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Show HN: Line9 – A Mermaid rendering engine with its own layout (line9.ai)
hankbond 4 hours ago [-]
I have a bunch of bad layouts so I'll give it a shot, but there's no way my org would pay 120 a year per seat for this. I don't think for any price it would get through procurement to be honest. Also we mostly render mermaid in confluence documents with a macro that renders it from the source in the document. Not sure how that would relate to this pricing/auth model.

Not trying to throw any shade or dissuade you from trying to earn a living, just providing feedback.

sbarre 5 hours ago [-]
FYI for any new or casual Mermaid users, it comes with a built-in alternate layout called `elk` that I find does a much cleaner job on complex flowcharts.

See docs here: https://mermaid.ai/open-source/config/layouts.html

ramoz 2 hours ago [-]
I'm trying some of the diagrams in elk and it seems to break the logical flow.

You can try it with Line9's first chart: https://mermaid.ai/live/edit#pako:eNpVVEtv2zAM_iuCTilgB1mbxq...

While it's nice and compact, it actually is rougher to grep.

CGamesPlay 3 hours ago [-]
This is super interesting, but apparently neither Obsidian nor Typora include support for it. I guess it's actually provided by an optional plugin.

https://mermaid.ai/live/edit#pako:eNplUlFPwjAQ_ivNPW9EkMHWB4...

WalterGR 5 hours ago [-]
Graph layout is a very interesting, very hard problem.

There's even a yearly competition - started in 1994 - whose results are announced at the yearly Symposium on Graph Drawing and Network Visualization.

It's not a subject I'm versed in, but can you talk more about your solution? Do you use a larger constraint solver or is it hand-coded?

--

Competition: https://mozart.diei.unipg.it/gdcontest/

The 34th International Symposium on Graph Drawing and Network Visualization, to be held in Ontario, Canada: https://graphdrawing.github.io/gd2026/

n.b. It's an independent conference, not under the auspices of e.g. IEEE or ACM.

nylonstrung 3 hours ago [-]
https://frankorz.com/merman/ Here's a pretty solid Rust reimplementation of Mermaid btw
msmagh 39 minutes ago [-]
iamcoder18 5 hours ago [-]
This solves my biggest gripe with Mermaid.

It's an amazing tool, but I wish it were open source.

nylonstrung 3 hours ago [-]
Is this not open source enough for your purposes?

https://github.com/mermaid-js/mermaid https://github.com/mermaid-js/mermaid-live-editor https://github.com/mermaid-js/mermaid-cli

OP's product is not open source btw

horacemorace 1 hours ago [-]
I’ve switched to D2 from mermaid after they removed ELK from the base. Dagre just doesn’t work for me. I wish there were better options.
doublerabbit 5 hours ago [-]
Well, it is. Mermaid.js

Just vibe code a user interface to it.

rdwrrr 29 minutes ago [-]
I regret learning mermaid. The ecosystem is absolutely terrible.
ryanackley 5 hours ago [-]
Looks cool. Price is pretty steep. Lucid chart is like $16/month.
5 hours ago [-]
MnemosyneOS 5 days ago [-]
[flagged]
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