ack is described as 'Ack is designed as a standalone (one perl file) replacement for 99% of the uses of grep. ack is intelligent about the files it searches. It knows about certain file types, based on both the extension on the file and, in some cases, the contents of the file' and is a File Search utility in the file management category. There are more than 10 alternatives to ack for a variety of platforms, including Linux, Windows, Mac, BSD and Self-Hosted apps. The best ack alternative is Agent Ransack, which is free. Other great apps like ack are ripgrep, dnGREP, grep and ugrep.
Easy install, seems pretty fast, works well on Windows with the provided binary