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From Open Watcom
Open Watcom 1.7a
Note to existing Open Watcom users: Since version 1.4, there are two standalone packages, one for C/C++ users and another for Fortran users. They can be installed separately, or into a single directory for combined C/C++/Fortran development.
Note to DOS users: No maintainer for the DOS installer has been found yet. The Win32 and OS/2 installers are self-extracting ZIP archives; they can be unpacked on DOS and the DOS command line tools can be used.
Downloads
See also:
Main downloads:
| Mirror | Installers (Windows, OS/2) | Source Code |
|---|---|---|
| ftp.skynet.be (Belgium) | HTTP, FTP | HTTP, FTP |
| ftp.heanet.ie (Ireland) | HTTP, FTP | HTTP, FTP |
| openwatcom.org (US) | HTTP, FTP | HTTP, FTP |
NOTE: If you run Open Watcom on Windows Vista, you need to download the help viewer to access the on-line help files.
Open Watcom W32API Version 0.1 (Pre-Alpha)
Since the summer of 2006, work has been in progress to write a set of Win32 headers for Open Watcom in order to eliminate the dependency on MinGW and provide better compatibility, more complete coverage, and hopefully fewer bugs. At this stage, the SDK headers have been completed. A pre-alpha release is being made available to allow users to test their code with these headers while the DDK headers are written. This release is available for download below.
| Mirror | W32API Pre-Alpha |
|---|---|
| openwatcom.org (US) | HTTP, FTP |

