Tinderbox

Tinderbox is a note environment for projects that outlive the software you started them in: a dissertation, a multi-year investigation, a case file that keeps growing. You write notes, give them attributes, and let agents gather and re-sort them by rule while you carry on writing. The same notes can be read as a map, an outline, a timeline or a chart, and export templates can turn the whole structure into a finished document or a website.

It is not a casual purchase. $289 buys the current version and a year of upgrades. After that you either stay where you are, pay $98 when a release you actually want ships, or keep the $83-a-year updates plan running. Eastgate has shipped on that basis since 2002, which is the real argument for the price: the app you buy today will still open your files in a decade, without a card on file anywhere.

The learning curve is the other cost, and it is steep. Tinderbox assumes you will read the tutorials and think about how your material is structured. If your notes are somewhere to dump things and search later, Obsidian or Apple Notes already does that and you should not spend $289 to find it out. Buy this when you have hit the ceiling of an outliner and can name the wall you hit.