Apart from PHP and Go which happen to be where my strength lies, i also have a passing knowledge of Ruby.
A caching library for Golang with support for redis, filesystem, memcached and an inmemory backend
A payment library for Paystack and Amplifypay written in PHP
An HTTP ratelimiter for Golang.
Golang utilities for working with files
This is a companion library to Gbowo. And it contains plugins for Gbowo's Paystack adapter.