When comparing Diagrams.net vs Livegap charts, the Slant community recommends Diagrams.net for most people. In the question“What are the best diagram tools for Mac OS?” Diagrams.net is ranked 1st while Livegap charts is ranked 3rd.
Ranked in these QuestionsQuestion Ranking
Pro Completely free
Pro Rich functionality for a web-based application
Pro There is also a Desktop version
Pro Integrates with multiple cloud storage services
Draw.io offers saving files directly to services such as Google Drive, OneDrive or Dropbox along with saving to to computer.
Pro Good list of different output formats
Draw.io supports export for PNG, GIF, JPEG, PDF, SVG, HTML, and XML.
Pro Internet Explorer 6-8 and touch device support
Draw.io works with every browser (even IE 6) without plugins.
Pro Real-time collaboration
Tool to easily create beautiful chart from any data then save as image or animated HTML Charts
Pro Charts can be exported to multiple formats
Charts can be exported to images or HTML.
Pro Can be opened from the browser
The tool is online and can be used from a web browser, no application is needed.
Con Import from Visio .vsd is useless
Even simple diagrams get all scattered.
Con Behaves strangely for certain diagram types
For example the snapping function for arrows doesn't work properly for the sequence diagram template.