The tool from TFA can export to Mermaid. I've used Mermaid to lay out some DAGs to visualize prerequisites & parallelizable tasks in large projects, and it certainly isn't as fast to use as Knotend seems it'd be.
TFA could be Two Factor Authentication, but it does not really fit and I prefer to use 2FA. Searching online yields Database Availability Group for DAG, but I prefer to ask.