1.TheAlgorithms / Java
All Algorithms implemented in Java
+438 stars
from 66,264 · score 6.08
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2.opensearch-project / OpenSearch
🔎 Open source distributed and RESTful search engine.
+165 stars
from 13,781 · score 5.11
3.apache / doris
Apache Doris is a real-time analytics and hybrid search database for AI agents.
+157 stars
from 16,005 · score 5.06
4.apache / solr
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+14 stars
from 1,679 · score 2.71
5.codelibs / fess
Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.
+5 stars
from 1,137 · score 1.79
6.strapdata / elassandra
Elassandra = Elasticsearch + Apache Cassandra
+3 stars
from 1,715 · score 1.39
7.mancj / MaterialSearchBar
Material Design Search Bar for Android
+2 stars
from 2,004 · score 1.10