Alfresco

Reference: 
Adding Features
Adding password reset feature to Alfresco Share login
A simple My Weather dashlet using Alfresco share remote API
Writing a Hello World Dashlet for Alfresco Share

Create a new page to AlfShare
Spring Surf Developer Tools - Reference DocumentationSpring Surf with an Alfresco backend
Create a Custom Page in Share
Extending Share 1 - Creating a Share extension project
Extending Share 2 - Adding a New Content button to Document Library
Extending Share 3 - Adding new pages to share

Alfresco wiki
Web Studio
Surf Platform - Developers Guide
Surf Platform - Freemarker Template and JavaScript API