ASP.NET Add-in for best practices analyzer : http://www.codeplex.com/Wiki/View.aspx?ProjectName=BPAEngine

Tool to show useful information about an assembly when right clicking on it  (Debug or release, Version, public token, etc.) : http://www.codeplex.com/AssemblyInformation

Patterns and Practices guidance explorer: http://www.codeplex.com/guidanceExplorer

Patterns and Practices SharePoint guidance:http://spg.codeplex.com/

Tool to visualize the project dependencies in a solution: http://www.codeplex.com/dependencyvisualizer

http://www.sharepointoverflow.com has been launched. It is a sort of stackoverflow site but just for SharePoint technologies

15 Essential Checks Before Launching Your Website  : http://www.smashingmagazine.com/2009/04/07/15-essential-checks-before-launching-your-website/

A Round-Up of Super Javascript and jQuery Plugins :  http://designreviver.com/tips/a-round-up-of-the-best-and-latest-javascript-and-jquery-plugins/

Patterns and Practices Developing SharePoint Applications Guidance : http://msdn.microsoft.com/en-us/library/dd203468.aspx

HTML Forms best practices: http://net.tutsplus.com/tutorials/html-css-techniques/20-html-forms-best-practices-for-beginners/

Overview of HTML 5: http://www.alistapart.com/articles/get-ready-for-html-5/

Top XHTML validation errors: http://designreviver.com/articles/top-validation-errors-when-using-xhtml/

25 Creative Web site Footers: http://designreviver.com/inspiration/25-creative-website-footers/

Learn 3 Excellent JavaScript Libraries at Once: http://net.tutsplus.com/tutorials/javascript-ajax/learn-3-excellent-javascript-libraries-at-once/

“Real World SharePoint 2007” book excerpt, Chapter titled: “Developing Publishing Sites the smart and structured way “:   http://technet.microsoft.com/en-gb/library/ee330880.aspx

Create an installation source that includes software updates

(Windows SharePoint Services 3.0): http://technet.microsoft.com/en-us/library/cc287882.aspx

(Office SharePoint Server 2007) : http://technet.microsoft.com/en-us/library/cc261890.aspx

13 Ways to Browser Test and Validate Your Work: http://net.tutsplus.com/articles/web-roundups/13-ways-to-browser-test-and-validate-your-work/

Creative designs for 404 pages: http://css-tricks.com/404-best-practices/

Creative designs for registration pages: http://designreviver.com/articles/40-eye-catching-registration-pages/

Interesting JQuery plugins: http://woork.blogspot.com/2009/07/10-interesting-lightweight-jquery.html

Microsoft recommends extending certain folder from antivirus scanning saying that they might cause unexpected behavior

For SQL Exclusions

http://support.microsoft.com/kb/309422

For MOSS Exclusions

http://support.microsoft.com/kb/952167

http://blogs.msdn.com/wpfsdk/archive/2009/07/10/silverlight-3-and-expression-3-launch-today.aspx

For a list of what’s new: check: http://weblogs.asp.net/scottgu/archive/2009/07/10/silverlight-3-released.aspx

Locking down Office SharePoint Server sites: http://technet.microsoft.com/en-us/library/ee191479.aspx

How to reuse a web page by converting into an ASP.NET User Control? : http://blogs.msdn.com/webdevelopertips/archive/2009/07/09/tip-87-did-you-know-how-to-reuse-a-web-page-by-converting-into-an-asp-net-user-control.aspx

50+ Tools To Make You a More Efficient & Organized Designer: http://designreviver.com/articles/50-tools-to-make-you-a-better-faster-more-collective-designer/

Web Form Validation: Best Practices and Tutorials: http://www.smashingmagazine.com/2009/07/07/web-form-validation-best-practices-and-tutorials/

100 Outstanding Login Forms: http://designreviver.com/inspiration/100-sites-with-outstanding-login-forms/

Regionerate: a small add-in that will help you manage the code order and layout: http://visualstudiogallery.msdn.microsoft.com/en-us/800978aa-2aac-4440-8bdf-6d1a76a5c23c

StyleCop: Tool the check code style and consistency: http://code.msdn.microsoft.com/sourceanalysis