About Threlmark

Threlmark is a local-first project and roadmap hub: one place that manages all your projects and runs a ranked, kanban-style roadmap for each. It stores everything as plain JSON on your own disk — no cloud, no accounts, no database — so any other tool you use can read a roadmap or write a suggestion straight back into it.

Why it exists

Most project tools assume a team, a server, and a subscription. Threlmark assumes a maker with many projects, a filesystem, and — increasingly — AI agents doing part of the work. The board hands work to agents as precise briefs, and a “done” report moves the card by itself. The disk layout is the contract; the app is just one client of it.

Who builds it

Threlmark is designed and built by Thorsten Meyer, an independent software maker and publisher based in Iffeldorf, Germany, as part of a family of local-first tools — including IdeaClyst, an idea engine that reads Threlmark roadmaps and proposes scored suggestions back into them.

Principles

• Local-first. Your data lives on your machine, in files you can read.
• Open on disk. Plain JSON under ~/.threlmark — inspect it, back it up, script it.
• Agent-native. Anything you can do in the UI, an agent can do through the API and MCP tools.
• Flow over status. WIP limits, aging work, forecasts — manage how work moves, not just where it sits.

Questions? See the manual, browse the source on GitHub, or get in touch.