Callnote Premium is a Free app for recording Skype, Hangouts, Viber, Facebook, GoToMeeting and WebEx Audio&Video Calls.
Record audio content on your Mac and export the results to various formats.
IMCapture for Skype (was SkypeCap) captures and records audio and video calls made from Skype.
Organize and share recordings of your Internet audio and video calls.
Call Recorder for FaceTime allows you to record FaceTime audio and video calls.
G-Recorder is a simple yet powerful call recorder.
Record FaceTime audio and video calls directly to your Mac.