Pidgin is a free and open-source chat client which supports AIM, Google Talk, ICQ, XMPP protocols. Developed by Pidgin
License: Open Source
Pidgin is a versatile messaging client that supports multiple protocols and is ideal for text-based communication, while FaceTime is a video and audio calling app designed for Apple users, offering high-quality calls but limited to the Apple ecosystem. Pidgin excels in customization and cross-platform support, whereas FaceTime provides a seamless experience for video and voice calls.