Some sites with comedic monologue scripts are FreeDrama.net, iComedyTV.com and TheatreHistory.com. Free Drama also offers short monologues, small-cast plays, short scripts and skits, one act stage play scripts and stage play scripts for children and family. It also offers acting tips and a free online acting school.
iComedyTV has articles on comedy, scripts, biographies of comedians, a directory of writers and listings for comedy clubs. It also has a forum and video sections for skits, parodies, best movies, stand-ups and women's topics.
Theatre History has a script archive containing both comedies and dramas. It also has a bookstore with sections divided by country, genre and theme.