What are some alternatives?
When comparing Spinnaker and Integromat, you can also consider the following products
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Microsoft Flow - Similar to IFTTT and Zapier you can create automated tasks based on APIs from various services.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.