This, freeware, or rather careware Java-based tide and current prediction program is available at the website of Washington state math and sailing nut Paul Lutus. JTides looks good and appears to work well though I have yet to put my life on the line with it. Because it is careware, you have to be nice to people if you want to use it. Of particular interest to west coasters, a huge database of data sets for the BC coast is included. For me at least, exporting data to MS Excel seems to produce a more usable tide graph. Click the link above to reach the author's website. The archive is a svelt 1.4 MB, minuscule by Windows standards.