Need some help finding frequencies for your iPod to transmit to your car on? Look here first!
A huge list of default usernames and passwords for many operating systems and network-enabled devices.
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A free archive of US Army field manuals for the downloading.
David MacKay has put the textbook he wrote online for everyone to download in a variety of formats. If you find it useful, consider buying a copy.
The full text of The Handbook of Applied Cryptography, one of the best textbooks available in the field. The original authors have gotten permission from the publisher to put the text online as sets of PostScript and .pdf files for anyone to download and share.
The companion book to the Doctor Strange comics, by Cat and Nagasiva Yronwode.
A free, online book on the C programming language. There is also a downloadable .pdf file of the contents of the e-book so you don't have to try to archive the whole website.
A database of manufacturers of home office routers and their default login credentials.
3697 links, including 185 private