When comparing Dia vs Creately, the Slant community recommends Dia for most people. In the question“What are the best flowchart / diagram softwares?” Dia is ranked 8th while Creately is ranked 12th.
Ranked in these QuestionsQuestion Ranking
Pro Free and open source
Pro Tons of icon sets
Has flowcharts, uml, chemical engineering, electronics, and dozens of other complete sets, built in.
Pro Custom gzipped XML format
Pro Professionally designed templates
The templates are well thought-out and actually helps you get started. Not like many other sites where the details are already filled in.
Pro SVG import and export
Creately supports SVG (Scalar Vector Graphics) import and export to make your diagrams more attractive. It allows you to re-size your diagram as much as you want without getting it messed up.
Pro Intuitive UI
Easy to use drag and drop interface and a contextual toolbar that shows you all the important actions when you select an object. The automatic creation and connecting of next object alone saves tons of time.
Pro Real time collaboration
You can invite anyone by their email addresses to collaborate with your diagram. You can see others' changes to the diagram real time with the Creately Online and Desktop app.
Pro Visio Import
Pro iSO and Android apps to view diagrams
You can't edit diagram using the apps but provides a nice clean interface to view, share and comment on them.
Dia has not been updated since 2009. It's already a very complete piece of software, but still sad.
Con UX is a joke
UX is not good enough. For example, to edit element text you must double-click it, then click text box, and then you can start typing text.