WORDPLAYER: Professional Secrets for Screenwriters - Simply put, this site gives away secrets. Professional secrets. From working screenwriter Terry Rossio. Secrets weighted specifically toward selling scripts to Hollywood. So if you want to make a sale, get an assignment, be able to quit that day job... Wordplayer is for you!
Plotbot is a collaborative screenwriting application. You can write with as many or a few people as you want--right from your browser! No software to install, just buzzwordalicious AJAX!