VS2010 heavily emphasized "Test-First" development workflows. You can write code referencing a class or method that doesn't exist yet, and a small smart tag appears under the undefined term, allowing you to generate a stub class, method, or property automatically.
The debugging experience in VS2010 introduced features that saved developers countless hours.
One of the most notable "tools" was the IDE itself. Because the interface was rebuilt using WPF, it became highly extensible. visual studio 2010 tools
"Visual Studio 2010 didn't just give us new buttons. It gave us a new way to see our code鈥攂ackwards in time, across cores, and up through the architecture." 鈥� Anonymous Microsoft MVP, 2010
Schema Compare: A tool to identify and synchronize differences between two database schemas. VS2010 heavily emphasized "Test-First" development workflows
While Team Foundation Server (TFS) was the default source control, Git support in VS2010 was non-existent. AnkhSVN was the standard tool for developers using Subversion (SVN) repositories.
VS2010 allowed developers to store database schemas (tables, views, stored procedures) directly in source control. One of the most notable "tools" was the IDE itself
Multi-Monitor Support: For the first time, developers could easily tear off document tabs and move them to secondary screens.