I just found Textgrago (https://textografo.com) which is perfect, but has a monthly cost. Only $4/pm, so not too bad if I can't find anything else. Source: over 1 year ago

Swimlanes is a simple implementation of the same concept. https://swimlanes.io/. - Source: Hacker News / 11 months ago

If you want to represent the different components and operations between them, I think you want something different than a flowchart. This type for example: https://swimlanes.io. Source: about 1 year ago

Several solid recommendations here, but I'd like to add https://swimlanes.io/. I use it several times a day. Sequence diagrams are great for this kind of thing ( in my experience ). Source: over 1 year ago

In this tutorial, we’ll use the following tools: Git, GitHub, GitHub Actions, Heroku, React, Draw.io, and Swimlanes.io. You can access the repository for this project on my GitHub profile. Let’s get started! - Source: dev.to / over 2 years ago

Ha-ha, just now I am sitting writing documentation and use UML for illustrations. No-one told me it's dead. I must say, CASE tools have always been missing even very basic elements of UML. I've learned UML in year 2000 by reading the full "The Unified Modeling Language User Guide" book by Booch, Rumbaugh and Jacobson. Every time when I tried to create a diagram during the years, after I envisioning how I would... - Source: Hacker News / about 3 years ago