Sist2 vs Sonic
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Sist2
Lightning-fast tag-based file indexing and search engine
VS
Sonic
Fast, lightweight schema-less search backend
| Feature | Sist2 | Sonic |
|---|---|---|
| Category | Search Engines | Search Engines |
| License | GPL-3.0 | MPL-2.0 |
| Language | C | Rust |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 32 MB |
| Deployment | docker, binary | docker, binary |
| GitHub stars | ★ 1,279 | ★ 21,299 |
| First released | 2019 | 2019 |
| Replaces | Recoll | Algolia, Elasticsearch |
Why pick each one
Choose Sist2 if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Active community (1.3k GitHub stars)
- Written in C
Frequently asked questions
Is Sist2 or Sonic better?
Neither is universally better. Sonic has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Sist2 and Sonic free and open-source?
Yes. Sist2 is licensed under GPL-3.0 and Sonic under MPL-2.0. Both can be self-hosted at no software cost.
Can I run Sist2 and Sonic with Docker?
Sist2: yes. Sonic: yes.