CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
NIM - GB64.COM is the home of The Gamebase Collection of C64 games.
Semaphore - Semaphore is a fully managed, high performance testing and deployment solution for your company. A Continuous Integration tool.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Heroku CI - Continuous Integration from Heroku
Rust - A safe, concurrent, practical language