The Genome is a program component framework
additional/alternalive includes set to flat assembler
A Java disassembler.
Libry Compiler 4.1
An assembler and disassembler for the JVM (Java Virtual Machine)
MILE - MIPS Interactive Learning Environment
Assembler, Disassembler, Processor Emulator
Coalesce for .NET
Michel Max - WPF Color Picker