The Baen Free Library: a number of free eBooks to download. [The Fifth Imperium has many of these books on downloadable CDs—from CDs that are sometimes included in bound Baen books. (In fact, the CDs contain books that haven’t yet been added to the Free Library site.)] (The Baen Ebook site has more free books)
Cyrket allows you to browse the Android market from a PC.
With the Suvudu Free Book Library, you can read the first book in some of their most acclaimed series absolutely free!
calibre is a one stop solution to all your e-book needs. It is free, open source and cross-platform in design and works well on Linux, OS X and Windows. calibre is meant to be a complete e-library solution and thus includes library management, format conversion, news feeds to ebook conversion, as well as e-book reader sync features and an integrated e-book viewer.
HandyShopper for Pocket PC is a tool for managing your shopping lists; it is free.
Pocket Programming Language (PPL) is a fast and easy-to-learn programming language that is fully object-oriented. PPL runs on all PocketPCs and PC's. Programs written for one system are 100% compatible with each supported platforms. PPL comes with a complete development environment on the PC and PocketPC allowing you to develop anywhere from your PDA. (support forums)
GetHighTech has repair parts for your damaged PDA.
Calculator.org: a cool, free calculator for your Pocket PC or Windows PC.
Get GSFinder for your Pocket PC. It's much superior to the built in file explorer; it is free.
SharpDeck: produces software for your Pocket PC. SharpVault is an easy-to-use utility to help you to keep track your passwords, credit cards and other confidential information. It is free!