head to head · open source
realtime vs Seal-Report
realtime has 7,635 GitHub stars, 468 forks, 78 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. realtime leads on adoption by 367% (7,635 vs 1,635 stars). realtime is written in Elixir under Apache-2.0; Seal-Report is written in C# under MIT. realtime has attracted 6% as many forks as stars, Seal-Report 31%. realtime was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| realtime | Seal-Report | |
|---|---|---|
| GitHub stars | ★ 7.6K | ★ 1.6K |
| License | Apache-2.0 | MIT |
| Written in | Elixir | C# |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 468 | ⑂ 508 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick realtime if
- You weight community size — 7.6K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Elixir
- 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 realtime
Supabase Realtime is a server built with Elixir on the Phoenix Framework that pushes three kinds of realtime functionality to browser and server clients over WebSockets. It lives in the Supabase ecosystem, where it acts as the realtime layer alongside Postgres, and it is distributed as open source under the Apache 2.0 license. The project has been public for roughly seven years, carries 7,632 stars and 463 forks, and its topic list places it in the company of change data capture, CRDT, distributed systems, pubsub, and PostgreSQL tooling.
read the full realtime 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 realtime or Seal-Report more popular?
realtime has 7,635 GitHub stars and Seal-Report has 1,635. realtime has the larger community by that measure.
Are realtime and Seal-Report free?
Both are open source. realtime is licensed under Apache-2.0 and Seal-Report under MIT. Neither carries a licence fee.
What is the difference between realtime and Seal-Report?
realtime is written in Elixir 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, realtime or Seal-Report?
Choose realtime if you want the larger community (7,635 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.