head to head · open source
Lightdash vs Seal-Report
Lightdash has 6,221 GitHub stars, 802 forks, 1,018 open issues and last shipped 2 days ago. Seal-Report has 1,642 stars, 508 forks, 21 open issues and last shipped 2 days ago. Lightdash leads on adoption by 279% (6,221 vs 1,642 stars). Lightdash is written in TypeScript under a custom or non-standard licence; Seal-Report is written in C# under MIT. Lightdash has attracted 13% as many forks as stars, Seal-Report 31%. Lightdash was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (business-intelligence), 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
| Lightdash | Seal-Report | |
|---|---|---|
| GitHub stars | ★ 6.2K | ★ 1.6K |
| License | Custom / other | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 802 | ⑂ 508 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Lightdash if
- You weight community size — 6.2K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- 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 Lightdash
Open source Agentic BI for modern data teams Build governed metrics, dashboards, AI agents, and data apps from your context layer. Ship analytics through Git, CI, MCP, and the Lightdash CLI. Why Lightdash Lightdash is the Agentic BI platform for teams that want analytics to move like software. Your context layer defines trusted metrics, joins, permissions, business logic, and caching once, then powers every way people consume data: dashboards, AI agents, data apps, embedded analytics, SDKs, and MCP. Data teams can build and maintain analytics with any AI agent, then use the terminal, pull requests, and CI to…
read the full Lightdash overview →
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 →
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Frequently asked questions
Is Lightdash or Seal-Report more popular?
Lightdash has 6,221 GitHub stars and Seal-Report has 1,642. Lightdash has the larger community by that measure.
Are Lightdash and Seal-Report free?
Both are open source. Lightdash has no licence declared in this registry, and Seal-Report is licensed under MIT. Both are free to self-host.
What is the difference between Lightdash and Seal-Report?
Lightdash is written in TypeScript 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, Lightdash or Seal-Report?
Choose Lightdash if you want the larger community (6,221 stars) or its Custom / other licence terms. Choose Seal-Report if its feature set, stack or MIT licence fits better. Both are self-hostable.