Gstarsoft made technical drawings portable with a viewer for phones, browsers and PCs. Its next design problem was the advertising that got between people and their work.
A 40-year-old Mac CAD pioneer built one flexible modeler for buildings, gardens and stadium shows. Its real trick is keeping the idea alive from first sketch to final drawing - if a team can stomach the switch and the subscription.

After writing software for rovers, satellites, rocket engines and GPUs, the Aurorin founder is taking on a quieter engineering delay: the long pause between an idea and the object it becomes.
TestFit is a Dallas-based real estate feasibility platform that uses configurator and generative-design algorithms to turn a raw parcel into a buildable site plan, unit mix, parking layout, cost estimate and pro forma in minutes instead of weeks. Founded in 2016 by Clifton Harness and Ryan Griege, it serves developers, architects, contractors, civil engineers and municipalities evaluating multifamily, industrial, retail and mixed-use projects, and has raised $22M including a $20M Series A in 2022.