A completely free, open-source 3D parametric modeler. It has community-driven sheet metal workbenches.
While there is no "free" version of available for public download , TRUMPF provides a structured path for customers to access and update the software. As high-end industrial software, a single license of TruTops Boost Core (including one machine package and a 12-month service contract) can cost around $20,000 USD . Accessing TruTops Boost trutops boost software free download link