EasyGear Maker allows you to generate involute spur gears ready for 3D printing (free STL export) and CAD design (STEP export). You can define module, number of teeth, pressure angle (α), profile shift (x), and backlash.
The tooth profile is generated as a true involute curve, making the gears suitable for real mechanical applications, not just visual models. Ideal for makers, engineers, and students.