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Struppëflo
A thinking canvas that compiles to the structured AI prompt.
Structured outputs start from structured thoughts. Struppëflo is a thinking canvas that compiles itself into the brief a frontier model can actually finish in one pass. Drop your thoughts as cards. Group them into named zones. The layout becomes the prompt. No account. No lock-in. Bring your own key or run entirely in the browser. Local-first: boards live in your browser, your data never touches our servers. Free during launch. Open source (AGPL-3.0).
Hej 👋 I'm Justin, solo building this.
The pitch: frontier models are great at long tasks when given structure. They're bad at them when given soup. Struppëflo gives you the structure for free. You arrange thoughts spatially, and the canvas compiles to the prompt the model actually follows.
What's new vs Notion / ChatGPT / Tldraw / etc:
• Spatial → structured compiler. Nobody else does this. Same board, same prompt, every run.
• Local-first. Boards live in your browser. No account. No backend.
• BYOK or in-browser. Bring your own Anthropic / OpenAI / Google / MiniMax / Moonshot key or run a small local model in the browser, no key at all.
• Live X-Ray. See the literal prompt the model receives, with token breakdown per section. You can diff prompt changes from board changes.
• Five templates out of the gate. Launch Plan, PRD, Research Synthesis, Content Pipeline, Brain-Dump Triage.
• Open source (AGPL-3.0).
What I want feedback on:
• Does the spatial → structured flow feel useful, or too clever-by-half?
• Is "no hosted backend, no account" a feature or a deal-breaker for you?
• What template would unlock this tool for you?
In the comments all day. AMA.
About Struppëflo on Product Hunt
“A thinking canvas that compiles to the structured AI prompt.”
Struppëflo was submitted on Product Hunt and earned 7 upvotes and 7 comments, placing #90 on the daily leaderboard. Structured outputs start from structured thoughts. Struppëflo is a thinking canvas that compiles itself into the brief a frontier model can actually finish in one pass. Drop your thoughts as cards. Group them into named zones. The layout becomes the prompt. No account. No lock-in. Bring your own key or run entirely in the browser. Local-first: boards live in your browser, your data never touches our servers. Free during launch. Open source (AGPL-3.0).
On the analytics side, Struppëflo competes within Productivity, Artificial Intelligence and Tech — topics that collectively have 1.8M followers on Product Hunt. The dashboard above tracks how Struppëflo performed against the three products that launched closest to it on the same day.
Who hunted Struppëflo?
Struppëflo was hunted by Justin C.. 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.
For a complete overview of Struppëflo including community comment highlights and product details, visit the product overview.
Justin C.