List of free workflow stuff for developerππ½
If you're looking for all programming tools around workflow (not just free). Check this page List of workflow Programming Tools

Code Climate - Velocity
Velocity synthesizes the data from your repos to give you full visibility and empowers your team for continuous delivery.
Tag: workflow, remote, insight
Free for teams of up to 20 Repositories 50 Historical Data 3 Months GitHub, Bitbucket & GitLab integration
YepCode
All-in-one platform to connect APIs and services in a serverless environment. It brings all the agility and benefits of NoCode tools, but with all the power of use programming languages
Tag: Saas, PaaS, serverless, API, workflow, devtools, automation, code, productivity, JavaScript
Credit: 1.000 yeps/month Processes: up to 5 by team Integrations: up to 3 by team Time by execution: 5 minutes
n8n.io
Free and open self hostable workflow automation tool. n8n (pronounced n-eight-n) helps you to interconnect every app with an API in the world with each other to share and manipulate its data without a single line of code
Tag: workflow
Free for self-hosted