SDCC is a retargettable, optimizing standard C (ANSI C89, ISO C99, ISO C11) compiler that targets a growing list of processors including the Intel 8051, Maxim 80DS390, Zilog Z80, Z180, Rabbit 2000, gbz80, Motorola 68HC08, S08 and STMicroelectronics STM8 targets. There also is incomplete support for the Microchip PIC16 and PIC18.
stegfs is a steganographic file system in userspace. It uses the FUSE module which allows it to be incorporated into more than just the Linux Kernel, i.e. it's also known to work in FreeBSD :) For more details visit: https://albinoloverats.net/projects/stegfs
Use the XBoo cable to upload a file to a GBA
This is a command line application to upload a file to a Gameboy Advance (GBA or GBA SP). It can work on Windows, Linux and *BSD platforms. It uses the parallel port, and can use PCMCIA, PCI and PCI express parallel port adapters. It won't work with USB to parallel adapters.
This project is the Linux wavplay command line utility used for playing "wav" files.