[vladojsem]

We are makers of gleek.io diagram maker https://www.gleek.io/ and we use this tool internally as well.

When I create diagrams I prefer typing than drag-and-dropping and gleek.io is pretty fast.

You can check the diagram examples:

* Basic shapes https://app.gleek.io/diagrams/basic

* ERD crows foot https://app.gleek.io/diagrams/erdiagram

* UML class diagrams https://app.gleek.io/diagrams/class

* UML sequence diagrams https://app.gleek.io/diagrams/sequence

Recently we made also video tutorials, hopefully it helps when you are learning to work with a tool:

https://www.youtube.com/channel/UCMl_1_jjnhgPAsRBuJ0yzAA

Feel free to ask anything, happy to help!