IDE EmBlocks.

[Leff]

http://www.emblocks.org/web/
"Em::Blocks is a free C/C++ IDE built to meet the most demanding needs of its users working in the field of embedded software development It is designed to be very extensible and fully configurable.
EmBlocks can use any debug probe and is not limited to one type or brand.
The integrated STlink GDB server also supports Live Data and Semihosting."

"STM32 + EmBlocks"
http://habrahabr.ru/post/191624/

"EmBlocks — IDE для STM32"
"Это IDE на основе Code::Blocks — кросс-платформенной быстрой среды разработки со встроенным скриптовым языком и очень гибкой настройкой, ориентированной под С/С++ разработку."
http://habrahabr.ru/post/191468/