head to head · open source
CocoIndex vs redun
CocoIndex has 11,572 GitHub stars, 900 forks, 83 open issues and last shipped yesterday. redun has 601 stars, 52 forks, 34 open issues and last shipped 2 months ago. CocoIndex leads on adoption by 1,825% (11,572 vs 601 stars). CocoIndex is written in Rust under Apache-2.0; redun is written in Python under Apache-2.0. CocoIndex has attracted 8% as many forks as stars, redun 9%. CocoIndex was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (data-engineering, 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 | redun | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 601 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Python |
| Last push | 2026-09-17 | 2026-07-17 |
| Forks | ⑂ 900 | ⑂ 52 |
| 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 redun if
- You want the redun feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and redun 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 redun
yet another redundant workflow engine redun aims to be a more expressive and efficient workflow framework, built on top of the popular Python programming language. It takes the somewhat contrarian view that writing dataflows directly is unnecessarily restrictive, and by doing so we lose abstractions we have come to rely on in most modern high level languages (control flow, composability, recursion, high order functions, etc). redun's key insight is that workflows can be expressed as lazy expressions, which are then evaluated by a scheduler that performs automatic parallelization, caching, and data provenance logg…
read the full redun overview →
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Frequently asked questions
Is CocoIndex or redun more popular?
CocoIndex has 11,572 GitHub stars and redun has 601. CocoIndex has the larger community by that measure.
Are CocoIndex and redun free?
Both are open source. CocoIndex is licensed under Apache-2.0 and redun under Apache-2.0. Neither carries a licence fee.
What is the difference between CocoIndex and redun?
CocoIndex is written in Rust and redun 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 redun?
Choose CocoIndex if you want the larger community (11,572 stars) or its Apache-2.0 licence terms. Choose redun if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.