Gábor Horváth has been developing the raw photo converter RawTherapee single-handedly, on Linux and Windows, since 2006. The application has been freeware the entire time, with Horváth accepting Paypal donations through the project's web site. Consequently, although there are significant changes in the 3.0 alpha release announced on January 4th, it was arguably bigger news that the project was switching to the GPLv3.