TradingView - The best charting tool for crypto and stocks
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
eToro - The social investment network that connects traders from around the globe and enables them to share...
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Robinhood - Free stock trading service.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.