I’ve used Dia for years, great simple tool for diagramming & if I need something more I’ll switch to graphviz dot files
Inkscape works well for this.
Maybe mermaid fits your use case?
There’s kroki as well, which includes Mermaid, Excalidraw, GraphViz, PlantUML, etc.
See also Inkscape.
Doesn’t quite fit OPs want of self hosted, but still very good.
There is also Asymptote and tikz for more technical stuff.
You are aware that draw.io is itself open source and self-hostable: https://github.com/jgraph/drawio ?
“This project is not an open source project as a result.”
https://github.com/jgraph/drawio/blame/dev/LICENSE <-- that’s … a rather specific and recent change. Is there a story here ?
They added:
- None of the Work may be used in any form as part, or whole, of an integration, plugin or app that integrates with Atlassian’s Confluence or Jira products.
Weird because gliffy (or whatever it’s called) exists on confluence
Draw.io has a Docker container
I used to use one years ago called yEd graph editor. Supremely amazing. It is free to use, but I don’t think it’s open source.
By no means the best option, but the tikz latex package works and pandoc can handle the conversion to your preferred format. I would limit this to very simple diagrams.
D2lang is good
What kind of diagram are you going to make?
Unless I misunderstand your question, draw.io can be downloaded as a standalone Linux application and run locally.
Likewise, the Xfig package should he available in most Linux repos. It’s old, but good enough for a quick sketch.
edit: aha. My mistake. My eyes slid over ‘open source’ in the title*, and even still I hadn’t realized it was an Apache license.
* Whaaat, it was pre-coffee? Let the purest among us cast the first stone.
They’re looking for something open-source. Draw.io’s readme says:
License
The source code authored by us in this repo is licensed under a modified Apache v2 license. This project is not an open source project as a result.
I haven’t been through the license to see what its restrictions are, but there must be a reason they give this warning.
Of the changes made last week to the license, this one stands out:
- None of the Work may be used in any form as part, or whole, of an integration, plugin or app that integrates with Atlassian’s Confluence or Jira products.
That is a weird carve-out, so I’d guess the license revision (and technically the reason it’s no longer open source) somehow has to do with Atlassian or their plugin marketplace?
From another comment on this thread: https://github.com/jgraph/drawio/discussions/4623
draw .io is closed source.
Source available*
