IMPORTANT! These ports are all maintained by different people. They may be significantly different from XTide 2 as documented here. If you have problems with a non-Unix port, please contact the correct maintainer, not me. I cannot help with anything but the canonical Unix distribution.
There are two ports to Microsoft Windows, both distributed in binary format:
(Ported by Dale DePriest. This information is only current as of XTide 1.6.2.)
Tide now includes support for OS2. This port has been specifically tested using the gcc/emx version 0.9c. XTide has also been ported specifically to support the os2 port of XFree86. To build your copy of tide:
To build xtide you must have the Xfree86 programming environment. Run 'make xtide.exe'.
EMX, beginning with 0.9c, does support Daylight Savings Time and Time Zone data. You will need at least fix01 to support tide and xtide. You must set the TZ variable to get this to work. An example would be 'set TZ=PST8PDT'. The -loctz switch will do this for you.
You can pick up a prebuilt copy of tide and xtide from hobbes.nmsu.edu, under the directory os2/unix. You must have an X environment to use xtide while tide will work in any environment. Also get os2/unix/emx09c/emxrt.zip if you don't have it.
(Ported by Dale DePriest. This information is only current as of XTide 1.6.2.)
If you have the emx/gcc build environment, you can build tide using the os2 makefile without modification. Further, the tide program that was built for os2 will run unmodified on a dos machine if you have the file emx.exe present somewhere in your path (or rsxnt.exe if you are using DPMI memory). See above, under OS/2 installation, for the location of the binaries.
The Macintosh port of the TTY client from XTide 1.3 is supported by Mikhail Fridberg (fridberg@pfc.mit.edu). It is available at http://www.universe.digex.net/~dave/files/MacTide133sit.hqx (binhexed Stuffit archive). A binary is included.
Several people have made ports of the graphical client to Macintosh, but for some reason they have all so far turned out to be [expletives deleted] who flout the GNU General Public License. These ports are probably available somewhere under a bogus name and without any source code, maybe even commercially, but I'm not tracking them.
Walt Bilofsky has implemented Tide Tool on this little "palmtop" computer, and judging from the picture it does produce output that closely resembles that of XTide's text mode. The URL for Tide Tool is http://www.toolworks.com/bilofsky/tidetool.htm.