Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Olivia - Your new best friend built with an artificial neural network
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Digit - SMS bot that monitors your bank account & saves you money
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Spendee - See where your money goes