I was wondering if it would be of any help to give some money to contribute to the development of this program. I think it is important to give a little for all the hard work that is put into making this.
It should be noted that open source software is not always free, as in zero-cost, to download and use, because people who develop it require some sort of payment to keep the ball rolling. There are some programs that self-claim to be “free”, like Ardour for example, but expect you to pay for the pre-made program to download. A biting irony, ain’t it. It’s also tricking you with semantics. Well, there’s always going to be paradoxes in life. Luckily, the software is only about $45 or less for a single payment of the pre-made program download, which isn’t terribly expensive.
Anyway, as a fan of this software and a filmmaker, I think it would be big-hearted of me to give, say, $5 for the development of Pencil 2D and to give a little extra payment to the development team.