SearXNG
Search EnginesPrivacy-respecting metasearch engine aggregating many sources
Replaces Google Search, Bing
Best No-Database Search Engines for self-hosting
The 19 best No-Database search engines you can self-host, ranked by community traction.
Sonic
Search EnginesFast, lightweight schema-less search backend
Replaces Algolia, Elasticsearch
Tantivy
Search EnginesFull-text search engine library written in Rust
Replaces Elasticsearch
SearX
Search EnginesThe original privacy-respecting metasearch engine
Replaces Google Search, Bing
bleve
Search EnginesEmbeddable full-text search and indexing library
Replaces Elasticsearch, Algolia
Lunr.js
Search EnginesSmall full-text search library for the browser
Replaces Algolia, Elasticsearch
Pagefind
Search EnginesStatic-site search that runs fully in the browser
Replaces Algolia, Elasticsearch
Apache Lucene
Search EnginesFoundational open-source text search engine library
Replaces proprietary search SDKs
tinysearch
Search EnginesTiny WebAssembly-powered static site search
Replaces Algolia
Stork
Search EnginesFast, accessible static site search in WebAssembly
Replaces Algolia
Marginalia Search
Search EnginesIndependent search engine focused on the non-commercial web
Replaces Google Search
Pyserini
Search EnginesReproducible information retrieval toolkit
Replaces Elasticsearch
Websurfx
Search EnginesPrivacy-respecting metasearch engine written in Rust
Replaces Google Search
Xapian
Search EnginesMature open-source probabilistic search engine library
Replaces Elasticsearch
Groonga
Search EnginesOpen-source full-text search engine and column store
Replaces Elasticsearch
LibreX
Search EnginesPrivacy-respecting metasearch engine and proxy
Replaces Google Search
4get
Search EnginesLightweight privacy-friendly metasearch proxy
Replaces Google Search, Bing
Whoosh
Search EnginesPure-Python full-text indexing and search library
Replaces Elasticsearch
LibreY
Search EnginesPrivacy-respecting metasearch engine
Replaces Google Search
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| SearXNG | ≈5-minute setup | Easy | 256 MB | AGPL-3.0 | 38,366 |
| Sonic | Under-an-hour setup | Medium | 32 MB | MPL-2.0 | 21,357 |
| Tantivy | Read-the-docs project | Hard | 128 MB | MIT | 16,213 |
| SearX | Under-an-hour setup | Easy | 256 MB | AGPL-3.0 | 13,556 |
| bleve | Read-the-docs project | Medium | 128 MB | Apache-2.0 | 11,235 |
| Lunr.js | Read-the-docs project | Easy | 64 MB | MIT | 9,204 |
| Pagefind | Read-the-docs project | Easy | 64 MB | MIT | 5,512 |
| Apache Lucene | Read-the-docs project | Hard | 256 MB | Apache-2.0 | 3,585 |
| tinysearch | Read-the-docs project | Medium | 64 MB | MIT | 2,977 |
| Stork | Read-the-docs project | Easy | 64 MB | Apache-2.0 | 2,758 |
Quick picks
- Most adopted: SearXNG (38,366 GitHub stars).
- Lightest footprint: Sonic (from 32 MB RAM, against 4,096 MB for the heaviest here).
- Fastest to deploy: SearXNG (verified single-container compose).
- Licensing: 7 of 19 use AGPL-3.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged No-Database within the search engines category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.