Hi, Lee
Anytxt is committed to be a leading free desktop full-text search tool.
The first, Anytxt has supported LibreOffice and OpenOffice and all ODF file formats, but you need to add a LibreOffice document with Tools -> Index Manager -> File Types, then you can search it.
Second, ‘without running the installer every time’, we are optimizing it, you will meet this feature in next version.
Thank you.
Best.