multicache: Go cache library with support for multiple keys and various replacement algorithms https://github.com/josephlewis42/multicache ᔥ
CSLA.NET: Microsoft .NET Development middleware framework that aids in building and maintaining applications http://www.cslanet.com/
Hamster: Immutable, Thread-Safe Collection classes for Ruby ↬ https://github.com/hamstergem/hamster ᔥ
Contracts for Ruby: Code Contracts (Assertions) in Ruby https://github.com/egonSchiele/contracts.ruby ᔥ Tutorial here: http://egonschiele.github.io/contracts.ruby/
minitest: Ruby testing framework that includes TDD, BDD, mocking, and benchmarking https://github.com/seattlerb/minitest ᔥ
Legacy Application Strangulation: Case Studies http://paulhammant.com/2013/07/14/legacy-application-strangulation-case-studies/ ᔥ