Rockwerx is a company based in central Massachusetts that designs, manufactures, and installs climbing walls. They offer consulting expertise as well as routesetting programs and routesetting training for climbing gym staff. They also offer mats, flooring and padding, climbing holds, and an auto belay system.

PlayCore, a playground designer and manufacturer, and the Natural Learning Initiative (NLI), a design and assistance program of the College of Design of North Carolina State University in Raleigh, North Carolina, joined together to create the program NatureGrounds: Putting Nature Into Play.

Jill Vialet co-founded the Museum of Children's Art and, more recently, founded Playworks, a recess and after school physical activity program. She has a conviction that "play is a precious commodity," she declares, "When recess is bad, it infects the entire school day."

Playskool, Inc. manufactures preschool and infant toys that engage young children in play and learning. What began as the idea of two retired women schoolteachers continues today with the belief that "Play is nature's classroom."

Snug Play manufactures large-scale, manipulative loose parts for play designed for indoor or outdoor play spaces. Snug Play offers nine play elements: the bump, cone, wave, wall, noodle, spider, pad, mound, and full loop. These tactile elements combine soft and rigid play surfaces that are durable and weather-resistant that can be easily linked together offering open-ended play.