My name is Theodoros Chatzigiannakis, I'm an Electrical and Computer Engineering student from Greece and I publish small free C# libraries on my GitHub.
TinyReflectiveToolkit
A library that offers sweet things like runtime contracts (.NET interfaces that can be applied to any type at runtime, with more constraints than what normal interfaces can express), eager assembly loading and extension methods for easier reflection.
EnumerableExtensions
A collection of useful extension methods for IEnumerable<T>, mostly following the spirit of existing LINQ extension methods with delegates/lambdas and lazy evaluation.