head to head · open source
CocoIndex vs API
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. API has 2,503 stars, 622 forks, 15 open issues and last shipped 7 months ago. CocoIndex leads on adoption by 362% (11,566 vs 2,503 stars). CocoIndex is written in Rust under Apache-2.0; API is written in JavaScript under GPL-3.0. CocoIndex has attracted 8% as many forks as stars, API 25%. CocoIndex was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | API | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 2.5K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Rust | JavaScript |
| Last push | 2026-09-16 | 2026-02-14 |
| Forks | ⑂ 899 | ⑂ 622 |
| 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 API if
- You want the API feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and API 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 API
API is an open source JavaScript service for disease statistics under GPL 3.0. It lives in the JavaScript data API ecosystem and publishes information about COVID 19, Influenza, and related disease tracking topics. The project gives users one API for global case overviews, city or region mobility data, and official government data for some countries.
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Frequently asked questions
Is CocoIndex or API more popular?
CocoIndex has 11,566 GitHub stars and API has 2,503. CocoIndex has the larger community by that measure.
Are CocoIndex and API free?
Both are open source. CocoIndex is licensed under Apache-2.0 and API under GPL-3.0. Neither carries a licence fee.
What is the difference between CocoIndex and API?
CocoIndex is written in Rust and API in JavaScript. 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 API?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose API if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.