Flipper Zero firmware sources — official firmware source written in C language and licensed under GPL v3.
Flipper Build Tool (FBT) — all-in-one firmware development toolkit with Visual Studio Code support. Read FBT Documentation
Source code of Flipper Zero firmware packaged with build and debug toolkit (FBT)
Micro Flipper Build Tool (uFBT) — toolkit for developing user applications for Flipper Zero
Micro Flipper Build Tool (uFBT) — all-in-one toolkit for developing your applications for Flipper Zero. It automatically download and install latest firmware headers, debug symbols and building toolchain. uFBT provides full Visual Studio Code integration.