help require for an editor for asp.net project

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C#

ASP.NET

hi i an doing an small project which requires and editor . can somebody suggest me an editor which can be use in asp.net page. please remember that editor should be able to be integrated within an content tag of an master page of asp.net.

there was link an editor withing code project itself i do not know the link but it was not possible to make its reference in tool box

please suggest me a good/ simple editor for it. and yes also suggest how to use it as an tool or make it reference in tool box

of which editior is cope project itself is using

thanks
anoop