SmileIDE is simple Integrated development environment. Support programming language: Assembler(nasm). Interface language: multilanguage(English, Russian...). Supported OS: Windows with .net framework, Linux with Mono.
A assembler plugin for Eclipse, to use different assembler-programs (e.g. NASM, TASM or MASM) as back-end compiling. It include linker and debugger controlling, too. And you get a optimiced ASM-File-Editor with this plugin.
avrLab is an IDE (integrated development environment) for AVR microcontroller from ATMEL. It includes an editor with syntax highlighting. avrLab includes support for macro assembler (tavrasm and avra) as well as support for accessing the AVR via uisp.