I've been meaning to give this a go, specifically for Atari 8 bit stuff. I really like TBXL. The p-code compiler works pretty well for it. Same for the MMG and Monarch Atari BASIC p-code compilers. Fast Basic, by dmsc on AtariAge and Github, for the Atari 8 bit machines, is simply fantastic - given the self-imposed restraints Daniel gave himself (to fit inside of 8 kilobytes). For anyone out here that has an interest in Atari 8 bit machines and BASIC (or Algol, for that matter), please consider Advan BASIC. It includes a true compiler, has inbuilt PMG (Player Missile Graphics, Atari nomenclature for hardware sprites) commands, event driven sound and PMG stuff, etc. The author gave the community free reign of it several years back.
Back to ugbasic...I will give it a go this weekend. It appears to be a really cool tool! Even more so for the diversity of machines it works towards.