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CryptoPP is a powerful, cross-platform, public-domain licensed, encryption library for C++. It provides symmetric and public key cryptographic algorithms and utilities for programmers who wish to add encryption functions to their applications. This tutorial shows how to integrate this library into your application. Examples include functional file-encryption applications.

If your GUI-based calculator is not up to the challenge, is your next alternative a spreadsheet? If yes, you would do well to look at GNU bc. It is, indeed, a superb replacement. You might find that you never go back to using the clunky GUI equivalent.

GUI-based P2P clients may be ubiquitous, but they are sub-optimal substitutes. The truly powerful P2P clients are of the command-line variety. This article is a howto on amulecmd usage.

Ever wonder how they calculate businesses within a 50-mile radius of an input ZIP code? There are some expensive solutions out there. This one show you how to do it for Free (note capitalization).

Another article for the command line maestro. This one digs into the programmer's toolkit to come up with a hidden gem. It is called "make" and it is not just for programmers. Use it to take your command line skills to the next level.

The Unix shell provides marvelous constructs and mechanisms that allow you to create useful applications. With very little effort. Here's an example that demonstrates the power and the elegance of the Unix shell.

Cygwin makes it possible for Linux command-line maestros to function in a Windows world. This article demonstrates some advanced Cygwin concepts and tips to make the most of your Cygwin installation.