Comment For time-lapses (Score 1) 111
What has worked out really well for me is a simple Python script that uses QT to generate movies from individual frames. I've used it for time-lapses, but it could probably be used for stop-motion movies too. Of course, you don't get all the composing features of these tools, but it's free and works exceedingly well.
http://www.ecogito.net/anil/2010/09/howto-create-a-time-lapse-movie-from-a-sequence-of-images/
http://www.ecogito.net/anil/2010/09/howto-create-a-time-lapse-movie-from-a-sequence-of-images/