Cutter is a Qt and C++ GUI powered by radare2. Its goal is making an advanced, customizable and FOSS reverse-engineering platform while keeping the user experience at mind. Cutter is created by reverse engineers for reverse engineers.
Cutter is actively maintained by its developer team and releases a new feature every ~5 weeks. Naturally, Cutter enjoys the fast paced development of its core, radare2. This makes the project one of the most actively developed RE frameworks.