Scientific American - The Scientific American Magazine.
AbeBooks - A good place to find books that Amazon doesn't have (or list) and old, old books.
Winzy - A search site that seems to give better math search results than raw Google inquiries. Check it out!
BBC NEWS - The world's news presented in a most civilized manner. The science and technology sections are especially good for a general world news source. The entire site, many years in standing, may be searched for prior references. All articles include links to supporting sources referenced in each article.
Mathematical Works of the 17th & 18th Centuries - Translations of early works from the original Latin by Ian Bruce.
Slide Rules - A source of slide rules for sale with lots of links to other slide rule sites.
N-View Editor - A good web page editor easier to use and about the same power as FrontPage, with user manual, spell checker and more. Free.
Encyclopedia Britannica 1911 - Unbelievably authoritative and exhaustive by today's standards. Machine OCR'd, it has occasional typos. All entries are down loadable and free.
Convert - A free conversion program that converts almost any unit of measure to another.
Peanut Software - Check out these free professional quality programs from Roger Parris, an Exeter Academy professor: WinPlot (plots nearly any equation or function), WinStat (a statistics package), and WinGeom (a geometry drawing package.) I use WinPlot all the time to write and solve problems for Algebra II through pre-calculus and to make overheads.
Web Speed Test - A reliable worldwide internet speed tester. Measures up and download speeds and ping times. Just click on the map (you can slew the map to point anywhere in the world) and the speedtest evaluates your internet transfer speed to that node. Note: the "golden" node is the one you are attached to.
The Engineer - A wonderful source of articles about current - and old - technical developments. A recent article describes how, with some 5000 man-hours of research using the latest CAD software, a group analyzed how the Great Pyramid in Egypt must have been built. Analysis showed that the external ramp and cranes wouldn't work! Click on Classic Articles to find stories such as the solution to "The Great Stink of 1858." Try it, you'll like it!
File Extensions - This site instantly finds and identifies the program that generated that wierd file extension that you can't identify.
SCIgen - An Automatic CS Paper Generator - This program generates random incomprehensible technical papers. Just fill in the "authors" that you want credited, and you'll get an authoritative, comprehensive and detailed paper that in the end cannot be understood. As a practical test of the results, the programmers were actually invited to speak at a conference based on a paper produced by an earlier version of this program. Caution: use only on good natured teachers that can take a joke!
www.archive.org - An archive of the entire web. Looking for something that's disappeared from the web? This site searches for tidbits that were on the web clear back into the '90s! To use, find the panel "WAYBACKMACHINE" on the front page, fill in what you want to look for, then click on SEARCH. Sometimes it takes a little while, but if it was ever on the web, chances are you'll find it.