Legacy
Founder’s Engine — the file outlives the vendor
On Founder’s Engine — Streams → Experiments → Runway. Revenue streams feed your runway math.
In ten years, Baremetrics may be a redirect. Runway.com may be a Series-C acquihire. Your Notion workspace may be an export you never quite got around to downloading. The Founder's Engine file on your drive will still open, still work, still be yours.
The half-life of a SaaS tool
Track the founder-analytics category for a decade and you find a cemetery: Cushion, Cushion-again, LivePlan pivots, dashboards that shipped and died. Each closure was preceded by an email starting 'we're excited to share…' and ending in an export deadline.
The category churns because the business model demands it. A file cannot pivot. It just opens.
What 'own it' means at the file level
You have a single HTML file on your machine. It contains the app, the data, and the ability to render itself in any modern browser without a network. Nothing about that changes when a company folds — because nothing about that involves a company.
This is the same durability as a spreadsheet, with a shape designed for how founders think.
Handing it on
One day you sell the company, or hand it to a co-founder, or archive the year. A file passes. A SaaS account is a permission structure — you cannot fully give it away, only invite someone into it. The Engine is a document, not a service.
Ten-year durability checklist
- Runs on any browser Chromium-derived after ~2018.Zero exotic APIs; will run on your next laptop and the one after that.
- No server required.There is nothing to stop paying for, ever.
- Data is plain JSON.If browsers themselves change beyond recognition, your numbers are still readable text.
- Open in every sense.You can inspect the source of the file. No obfuscation, no phone-home.
Questions people ask
What if browsers change so much this stops working?
The file contains standard HTML, CSS, and JavaScript. If those break, the entire web breaks. You will have larger problems, and your data will still be readable JSON.
Will you keep improving it?
Yes — and reforging within your tier is free, forever. But you are never forced to update. The file you bought is a finished object.
What if Offline.Ltd goes away?
The file keeps working. That is the whole point. We are the workshop; you own the tool.
Software that outlives its vendor is not a feature. It is a design choice, made once, at the start.