Sharp80 v1.1.0.99 is released. Sharp80 is a full-featured emulator of a TRS-80 Model III microcomputer. It is free of charge and all source code is publically available. It includes:

* Complete and self contained with ROM and DOS built in
* Faithful Z-80 CPU emulation (including undocumented opcodes -- passes all ZEXALL opcode tests)
* Runs at standard 2.03MHz (or run up to 100MHz on a modern PC)
* Bundled disk and tape library includes applications, utilities, operating systems, and games
* Supports up to four virtual floppy drives, and all major virtual floppy formats (DMK, JV3, JV1)
* Tape drive emulation supports high and low speed reading and writing (CAS format)
* Windowed and full-screen modes with zoom
* Authentic sound support
* Built-in Z-80 assembler and disassembler
* Real-time monitor of Z-80 CPU internals and IO device status
* Printer to file support
* Save the entire state of the computer with snapshots
* Support for all video modes, including wide characters and Kanji mode

Download: Sharp80 v1.1.0.99
Source:Here