OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.