Add LibreX (#3610)

README.md

@@ -1709,6 +1709,7 @@ A [search engine](https://en.wikipedia.org/wiki/Search_engine_(computing)) is an
 - [Gigablast](https://www.gigablast.com/) - Open-source search engine. ([Source Code](https://github.com/gigablast/open-source-search-engine)) `Apache-2.0` `C++`
 - [Jina](https://github.com/jina-ai/jina/) - Cloud-native neural search framework for any kind of data. `Apache-2.0` `Python`
 - [librengine](https://github.com/liameno/librengine) - Private web search engine. `GPL-3.0` `C++`
+- [LibreX](https://github.com/hnhx/librex) `⚠` -  Framework and javascript free privacy respecting meta search engine. `AGPL-3.0` `PHP/Docker`
 - [Manticore Search](https://github.com/manticoresoftware/manticoresearch/) - Much faster alternative to Elasticsearch for full-text search and data analytics. Provides much lower response time for small, medium and big data. `GPL-2.0` `Docker/C++`
 - [MeiliSearch](https://www.meilisearch.com) - Ultra relevant, instant and typo-tolerant full-text search API. ([Source Code](https://github.com/meilisearch/MeiliSearch)) `MIT` `Rust`
 - [OpenSearch](https://opensearch.org) - Open source distributed and RESTful search engine. ([Source Code](https://github.com/opensearch-project/OpenSearch)) `Apache-2.0` `Java`