In brief
Tammy Everts
Find out why ANTS Performance Profiler is the ultimate .NET profiler in a new online adventure. Read it now.
Red Gate Software   sponsored 
Paul Kinlan
ValdikSS
Eric Lawrence
“You should treat your servers as cattle, not as pets.”
Chris Blackburn
Luciano Mammino
The New Stack
Atlassian Blogs
The New Stack
Ross Duggan
The folks at Stack Exchange (best known for Stack Overflow) have built a time series alerting framework in Go.
Stack Exchange
Quick reminders of four useful tools that can be used when working with SSL, diagnosing problems or inspecting packets.
CertSimple
Codebase offers fast reliable hosting for Git, HG SVN repos with project management built-in. 50% off first 3 months with code RUBYWEEKLY.
Codebase   sponsored 
Used for building TCP servers in this tutorial.
libmill.​org
Alexander Gugel
Mohamed Bassem