Free browser base UML modelling tool

https://www.draw.io/

How many kind of UML diagrams in total?

Class Diagram
Component Diagram
Deployment Diagram
Object Diagram
Package Diagram
Profile Diagram
Composite Structure Diagram
Use Case Diagram
Activity Diagram
State Machine Diagram
Sequence Diagram
Communication Diagram
Interaction Overview Diagram
Timing Diagram

http://creately.com/blog/diagrams/uml-diagram-types-examples

How to install SQL Server management studio only?

On the download page:
http://www.microsoft.com/en-us/download/details.aspx?id=29062

Select the file just for SQL Server management studio installation:
ENU\x64\SQLManagementStudio_x64_ENU.exe

How to get list of SQL Server instances on local machine?

In command line prompt (Run as admin):
reg query "HKLM\Software\Microsoft\Microsoft SQL Server\Instance Names\SQL"

How to call a WCF / ASMX web service from PHP

http://www.sbp-romania.com/Blog/2014/11/05/how-to-call-a-wcf-asmx-web-service-from-php.aspx