SasmSASM - simple crossplatform IDE for NASM, MASM, GAS and FASM assembly languages
fasmflat assembler 1 - reconstructed source history
Reloaded.AssemblerMinimal .NET wrapper around the simple, easy to use Flat Assembler written by Tomasz Grysztar. Supports both x64 and x86 development.
FASMUnofficial git history of flat assembler
InflameUser-mode Windows DLL injector written in Assembly language (FASM syntax) with WinAPI.
fasmFPGA Assembly (FASM) Parser and Generator