A nonprofit organization run by volunteers, it provides a collection of guitar tablature for thousands of songs, free of charge. OLGA is a great example of a newsgroup turned FTP site turned Web site.
It developed out of the Usenet newsgroups alt.guitar.tab and rec.music.makers.guitar.tablature. OLGA is made available worldwide thanks to the generosity of various mirrors.
Files have been uploaded to OLGA by Internet users since 1992. OLGA also contains lessons, chord charts, software, information on building guitars, and many links to other guitar-related Web sites.