The best alternatives to SpeedDial for macOS are ScreenTime, Tok 1.0, and MyPhotostream. If these 3 options don't work for you, we've listed a few more alternatives below.
ScreenTime is a screen sharing plugin for FaceTime (for macOS). It appears as a webcam on FaceTime and lets you show your desktop during a FaceTime video call.
Tok is a spotless macOS app that lets you instantly call your Slack teammates. There is no faster way to discuss what matters without banging on the keyboard.
The easiest way to start a video conferencing. Everyone can build/join a video call room within just 2 clicks (less than 3 secs). Available for up to 20 members and 65 minutes without any registration or downloads.