Web

• How to upload file in Node.js
• Create Echo Server in Node.js
• Near-Realtime Analytics with MongoDB, Node.js & SmoothieCharts
• Getting Started With Node.js and Visual Studio
• Partitioning MongoDB Data on the Fly

Other

• Making C# run on the GPU
• Debugging Internet Explorer - A Beginner’s Guide
• The top 10 new open source PRojects of the year
• UNIX and linux Interview questions answers

.NET

• Dictionary + Locking versus ConcurrentDictionary
• Threading in C#: 7 Things you should always remember about
• Parsing C#
• Compiling C# Code at Runtime

Mobile

• Objective-C: Cheat Sheet

java

• Simple Java