Azure Web Sites Development Stacks - davidni/kudu GitHub Wiki

.NET

• CLR: 2.0, 4.0
  The default is CLR 4.0.
• Framework: up to 4.5
  The default is .NET Framework 4.5 (currently .NET 4.5.1).

Node.js

• 0.6.17
• 0.6.20
• 0.8.2
• 0.8.19
• 0.8.26
• 0.10.5
• 0.10.18
• 0.10.21
• 0.10.24
• 0.10.26
  The default is Node.js 0.10.5.

PHP

• 5.3
• 5.4
• 5.5
  The default is PHP 5.4.

Python

• 2.7
• 3.4

Java

• 1.7.0_51