head to head · open source
CocoIndex vs olake
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. olake has 1,453 stars, 252 forks, 178 open issues and last shipped yesterday. CocoIndex leads on adoption by 696% (11,566 vs 1,453 stars). CocoIndex is written in Rust under Apache-2.0; olake is written in Go under Apache-2.0. CocoIndex has attracted 8% as many forks as stars, olake 17%. olake was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (change-data-capture), 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 | olake | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Go |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 899 | ⑂ 252 |
| 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 olake if
- You want the olake feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and olake 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 olake
OLake Go is an open source data ingestion engine written in Go and licensed under Apache 2.0. It replicates transactional databases, Apache Kafka, and S3 into Apache Iceberg or plain Parquet, and it provides a web UI and a command line interface for building scalable, real time pipelines. The project sits in the Apache Iceberg and lakehouse ecosystem, where its stated goal is to move data into vendor neutral table formats that can be read by query engines and warehouses.
read the full olake overview →
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Frequently asked questions
Is CocoIndex or olake more popular?
CocoIndex has 11,566 GitHub stars and olake has 1,453. CocoIndex has the larger community by that measure.
Are CocoIndex and olake free?
Both are open source. CocoIndex is licensed under Apache-2.0 and olake under Apache-2.0. Neither carries a licence fee.
What is the difference between CocoIndex and olake?
CocoIndex is written in Rust and olake in Go. 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 olake?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose olake if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.