`draw.io`
https://github.com/jgraph/drawio
https://app.diagrams.net/

Free but not open source. Nonetheless a very useful tool that does not have adds and seems like it will persist.


On 12/9/25 05:00, [email protected] wrote:
Date: Tue, 9 Dec 2025 11:13:04 +0100
From: joerg van den hoff<[email protected]>
To: Lenore Horner<[email protected]>,
        [email protected], macports-users
        <[email protected]>
Subject: Re: What is a good alternative to 'dia'?
Message-ID:<[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed

if willing to "script" the diagram, maybe groff/pic or its re-implementation 
"pikchr" plus
extensions for which someone made a wrapper so that it can work as a 
commandline tool

https://github.com/zenomt/pikchr-cmd?tab=readme-ov-file

might suffice?

On 09.12.25 10:41, Lenore Horner wrote:
GraphViz?

On Dec 8, 2025, at 20:36, bunk3m<[email protected]> wrote:

I'm intrigued by your question as I haven't found a good one that was open 
source.

I have used the sort of "freeware" yEdhttps://www.yworks.com/products/yed .  
It's quite sophisticated and has worked for nearly everything I needed to do.

Then there is Omnigraffle.  Unfortunately it's not open source nor inexpensive 
... but it is very good.

B.

Hi;
What is a good alternative to 'dia'?
Open source, works on MacOS arm64, or comes native with MacOS.
Just want something very simple (elementary flowcharting).
Thanks,
Ken Wolcott

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