Empathy is an instant messaging (IM) and voice over IP (VoIP) client which supports text, voice, video, file transfers, and inter-application communication over various IM protocols. Developed by The GNOME Project
License: Open Source
Empathy is a more feature-rich platform suitable for larger teams and organizations, offering integrations, analytics, and high user capacity. In contrast, appear.in is a simpler, more accessible tool ideal for small teams or casual meetings, though it lacks advanced features and integrations.