Factor is cool, but it has some differences that may trip an experienced user. But for a first time Forth user, the extra frameworks/libraries may be a help.

Factor is cool, but it has some differences that may trip an experienced user. But for a first time Forth user, the extra frameworks/libraries may be a help. As pointed out below, FIG Forth has a great deal of support. All my interactions using Forth have been on underpowered systems pounding on the bare metal. So lots of the words created supported that environment. Math words and geometry words came from FIG Forth.