CRM 2011 JavaScript Model Generator

http://crmjsmodelgenerator.codeplex.com/

CRM 2011 Lookup Preview

http://crm2011lookuppreview.codeplex.com/

Sales Product Editor

http://www.dynamicsexchange.com/SPE.aspx

Silverlight CRM Attachment Image

http://crmattachmentimage.codeplex.com/

Also check out the thread at http://mscrmblogger.com/2011/05/10/crm-attachment-image-for-crm-2011-entities/

CRM Rules! Javascript Generator

http://www.vscrm.com/CRMRules.html

CoreMotives Surveys for Dynamics CRM

http://coremotives.com/features/surveys/

EPiServer Connect for Microsoft Dynamics CRM

http://www.episerver.com/en/Products/EPiServer-Connect/For-Microsoft-Dynamics/

Sitecore Microsoft Dynamics CRM integration

http://www.sitecore.net/Products/Sitecore-CMS/Integration-Abilities.aspx

TaggingField for Microsoft Dynamics CRM

http://taggingfield.codeplex.com/

CRM Data Validation

http://crmaccelerators.net/products/crm-data-validation-2/

CRM Innovation Web2CRM

http://www.crminnovation.com/web2crm.asp

MTC Email-to-lead

http://www.mtccrm.com/ETL.htm

CoreMotives Web Form Capture

http://www.coremotives.com/products_webform_capture.htm