is an open source incremental data transformation engine for AI workloads, built in Rust with a Python interface and positioned in the data engineering, ETL, indexing, and AI agent ecosystem. It turns codebases, meeting notes, inboxes, Slack, PDFs, and videos into continuously fresh context for AI agents and LLM applications.
read the full CocoIndex overview →
About OpenContracts
OpenContracts is an MIT licensed, self hosted document intelligence platform that turns a repository of documents into a programmable citation graph, built for builders and hackers who need a document management system for the agentic world as much as a place to store files.
read the full OpenContracts overview →
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Frequently asked questions
Is CocoIndex or OpenContracts more popular?
CocoIndex has 11,566 GitHub stars and OpenContracts has 1,481. CocoIndex has the larger community by that measure.
Are CocoIndex and OpenContracts free?
Both are open source. CocoIndex is licensed under Apache-2.0 and OpenContracts under MIT. Neither carries a licence fee.
What is the difference between CocoIndex and OpenContracts?
CocoIndex is written in Rust and OpenContracts in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, CocoIndex or OpenContracts?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose OpenContracts if its feature set, stack or MIT licence fits better. Both are self-hostable.