Harbour is a free, cross-platform compiler for the Xbase language. It is designed to be as compatible with CA-Clipper as humanly possible. Harbour ships with full source and makefiles, and combined with one of many C compilers will create executables which run natively on the following platforms: Linux, FreeBSD, DOS, Windows 3.x/9x/NT/W2000, and OS/2.
Turbo Vision is a C++ library that provides a very nice user interface for console applications. This UNIX port is based on Borland's version 2.0 with fixes. It was made to create RHIDE, a nice IDE for gcc and other GNU compilers. The library supports /dev/vcsa devices for fast access to local consoles, and it uses ncurses to run from telnet and xterm. This port, in contrast to the Sigala's port, doesn't have "100% compatibility with the original library" as goal. Instead, many modifications were made for the sake of security (especially buffer overflows). This port is also available for the original platform (DOS).
NASM is an 80x86 assembler designed for portability and modularity. It supports a range of object file formats including Linux a.out and ELF, COFF, Microsoft 16-bit OBJ, Win32/64, and Apple Mach-O. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's but less complex. It supports all currently known opcodes, and has advanced macro capability. It includes a disassembler as well.
Setedit is a text editor specially designed for programmers. It has a nice interface with mouse support, menus and windows (text mode). The editor is a very good choice for people with DOS background, especially people accustomed to Worstar and Borland editors. The editor has overlapped windows so you can see more than one file at the same time, configurable syntax highlighting, macros, rectangular selection, block indentation, as well as customizable keyboard shortcuts and menus.
RAR is a general purpose archiving and compression program competing with/replacing programs such as PKZip, ARJ and others. RAR offers significantly improved compression ratios, easier use and a better price as well as supporting long file names, disk spanning and self-extracting file creation. RAR introduces an original compression algorithm. It allows higher compression ratios than other PC archiving tools, especially on executable files, Object libraries, large text files, etc.