SQL Server Performance Dashboard (SSPD) is a small open source web app that shows you performance & problems of one or more SQL Server instances and their databases in near real time. It uses the Dynamic Management Views (DMV) to gather useful data from the verbose output and combines them with utility stored procs in order to get meaningful, easy to understand information out of them. You can use it to quickly spot blocking queries, who is blocking who, expensive query that are consuming high CPU or disk, see if there’s unusual locks, very high disk activity and so on.
See a live demo: http://dashboard.omaralzabir.com/
You can read details about the tool from this CodeProject article: http://www.codeproject.com/Articles/799053/Web-based-real-time-SQL-Server-Performance-Dashboa
The binaries are here, which you can just extract into a IIS folder, put the connection strings in the web.config file and you are ready to roll:
Or you can get the source code from the GitHub project site: https://github.com/oazabir/SQLServerDashboard