If you need a permanent free tool rather than a trial, Wilcom and others provide official free software:
You can access a full-featured version of through their official trial.
Wilcom e4.5 is a high-end digitizing suite known for several "full feature" capabilities:
: Includes specialized fills like Maze Fill for intricate, non-overlapping designs and the Hand Stitch Effect for an organic look.
: 14 days of unrestricted access to design, digitize, and experiment with the software.