head to head · open source
Jellyfin vs JJazzLab
Jellyfin has 58,942 GitHub stars, 5,757 forks, 684 open issues and last shipped 2 days ago. JJazzLab has 608 stars, 49 forks, 26 open issues and last shipped yesterday. Jellyfin leads on adoption by 9,594% (58,942 vs 608 stars). Jellyfin is written in C# under GPL-2.0; JJazzLab is written in Java under LGPL-2.1. Jellyfin has attracted 10% as many forks as stars, JJazzLab 8%. JJazzLab 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
| Jellyfin | JJazzLab | |
|---|---|---|
| GitHub stars | ★ 59K | ★ 608 |
| License | GPL-2.0 | LGPL-2.1 |
| Written in | C# | Java |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 5.8K | ⑂ 49 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Jellyfin if
- You weight community size — 59K stars and counting
- You want the GPL-2.0 license terms
- Your stack matches C#
- You value the larger contributor base for long-term maintenance
pick JJazzLab if
- You want the JJazzLab feature set and don't need the biggest community
- You prefer the LGPL-2.1 license terms
- Your stack matches Java
- You evaluated both and JJazzLab fits your workflow better
About Jellyfin
Jellyfin The Free Software Media System Jellyfin is a Free Software Media System that puts you in control of managing and streaming your media. It is an alternative to the proprietary Emby and Plex, to provide media from a dedicated server to end user devices via multiple apps. Jellyfin is descended from Emby's 3.5.2 release and ported to the .NET platform to enable full cross platform support. There are no strings attached, no premium licenses or features, and no hidden agendas: just a team that wants to build something better and work together to achieve it. We welcome anyone who is interested in joining us in…
read the full Jellyfin overview →
About JJazzLab
JJazzLab JJazzLab is a complete and open application dedicated to backing tracks generation. You type in chord symbols, select a rhythm (music style), then the application generates a complete backing track with drums, bass, guitar, piano, strings, etc. The objective is to generate interesting backing tracks , i.e tracks which are: realistic non boring (with variations and dynamics) easily customizable, even for complex songs The JJazzLab UI (available in several languages thanks to the JJazzLab community): JJazzLab embeds its own customized software synth based on FluidSynth. For even better sounds, just…
read the full JJazzLab overview →
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Frequently asked questions
Is Jellyfin or JJazzLab more popular?
Jellyfin has 58,942 GitHub stars and JJazzLab has 608. Jellyfin has the larger community by that measure.
Are Jellyfin and JJazzLab free?
Both are open source. Jellyfin is licensed under GPL-2.0 and JJazzLab under LGPL-2.1. Neither carries a licence fee.
What is the difference between Jellyfin and JJazzLab?
Jellyfin is written in C# and JJazzLab in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Jellyfin or JJazzLab?
Choose Jellyfin if you want the larger community (58,942 stars) or its GPL-2.0 licence terms. Choose JJazzLab if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.