iFree Skype Recorder - iFree Skype Recorder is a powerful and easy-to-use tool for recording Skype voice conversations.
Virtual Audio Cable - Ever wanted to record your speaker output? (loopback) This is for you.
Evaer Skype Video Recorder - Evaer Skype Video Recorder is an easy-to-use tool for recording Skype video and audio calls.
Loopback by RogueAmoeba - Get all the power of a high-end studio mixing board, right inside your Mac!
Pamela for Skype - A versatile and easy to use Skype audio and video recording software. Features
JACK Audio Connection Kit - JACK Audio Connection Kit|Home