Manticore Search is an open-source database that was created in 2017 as a continuation of Sphinx Search engine. They rewrote the code and released it as open-source.
https://github.com/manticoresoftware/manticoresearch
https://manual.manticoresearch.com/
Manticore Software Ltd
2017
Elixir, Go, Java, JavaScript, Perl, PHP, Python, SQL
ClickHouse, Elasticsearch, MariaDB, MySQL, Sphinx