Why? Well, because they contain huge amounts of slick, useful, QA'd functionality which will accelerate my development - so they represent superb *value* for money.
Here are some of my notes so far:
- Telerik - have a huge set of controls including rich text editing, super framework libraries (like containers and transitions), and lots and lots of charting. I've attended a couple of their webinars and clearly they've got good functionality now, plus lots more coming every quarter.
- Infragistics - a fairly large set of functionality again including grids, menus and a docking framework
- Dundas - seems to be mainly focussed on Business Intelligence (BI) dashboards - so lots of charts.
- Actipro - a much smaller set of functionality focussed around an MsDev like code editor.
So far... I'm tempted to buy Telerik with the intention of using:
- the charting - especially the lovely sparklines :)
- the grid - everyone needs one eventually!
- the overall framework stuff - especially as they use MVVM everywhere.
I will install the trial version soon and then come back with more feedback.