Sorry for the spelling and phonetic errors in the text.
Owner and main writer of MintGuide.org is not a native English speaker.
FSearch during the first run performs indexing of files and directories, the search is performed in real time, search queries are processed and displayed immediately as you type letters and characters. The search results appear in a sortable by multiple parameters list, found the file or directory can be opened (in application "default" or in the file Manager), you can copy the path of file or directory to the clipboard.
FSearch is a stand-alone application (as ANGRYsearch) and does not require the presence of a specific file Manager or your work environment. Search support for "regular expressions" supported by using the PCRE library (Perl-Compatible Regular Expression).
-Instant (as you type) results
-Filter support (only search for files, folders or everything)
-Fast sort by filename, path, size or modification time
Installation latest version into Linux Mint:
1. Download the DEB package of the latest version
2. Install it