2Gearly

2Gearly is an open-source software platform dedicated to modeling, simulating, and sharing designs of two-gear mechanical systems. It centers on two-gear couplings, spur and bevel configurations, and aims to make the theory and practice of gearing more accessible for education, hobbyists, and engineers. The platform provides a parametric gear builder, a lightweight simulator to estimate transmission ratios, backlash, and efficiency, and facilities for producing production-ready drawings from gear models.

2Gearly was initiated in 2019 by a group of mechanical engineers and educators seeking to demystify gearing concepts. The first public release appeared in 2020, with iterative updates adding scripting support, expanded gear types, and enhanced export options. The project is maintained by a volunteer community and hosted on a public code repository.

Key features include a parametric gear designer, both static and dynamic simulations, and real-time visualization of contact and rotation. It supports import and export of common CAD formats such as STEP, STL, and SVG, and offers a Python API for automation and custom analysis. The codebase emphasizes modularity and cross-platform compatibility.

2Gearly is released under an open-source license and welcomes community contributions, educational institutions, and makerspaces. Documentation and tutorials are maintained in its repository and online wiki.