Hobby operating system, bootloader, kernel, drivers, C library
Bibliography manager for Mac OS X
Portable multi-file text editor & the smallest full-function vi clone
An integrated word processor, spreadsheet and database for RISC OS
An integrated word processor and spreadsheet for RISC OS and Windows
OS bootable from Linux,Windows and others partitions as auxiliary OS
elvis, a vi text editor clone
Vim, the text editor, for Mac OS X