Oh! Damn it I forgot about manticore -- I had seen it before but forgot to include it.

Eventually all of these projects will be highlighted on Awesome F/OSS (https://awsmfoss.com), but for now I'm just going to dump my bookmarks here for other people, since I'm leaving awesome projects out:

Search Engines

AWS OpenSearch https://github.com/opensearch-project/OpenSearch

https://github.com/opensearch-project/OpenSearch-Dashboards

https://github.com/opensearch-project/perftop

https://github.com/go-ego/riot

https://groonga.org/ https://github.com/groonga/groonga

https://github.com/meilisearch/MeiliSearch

https://github.com/mosuka/bayard

https://github.com/nezaboodka/nevod

https://github.com/searx/searx

https://github.com/stryku/okon

https://github.com/toshi-search/Toshi

https://github.com/typesense/typesense

https://github.com/valeriansaliou/sonic

Algolia

https://github.com/marconi1992/algolite

https://quickwit.io/

https://github.com/quickwit-inc/quickwit

https://docs.meilisearch.com/

https://github.com/prabhatsharma/zinc

phalanx https://github.com/blugelabs/bluge https://github.com/mosuka/phalanx https://github.com/mosuka/blast

ManticoreSearch

https://github.com/manticoresoftware/manticoresearch

https://github.com/manticoresoftware/docker

https://manticoresearch.com/blog/manticore-alternative-to-el...

https://manticoresearch.com/

https://manual.manticoresearch.com/Introduction

https://forum.manticoresearch.com/t/manticore-search-cheatsh...

https://forum.manticoresearch.com/

Whoosh https://whoosh.readthedocs.io/en/latest/

https://pypi.org/project/Whoosh/

lyra https://github.com/nearform/lyra

https://nearform.github.io/lyra/

https://github.com/LyraSearch/lyra

https://lyrasearch.io/

flexsearch

https://github.com/nextapps-de/flexsearch#performance-benchm...

https://pagefind.app/docs/

Lucene

https://github.com/apache/lucene

https://lucene.apache.org/

ZincSearch

https://zincsearch.com/

Solr

https://solr.apache.org/

https://solr.apache.org/operator/

https://solr.apache.org/guide/solr/latest/getting-started/so...

https://github.com/apache/solr

https://solr.apache.org/guide/solr/latest/deployment-guide/s...

Konnu https://gitlab.com/shadowislord/konnu

Quickwit QuickWit + Clickhouse

https://clickhouse.com/docs/en/guides/developer/full-text-se...

https://clickhouse.com/docs/en/sql-reference/functions/strin...

There is no way I can get to running all of these (this project was supposed to be quick!!), but I will run the ones I noted earlier, and probably manticore too since it was high on my list since it's quite polished looking.

+ Milvus (https://github.com/milvus-io/milvus) for large scale similarity/semantic search.

+ xapian which has been around a while, and while gpl licensed, is quite capable https://xapian.org/

Xapian is great, especially when you need a a C/C++ library rather than a separate service. Kinda like an sqlite for search. Some of my favorite tools like notmuch and recoll use it.

I'd encourage you to maintain and publish your list of search engines. Even if you aren't supporting them.

The list has value on its own, especially if you maintain it.

Yup this is exactly why I started Awesome F/OSS (https://awsmfoss.com) — I have similar lists for a lot of software and just need to make sure they’re somewhere else other than just my browser!

+ Weaviate for vector based search. Has a BSD-3 license. https://weaviate.io/developers/weaviate/current/