The Watcom C/C++ compiler is esteemed amongst DOS developers by the high execution speed of the compiled code it produces and for having been one of the first compilers to support the Intel 80386 “protected mode”. Though no longer sold commercially by Sybase, the Watcom C/C++ compiler and the Watch Fortran compiler have been made available as the open source Open Watcom package with the assistance of SciTech Software. The code is portable, and like many other open source compiler projects such as gcc, the watcom compiler backend (code generator) is retargetable. The open watcom compiler can be operated from, and generate executable code for, the DOS, OS/2 and Windows operating systems. Open watcom also supports NLM targets for Novell NetWare. There is ongoing work to retarget it for the Linux and modern BSD (eg. FreeBSD) operating systems, running on x86, PowerPC and other processors. The Open Watcom C/C++ version 1.4 release on December 2005 has Linux x86 as an experimental target, supported from NT or OS/2 host platforms. There is code for an abandoned QNX version, but libraries necessary for it to be compiled could not be released as open source. The current version of Watcom is 1.7a was released in October 2007.

The Borland C++ Compiler 5.5 (BCC) is the foundation and core technology of C++ Builder 5. Borland C++ Compiler 5.5 is a fast 32-bit optimizing compiler. It includes the latest ANSI/ISO C++ language support, including the STL (Standard Template Library) framework and C++ template support and the complete Borland C/C++ Runtime Library (RTL). Also included in the free download are the Borland C/C++ command line tools such as the high performance Borland linker and resource compiler.

The free download software includes:

• Borland C++ Command Line Tools
• Borland C++ Compiler v5.5 (bcc32)
• Borland Turbo Incremental Linker (tlink32)
• Borland Resource Compiler / Binder (brc32, brcc32)
• C++ Win32 Preprocessor (cpp32)
• ANSI/OEM character set file conversion utility (fconvert)
• Import Definitions utility to provide information about DLLs (impdef)
• Import Library utility to create import libraries from DLLs (implib)
• Borland Turbo Dump to structurally analyse EXE, OBJ and LIB files (tdump)
• Librarian for symbol case-conversion, creating extended libraries and modifying page size (tlib)

Included Libraries

• Borland C/C++ Runtime Library
• ANSI/ISO Standard Template Library (STL)

In my opinion it is not convenient option, in compared to graphical application DevCpp, but, perhaps, someone finds it in another way.

DevCpp 5 – free software to develop on c /
cpp.
Included features are the following.

• DevC++ supports GCC-based compilers
• DevCpp contains integrated debugging(using GDB )
• DevCpp supports for multiple languages (localization)
• DevC++ contains class Browser
• DevCpp includes code
  Completion
• Debug variable Browser
• Project Manager
• Customizable syntax highlighting editor
• DevC++ allows quickly create Windows, console, static libraries and DLLs
• Support of templates for creating your own project types
• Makefile creation
• Edit and compile Resource
  files
• Tool Manager
• Print support
• DevCpp includes find and replace facilities
• Package manager, for easy installation of add-on libraries
• CVS Support
• To-Do List
• CPU Window