head to head · open source
CocoIndex vs Seal-Report
CocoIndex has 11,566 GitHub stars, 899 forks, 83 open issues and last shipped 2 days ago. Seal-Report has 1,635 stars, 508 forks, 21 open issues and last shipped 2 days ago. CocoIndex leads on adoption by 607% (11,566 vs 1,635 stars). CocoIndex is written in Rust under Apache-2.0; Seal-Report is written in C# under MIT. CocoIndex has attracted 8% as many forks as stars, Seal-Report 31%. Seal-Report was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (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 | Seal-Report | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.6K |
| License | Apache-2.0 | MIT |
| Written in | Rust | C# |
| Last push | 2026-09-16 | 2026-09-16 |
| Forks | ⑂ 899 | ⑂ 508 |
| 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 Seal-Report if
- You want the Seal-Report feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and Seal-Report 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 Seal-Report
Seal Report & Task is open source database reporting and task framework written in C for Microsoft .NET. It lives in Data & Analytics and Data Engineering & Integration. It targets reports from SQL and NoSQL sources, plus ETL and batch tasks. License is MIT.
read the full Seal-Report overview →
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Frequently asked questions
Is CocoIndex or Seal-Report more popular?
CocoIndex has 11,566 GitHub stars and Seal-Report has 1,635. CocoIndex has the larger community by that measure.
Are CocoIndex and Seal-Report free?
Both are open source. CocoIndex is licensed under Apache-2.0 and Seal-Report under MIT. Neither carries a licence fee.
What is the difference between CocoIndex and Seal-Report?
CocoIndex is written in Rust and Seal-Report in C#. 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 Seal-Report?
Choose CocoIndex if you want the larger community (11,566 stars) or its Apache-2.0 licence terms. Choose Seal-Report if its feature set, stack or MIT licence fits better. Both are self-hostable.