head to head · open source
Invidious vs JJazzLab
Invidious has 24,481 GitHub stars, 2,750 forks, 480 open issues and last shipped 3 days ago. JJazzLab has 590 stars, 48 forks, 26 open issues and last shipped 8 days ago. Invidious leads on adoption by 4,049% (24,481 vs 590 stars). Invidious is written in Crystal under AGPL-3.0; JJazzLab is written in Java under LGPL-2.1. Invidious has attracted 11% as many forks as stars, JJazzLab 8%. Invidious 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
| Invidious | JJazzLab | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 590 |
| License | AGPL-3.0 | LGPL-2.1 |
| Written in | Crystal | Java |
| Last push | 2026-09-16 | 2026-09-11 |
| Forks | ⑂ 2.8K | ⑂ 48 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Invidious if
- You weight community size — 24K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Crystal
- 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 Invidious
Invidious is an open source, AGPL 3.0 alternative front end to YouTube, written in Crystal, aimed at people who want to watch videos without ads, tracking, or a Google account.
read the full Invidious overview →
About JJazzLab
JJazzLab is a free, open source, cross platform desktop application for automatic backing track generation — you enter chord symbols, pick a music style, and it produces a full arrangement with drums, bass, guitar, piano and strings — built for musicians who want a band to practise with, teachers, and composers working at an early stage.
read the full JJazzLab overview →
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Frequently asked questions
Is Invidious or JJazzLab more popular?
Invidious has 24,481 GitHub stars and JJazzLab has 590. Invidious has the larger community by that measure.
Are Invidious and JJazzLab free?
Both are open source. Invidious is licensed under AGPL-3.0 and JJazzLab under LGPL-2.1. Neither carries a licence fee.
What is the difference between Invidious and JJazzLab?
Invidious is written in Crystal 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, Invidious or JJazzLab?
Choose Invidious if you want the larger community (24,481 stars) or its AGPL-3.0 licence terms. Choose JJazzLab if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.