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Arcline

Arcline

Open-source diagram canvas you and your agent edit together.

Product HuntOpen SourceLaunched Nov 5, 202615#39 of the day
producthunt.comProduct Hunt listing

About Arcline

Arcline is a friendly, local-first diagram canvas for architecture and flow diagrams. Draw by hand, write diagrams as code with Mermaid, D2, Structurizr or OpenFlow DSL, or hand the canvas to your AI agent over MCP. Claude Code, Cursor, VS Code and Codex can read and edit the same document — every change is one undo step. No account, no cloud. Free and open source.

How Arcline did at launch

Arcline launched on Product Hunt on Nov 5, 2026, one of 40 launches Junior recorded that day. It finished #39 of the day with 15 upvotes, against a median of 73 for the day.

Among the 8 Open Source launches in November 2026, it got more upvotes than 13% of them (the median was 81).

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The person behind Arcline

Arcline's team page →

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