head to head · open source
Seal-Report vs OpenContracts
Seal-Report has 1,642 GitHub stars, 508 forks, 21 open issues and last shipped 2 days ago. OpenContracts has 1,534 stars, 199 forks, 11 open issues and last shipped 3 days ago. Seal-Report leads on adoption by 7% (1,642 vs 1,534 stars). Seal-Report is written in C# under MIT; OpenContracts is written in Python under MIT. Seal-Report has attracted 31% as many forks as stars, OpenContracts 13%. 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
| Seal-Report | OpenContracts | |
|---|---|---|
| GitHub stars | ★ 1.6K | ★ 1.5K |
| License | MIT | MIT |
| Written in | C# | Python |
| Last push | 2026-11-03 | 2026-11-02 |
| Forks | ⑂ 508 | ⑂ 199 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Seal-Report if
- You weight community size — 1.6K stars and counting
- You want the MIT license terms
- Your stack matches C#
- You value the larger contributor base for long-term maintenance
pick OpenContracts if
- You want the OpenContracts feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and OpenContracts fits your workflow better
About Seal-Report
Seal Report & Task Seal Report & Task is a complete open source framework for producing reports from any database or NoSQL source, and for performing complex tasks (ETL, batch). Entirely written in C for Microsoft .NET, and free for everyone under the MIT License . The product focuses on easy installation and report design : once set up, reports can be built and published in a minute. Web site & quick start guides : sealreport.org Live demo of the Web Report Server: sealreport.org/demo Free support & community : GitHub Discussions Main Features Dynamic SQL sources : Use your own SQL, or let the Seal engine build…
read the full Seal-Report overview →
About OpenContracts
OpenContracts (Demo) Open source document intelligence you can build on. Point OpenContracts at a repository of documents and get a programmable citation graph — human annotation, structured extraction, AI agents, and a built in MCP server, all behind one API. Self hosted, MIT licensed, and built for teams working at scale. Same graph, three surfaces: a GraphQL + REST API for your apps, a Model Context Protocol server for your agents, and a React UI for your team. From documents to a citation graph — in about a minute Create a corpus, drop in your documents, and click Set up . That one click installs the…
read the full OpenContracts overview →
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Frequently asked questions
Is Seal-Report or OpenContracts more popular?
Seal-Report has 1,642 GitHub stars and OpenContracts has 1,534. Seal-Report has the larger community by that measure.
Are Seal-Report and OpenContracts free?
Both are open source. Seal-Report is licensed under MIT and OpenContracts under MIT. Neither carries a licence fee.
What is the difference between Seal-Report and OpenContracts?
Seal-Report is written in C# and OpenContracts 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, Seal-Report or OpenContracts?
Choose Seal-Report if you want the larger community (1,642 stars) or its MIT licence terms. Choose OpenContracts if its feature set, stack or MIT licence fits better. Both are self-hostable.