DevExpress have released a collection of free ASP.NET controls that you can use “without royalties or distribution costs”. The applications you create with these controls can be distributed royalty free and all the controls are are fully supported by both Visual Studio 2005 and Visual Studio 2008.
Some of the ones I think stand out as potentially being very useful are the:
TextEdit
ProgressBarControl
XtraTabControl
SplitterControl
ASPxCloudControl
For a full list, visit http://www.devexpress.com/Products/Free/WebRegistration60. You’ll need to register so they can send you your account details and instructions on how to download and use the controls.
I’ll be trying a few of these out over the next couple of weeks, so let us know if you’ve tried them and what your thoughts are on them.

Mark is primarily an ASP.NET developer and also has skills in SQL Server, HTML and CSS. He is based in the North East of England and has a 2 year old son named George. Mark is the founder of http://aspnetlibrary.com, has a blog at http://weblogs.asp.net/marksmith and is the director of http://mdssolutions.co.uk.