OpenJML is a program verification tool for Java programs that allows you to check the specifications of programs annotated in the Java Modeling Language.
While Joint Push Pull by Fredo6 was free for over a decade, it transitioned to a paid extension in early 2022. You can still try it for free via a 30-day trial, but a perpetual license now costs roughly $12–$15. How to Download and Install
For students, hobbyists, and users of SketchUp 2017 or older, the Joint Push Pull Sketchup plugin free download (Legacy version 2.0b) is a game-changer. It unlocks 80% of the power of the paid version and removes the biggest limitation of SketchUp's native toolset. Joint Push Pull Sketchup Plugin Free Download
Window > Extension Warehouse.Classic Version: An older "Classic" version (v2.2a) exists and has historically been free, but it may not be compatible with newer versions of SketchUp (2024+). Essential Dependencies While Joint Push Pull by Fredo6 was free
The plugin is hosted on the Sketchucation Extension Store, which is the official and safest repository for Fredo6's work. Open SketchUp
Curved Surface Support: Extrude smooth, curved geometry without breaking the mesh.
Benefits:
The Joint Push Pull plugin is available for free download from the SketchUp Extension Warehouse or other reputable sources. Simply search for the plugin name, click on the download link, and follow the installation instructions.