head to head · open source
CocoIndex vs Elementary Data
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. Elementary Data has 2,410 stars, 226 forks, 12 open issues and last shipped yesterday. CocoIndex leads on adoption by 380% (11,566 vs 2,410 stars). CocoIndex is written in Rust under Apache-2.0; Elementary Data is written in HTML under Apache-2.0. CocoIndex has attracted 8% as many forks as stars, Elementary Data 9%. Elementary Data 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 | Elementary Data | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 2.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | HTML |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 899 | ⑂ 226 |
| 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 Elementary Data if
- You want the Elementary Data feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches HTML
- You evaluated both and Elementary Data 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 Elementary Data
Elementary Data is an open source, dbt native data observability tool for data and analytics engineers. It lives in the dbt and modern data warehouse ecosystem, and it is distributed as a CLI that works alongside the Elementary dbt package. The project is licensed under Apache 2.0, is written primarily in HTML, and is maintained by the Elementary team with a homepage at elementary data.com and documentation at docs.elementary data.com.
read the full Elementary Data overview →
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Frequently asked questions
Is CocoIndex or Elementary Data more popular?
CocoIndex has 11,566 GitHub stars and Elementary Data has 2,410. CocoIndex has the larger community by that measure.
Are CocoIndex and Elementary Data free?
Both are open source. CocoIndex is licensed under Apache-2.0 and Elementary Data under Apache-2.0. Neither carries a licence fee.
What is the difference between CocoIndex and Elementary Data?
CocoIndex is written in Rust and Elementary Data in HTML. 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 Elementary Data?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose Elementary Data if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.