For a long time I have used Image Keyworder. A great tool for keywording my photos with tons of possibilities (copy/past, multiple files, thesaurus, Alamy mode et cetera).
However, further development and support has already stopped for many years ago.

Till yesterday the software was working fine for me at my Windows 7 computer. However yesterday, after a windows update, Imagekeyworder is not working any longer  .

It is a sad day for me. I will have to look for another keyword tool !!

www.imagekeyworder.com