I don't think we need to argue. Alejandro's comment however raises an important issue: "what are Dia's competitors"?
I think actually Dia can live alongside online diagram editors such as
draw.io and formats such as XML/SVG have nothing to do with it.
The reason why I have used Dia in the past is that I could not find any other solution for the following requirements:
- be fully offline (
draw.io & co fail this - plus I'm not trusting them with any work-sensitive material!)
- is free, open source and is not controlled by a company (yEd fails this - also
OmniGraffle, Enterprise Architect, Visual Paradigm, etc)
- simple, does not require learning a new language (graphviz and any other text->UML tools fail this)
- lightweight, but still fairly rich in features (libreoffice draw fails the lightweight requirement)
-
offers a simple interface which is very easy to pick up (I tried
Inkscape, but for whatever reason I was never able to get working as
fast as I could in Dia)
- portable: works on Windows (my main requirement), *BSDs and maybe others.
I
might be heavily biased towards Dia, but I have searched for a better
alternative since I knew it wasn't being maintained and couldn't find
one. Hoping I have not missed anything?
I
think there will always be a need for an offline, open source, portable
lightweight diagram SW, so I think Dia still has a lot of life left in
it. Also it is nice to see that it is still top-search result for
anything like "diagram open software", "diagram software linux" even
after so many years.
Hope this helps,
Ed