"Zoekt, en gij zult spinazie eten" - Jan Eertink ("seek, and ye shall eat spinach" - My primary school teacher) Zoecat is a text search engine intended for use with source code. (Pronunciation: roughly as you would pronounce "zooked" in English) Comment: This has been the maintained source for Zoekt since 2017, when it was forked from the original repository github.com/google/zoekt. Zoecat supports fast substring and regexp matching on source code with a rich query language that includes Boolean operators (AND, OR, NOT). It can search individual repositories, and search across multiple repositories in a large codebase.