AlterG

AlterG, founded in 2005 and recently merged into Lifeward (formerly ReWalk Robotics), is a global leader in unweighting technology for rehabilitation and athletic performance. Its core NASA-inspired technology, the Anti-Gravity Treadmill™, uses calibrated Differential Air Pressure to allow for pain-free movement and gait retraining, serving millions of patients and athletes. The company offers a product portfolio (NEO, NEO+, PRO) tailored to different clinical and performance needs and provides extensive clinical protocols for a wide range of conditions from orthopedic injuries to neurological disorders.

Patented Differential Air Pressure (DAP) technology that creates a calibrated air chamber to precisely unweight users by up to 80% of body weight, enabling natural gait rehabilitation and performance training with integrated real-time analytics.

Total raised: $32.5M

Main competitors include hydrotherapy pools and overhead harness systems, which lack the precision and natural gait mechanics of AlterG's DAP technology. Within its niche of lower-body positive pressure treadmills, AlterG is the dominant commercial player, differentiated by its patented technology, robust analytics, extensive clinical protocols, and strong brand reputation in elite sports.