THe simplest way it to catalog the songs in folders. (or several folders, if there is a lot)
When you open the folder ... organize the files by "list" and when you want to search - just hit the first letter of the title .... and scroll till you get to it. Hit the enter key to open the lyric page. The software is already in your pc. Your word processor will probably open up the docs by default, but you CAN asign a different program if you need special features.

If you only have a few dozen, or even a few hundred .... one folder is probably the easiest way to go, so you don't have to search for the right folder too.