cgasm

cgasm is a terminal‑based, offline tool that provides documentation for x86 assembly instructions. It runs as a single, statically linked binary with no external dependencies, and the instruction data is compiled directly into the executable, allowing it to be used on any platform supported by Go after cross‑compilation.

The utility supports fuzzy searching of instruction names, returning concise summaries that include the mnemonic, a brief description of its operation, and relevant encoding details. An optional verbose flag expands the output to show full opcode tables, operand encodings, mode specifications, and feature flags, matching the format of traditional reference manuals.

Because it is self‑contained and invoked from the command line, cgasm is suitable for developers, reverse engineers, and anyone needing quick, reliable access to x86 instruction information without an internet connection. Its stable release indicates a mature codebase ready for regular use.