reaper is popular. it's cheap (or free). i also like tracktion. v4 is free and it's a powerful, simple, single screen daw. there's always audacity too, but it's

reaper is popular. it's cheap (or free). i also like tracktion. v4 is free and it's a powerful, simple, single screen daw. there's always audacity too, but it's pretty limited. i've also heard good things about wavosaur (free). dumb name, but simple for quick audio editing.