Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
FollowUpThen - The simplest way to schedule an email reminder
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.