Give it the parts you need and the stock you have. It returns the cutting plan that wastes the least material, accounting for kerf, end trim and minimum useful offcut.
1D cutting — bars, profiles, extrusion, pipe and timber — is live and free to try, no account required. 2D sheet nesting is in development and not usable yet; see the 2D roadmap for what's planned. That's the whole list — the site doesn't claim more than these two.
Getting a real cutting list in, reading the plan back out, and turning it into something a person at a saw can follow is usually where a tool stops being usable — so that's what this was built around, not the solver alone.
Pasting a list from a spreadsheet, saying what stock is on hand and in what order to use it, setting kerf and trim once per machine, seeing plainly what couldn't be placed, and exporting something the office and the shop floor can both use — that's the product, as much as the optimization is.
It's one engine, built and tested by one person — a column-generation solver, not a first-fit heuristic, but still one engine, not a platform of them. It keeps changing based on what the people using it ask for.
Free, no licence, no seat count, no account needed to run a list. If it saves you material and you want to put something towards the work, there's a Buy Me a Coffee link in the footer — entirely optional, nothing sits behind it.