Yes. We require the license key since version 7.0.0. You can either use your purchased key or a "non-commercial-and-evaluation" license if your project is non-commercial.
The number of licenses should be equal to the number of developers working directly with Handsontable. Licenses are not assigned to a person but to each seat.
It depends on the license you have. The commercial license might be perpetual or subscription-based.
Yes, with a Handsontable license you can use and edit the source code and easily adjust it to your product.
A developer is any person in your company working directly with the Handsontable source code. This includes implementing, integrating, or changing the code.
You can buy a license using your credit card or PayPal account. To pay us via bank wire transfer, please contact our Sales Team.