[SharePoint 2010 - Developpement & Administration] Getting started with Sharepoint 2010 : useful Tools

In order to help you to build and debug your sharepoint, you’ll need some tools

Sharepoint Manager 2010 (object model explorer)

A great tool permitting you to explore your Sharepoint Websites, content types, fields, library :
http://spm.codeplex.com/
There is a 2007 version available

Caml Builder

Generate CAML Query in a simply way
http://www.u2u.net/res/Tools/CamlQueryBuilder.aspx

[EDIT 04/02/2012]

 View Sharepoint Log in a better way :

Those log viewers enable the filtering, sorting function, really useful to search an error from its correlation ID

Uls Viewer

See logs of sharepoint in a better way. It also permits you to only display the errors, and search correlation id link to the error message
http://archive.msdn.microsoft.com/ULSViewer

and even better

SharePoint LogViewer

Same functions as Uls viewer, but the presentation is much better

http://sharepointlogviewer.codeplex.com/