What are some alternatives?
When comparing SuperTintin and Zeplin, you can also consider the following products
Call Recorder - Record Mac Skype Calls - Automatically record and save call audio and video on your Mac.
Invision - Prototyping and collaboration for design teams
Callnote Audio Video Call Recorder - Callnote Video Call Recorder for Skype, Hangouts, Meet, Facetime, Facebook Messenger, Viber, GoToMeeting, Zoom Calls. Edit, Transcribe, Share Recordings.
Framer - Bring your designs to life.
Django Automatic Call Recorder - Django Automatic Call Recorder: A full featured Call Recorder for your device.
Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.