Software-Promoter does one thing for you: it helps you to promote your software. There is free big sites collection for promotion purposes.

Network Virtual Serial Ports Driver is an advanced utility, the purpose of which is to emulate null-modem cable on computers located in a TCP/IP LAN or connected to the Internet by creating any number of pure virtual serial ports in your system.

Here is a free ebook on Windows basics. The idea is to deal with practical aspects of using Windows rather than discuss the mundane stuff.

NetMarks Manager lets you easily store and manage 1000's of web bookmarks and integrates with Internet Explorer and Firefox. Take notes about bookmarks, search, preview sites, import/export, view as web pages, synchronize, manage duplicates and more

Basic Algebra Shape-Up helps students master specific basic algebra skills. Concepts covered include creating formulas; using ratios, proportions, and scale; working with integers, simple and multi-step equations.

Let your screen take you away to a quite place in the forest. Watch the little peaceful bugs and ants running about their business. A funny little spider making a web. Dew drops on the leaves. Birds twittering in the branches above.Peace and serenity

1000 word English vocabulary drill for Spanish speakers divided in levels of 100 each and sub-divided into nouns, verbs, pronouns, adjectives, adverbs, prepositions and conjunctions for graduated learning and scoring.