Do you have customers, salesmen, depots, etc which you'd like to plot on a map of the UK? Or just maybe your favourite pubs? Mapwise is simple-to-use software at a bargain price (£15 incl. VAT).
The Gistix Toolkit offers desktop mapping at a sensible cost. A starter package provides lots of functionality. Using the Toolkit, you can extend this to provide a full tailormade solution.
Do you supply software which runs automatically or unattended on one Windows machine - and you would like it to be able to notify warnings or errors actively to a person on another Windows machine? GAFF provides a simple framework for doing just that.