This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Arcline
Open-source diagram canvas you and your agent edit together.
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.
Hey Product Hunt 👋 I built Arcline because diagrams and code keep drifting apart. Here you can sketch it, write it as code, or let your agent edit it — all on one local-first canvas. No account, no uploads, MIT licensed. Happy to answer anything!
I think this will be really helpful for the vibe coders to understand the architecture
Congrats on the launch, Mohit! Diagrams going out of date as the code changes is a real problem. Having the agent edit the same canvas over MCP, with each change as one undo step, is a really nice touch. Does it keep the diagram-as-code version and the hand-drawn layout in sync when you switch between them?
About Arcline on Product Hunt
“Open-source diagram canvas you and your agent edit together.”
Arcline was submitted on Product Hunt and earned 15 upvotes and 5 comments, placing #40 on the daily leaderboard. 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.
Arcline was featured in Open Source (69.1k followers) and GitHub (41.5k followers) on Product Hunt. Together, these topics include over 53k products, making this a competitive space to launch in.
Who hunted Arcline?
Arcline was hunted by Mohit Khushalani. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Arcline stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Mohit Khushalani
Hey Product Hunt 👋 I built Arcline because diagrams and code keep drifting apart. Here you can sketch it, write it as code, or let your agent edit it — all on one local-first canvas. No account, no uploads, MIT licensed. Happy to answer anything!