Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Notopass - Share your accounts without giving username/password
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
SuperTokens - Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito