Sonic vs Stork
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Sonic | Stork |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 96 · Excellent | 18 · At risk |
| Category | Search Engines | Search Engines |
| License | MPL-2.0 | Apache-2.0 |
| Language | Rust | Rust |
| Setup difficulty | Medium | Easy |
| Min. RAM | 32 MB | 64 MB |
| Deployment | docker, binary | binary, source |
| GitHub stars | ★ 21,349 | ★ 2,760 |
| First released | 2019 | 2019 |
| Replaces | Algolia, Elasticsearch | Algolia |
What are Sonic and Stork?
Sonic
Sonic is a fast, lightweight and schema-less search backend that can be used as a simpler, more efficient alternative to Elasticsearch. It is designed to ingest and query text with minimal resources.
- Extremely low memory usage
- Schema-less ingestion
- Fast prefix and word search
- Simple text protocol
Stork
Stork is an open-source tool that builds a search index from your content and serves instant search on static sites using WebAssembly. It is small, fast, and requires no server-side component.
- WebAssembly search
- Static index files
- No backend
- Accessible UI
Sonic vs Stork: key differences
Both projects are written in Rust. Licensing differs — MPL-2.0 for Sonic versus Apache-2.0 for Stork. Sonic is the lighter option, starting around 32 MB of RAM against 64 MB for Stork. Sonic has the considerably larger community, at 21,349 GitHub stars versus 2,760. Sonic lists first-class Docker deployment; Stork does not.
Why pick each one
Choose Sonic if…
- Tiny resource footprint
- Very fast for autocomplete
Watch out for
- No relevance scoring or filtering
Choose Stork if…
- Instant client-side results
- Easy integration
Watch out for
- Best for smaller sites
- Manual index builds
Frequently asked questions
Is Sonic or Stork better?
Neither is universally better. Sonic has the larger community, while Stork is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Sonic and Stork free and open-source?
Yes. Sonic is licensed under MPL-2.0 and Stork under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Sonic and Stork with Docker?
Sonic: yes. Stork: check the project docs for container support.
Which is lighter on resources, Sonic or Stork?
Sonic has the smaller minimum footprint at 32 MB of RAM, compared to about 64 MB for Stork. Real-world usage depends on library size, user count, and enabled features.