During holiday sales (Black Friday, Christmas) or product anniversaries, Ample Sound has been known to release a "Rectangles Starter Kit" containing:
How does it stack up against other free synths? ample sound rectangles free
Here is a feature profile on the system in Ample Sound's free instruments. During holiday sales (Black Friday, Christmas) or product
Ample Sound does offer of their high-quality virtual instruments. These are not time-limited demos but perpetual free editions with reduced features. These are not time-limited demos but perpetual free
If you were actually looking for the Riffer system (the arpeggiator), that is a different feature, but in the free "Lite" version, functionality is sometimes limited compared to the full version. However, the Strummer/Rectangle system is fully functional in many of the Lite versions.
If you are already using like the Ample Guitar M Lite II or Ample Bass P Lite II , Rectangles is a must-have for low-latency practice and quick sound-design sessions. It transforms your computer into a high-quality virtual guitar or bass rig without the overhead of a full production suite.
You can find the free software versions on the Ample Sound Download Page .