Flipper Zero firmware sources — official firmware source written in C and licensed under GPLv3.
Flipper Build Tool (FBT) — all-in-one firmware development toolkit with Visual Studio Code support. Learn more: FBT Documentation.
Source code of Flipper Zero firmware packaged with build and debug toolkit (FBT)
Applications SDK
Micro Flipper Build Tool (uFBT) — toolkit for developing user applications for Flipper Zero
Micro Flipper Build Tool (uFBT) is an all-in-one toolkit for developing your applications for Flipper Zero.
It automatically downloads and installs the latest firmware headers, debug symbols, and building toolchain. uFBT provides full Visual Studio Code integration.