diff --git a/README.md b/README.md
index cd1622bb..ee45f9d6 100644
--- a/README.md
+++ b/README.md
@@ -755,6 +755,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
   * [Gigablast](http://www.gigablast.com/) - open source search engine. ([Demo](http://www.gigablast.com/), [Source Code](https://github.com/gigablast/open-source-search-engine)) `Apache` `C++`
   * [Searx](https://github.com/asciimoo/searx) - A privacy-respecting, hackable metasearch engine. ([Demo](https://searx.me/), [Public instances](https://github.com/asciimoo/searx/wiki/Searx-instances))
   * [Seeks](https://beniz.github.io/seeks/) - A websearch proxy and collaborative distributed tool for websearch. `AGPLv3` `C++`
+  * [Sphinx](http://sphinxsearch.com/) - open source search server. ([Source Code](https://github.com/sphinxsearch/sphinx)) `GPLv2` `C++`
   * [Yacy](http://yacy.net/en/index.html) - Peer based, decentralized search engine server. `GPL2` `Java`