draw.io

Draw.io is an independent, open-source charting tool that was originally designed as an add-on for Confluence and Jira. It could be used both offline and online. We picked it since it is free and provides cost-effective solutions for teams who need Jira and Confluence hosting.

Draw.io has a straightforward drag-and-drop layout with a visual grid structure similar to that of many diagramming tools. It has a robust shape and template library, as well as connections with OneDrive, Dropbox, G Suite, and some other cloud services.

Additionally, it supports the import and export of files from Lucidchart, Gliffy, and Visio. While Draw.io is free-of-charge for most people and does not need an account to use, it does offer Confluence users a payment plan. Synchronization with Confluence Cloud is $5 per month for ten users after a 30-day free trial, whereas connection with Confluence Server is $10 per month for ten users. Meanwhile, interoperability with Confluence Data Center is available for as little as $6,000 per year ($500 monthly) for up to 500 users.

Highest ratings: 4.6 stars (from 558 reviews)

Access it here: https://drawio-app.com/