Instantbird is a cross-platform instant messaging client based on Mozillas XULRunner and the open source library libpurple used in Pidgin. Developed by Florian Quèze and Quentin Castier
License: Open Source
ICQ is a rich messaging platform that offers multimedia features and a user-friendly interface, making it great for casual users. In contrast, Instantbird is an open-source, customizable client that supports multiple protocols and prioritizes user privacy, making it ideal for users looking for a lightweight and secure messaging experience.