The Greenphone was a smartphone developed by Trolltech with Qtopia Phone Edition, a GUI and application platform embedded in Linux using mostly free and open source software.

The proprietary software on the phone includes the communications stack and the package manager.

On October 22, 2007, Trolltech announced that it had sold all inventory of Greenphones and would no longer continue production, having achieved its goal of promoting the Qtopia platform and gaining interest from developers.

Focus was shifted to developing the Neo FreeRunner phone.

Trolltech intends to continue supporting the Qtopia Greenphone community,[2] and alternative hardware, such as the Neo 1973.