Yad - Yad (yet another dialog) is a fork of Zenity with many improvements, such as custom buttons...
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Glade - Glade is a RAD tool to enable quick & easy development of user interfaces for the GTK+ toolkit...
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
wxFormBuilder - wxWidgets is an excellent framework that enables the creation of multi-platform applications with...
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.