Based on our record, Phabricator should be more popular than Kissflow. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Kissflow is a well-rounded tool that bridges workflow & business process management in a single operating environment. This platform takes out the pain of work tracking by introducing tools and functions that simplify much of the work through automation. Source: about 3 years ago
My company has used Phabricator, which is an alternative to Azure Devops, for about 5 years. A few days ago they announced that the project won't be maintained anymore, so we are looking into alternatives. We have around 50 devs+product folks that use Phabricator at the moment. Source: about 3 years ago
You also mention Gitlab is close to what you would like - maybe Phabricator is even closer: https://phacility.com/phabricator/. Source: about 3 years ago
Https://phacility.com/phabricator/ I think checks most of those boxes, maybe all. Source: about 3 years ago
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Nintex - Cloud-based digital workflow management automation platform
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.