Draw.io

Draw.io is a free online diagram software that is created specifically for helping people plan, design, and share business diagrams. You can build simple diagrams to share with your team, put in larger networks to help communicate new designs, or even draw pretty great diagrams for all of your online followers to see

Draw.io Key Highlights

• It is very simple to use and also offers a large collection of shapes
• Allows you to import the diagrams made using other tools
• Create process flow diagrams, org charts, UML, flowcharts, ER diagrams, network diagrams and more.
• It provides a revision history support so that you can keep a track of all the changes made
• It is fully responsive and works on mobile devices as well
• It offers easy interface customization
• It is fully secure and does not send any data to external services and apps (Default setting are recommended)
• draw.io is a HTML5 application and can be run using a simple web browser.
• Diagrams made using draw.io can easily be embedded to other webpages using the embedded code
• Diagrams can be exported in large number of formats like PNG, JPEG, SGV, HTML, XML, VSDX etc.

Draw.io Use cases

Few cases of draw.io includes creating the diagrams for 

• BPMN
• UML
• ER
• Org charts
• Networks (AWS, Azure, Cisco, Citrix, GCP, IBM etc.)
• Mockups and Wireframes
• Floor plans
• Infographics
• Mind Maps

If you are looking for a free online diagram maker then draw.io is one of the best tools.