Jenkins is a continuous integration server written in Java. Jenkins is an open source automation server. You can install it on your machine easily. Jenkins can be installed on Windows, macOS, and Linux machines. Jenkins is easily configurable and has many plugins to support continuous integration and deployment. If you have experience of using containers, you can use Docker to install Jenkins using Docker images from the registry.
Using continuous integration, you can easily back-track where things have gone wrong in the code. If you don't follow continuous integration, it will be more difficult and expensive to detect errors in the code at the production stage.
The following is a list of CI tools: