Web-Based 3D Print Software

I need a browser-run solution that lets my users prepare their own 3D files for printing without installing anything locally. The core workflow should feel as simple as a drag-and-drop: they upload an STL or OBJ, see it in an interactive viewport, make quick edits, then send it straight to my printer queue. For editing, I want the full range from basic moves to more creative tweaks: • Basic transformations – scale, rotate, and translate with numeric input or on-screen gizmos. • Advanced tools – light sculpting and texturing so customers can smooth areas, add or subtract material, and preview surface finishes. • Template driven customization – load a library of predefined parts (for example phone-case shells or name-plate blanks) and let users personalise dimensions, text, or small decorative elements. The first release only needs to run smoothly on Windows-based browsers (Chrome, Edge, Firefox). If you build with a cross-platform stack such as WebGL/Three.js on the front end and Node.js or Python on the back, future porting will be simpler, but Windows is the immediate requirement. Final deliverable: a deploy-ready web app with clear installation notes, source code, and a short user guide showing how to import a model, apply edits, and export the prepared file or push it to a REST endpoint for printing.