Flexible table components for .NET WinForms

SourceGrid:

http://www.devage.com/Wiki/ViewArticle.aspx?name=sourcegrid&version=0

quite mature

XPTable:

http://www.codeproject.com/cs/miscctrl/XPTable.asp
a bit underdeveloped, but interesting in that it tries to mimic JTable of Java/Swing. One could try J# Supplemental UI library instead, but J# Swing (sup ui lib) controls don’t interoperate with WinForms unfortunately (don’t know if anyone made a host control using reflection)