The Catweasel Floppy Read/Write Tools are a set of tools for owners of Catweasel MK1 ISA and Catweasel MK3/MK4 PCI universal floppy disk controllers. cw2dmk reads several kinds of floppy disk, some of which ordinary PC controllers have trouble with, and save them in the DMK disk image format used by TRS-80 emulators. It can also handle any disk written using a Western Digital 177x/179x floppy disk controller, a PC-style NEC765-compatible controller, or a Digital Equipment Corporation RX02 controller. dmk2cw writes any DMK image back to a floppy. jv2dmk and dmk2jv3 convert images between DMK and JV1 and JV3 formats without requiring Catweasel hardware.
Frodo is a free, portable C64 emulator. It focuses on the exact reproduction of graphical effects possible on the C64, and comes in three "flavors" (Frodo, Frodo PC, and Frodo SC) with increasingly higher quality of emulation, but at the cost of higher processing power requirements. Frodo has been ported to a number of systems, including handheld computers. The Unix version can use either SDL, X11, or SVGAlib to display the graphics.
spim is a self-contained software simulator for running R2000/R3000 assembly language programs. It reads and can immediately execute files containing assembly language code. spim also provides a debugger and simple set of operating system services. spim provides both a simple, textual interface and a fancier, graphical interface. The package includes complete source code and documentation.
TinySID is a very small SID player. Current features include 99% 6510 CPU emulation and fat 6581 SID emulation including filters (which sound different to other players). It has nothing to do with other projects such as SIDPlay, and the 6510/6581 emulation is based on routines by Tammo Hinrichs that have been further developed.