Repetier-Host

Forma3D is a touch-first 3D mesh editor and 3D printing prep app for iPhone and iPad — a mobile alternative to Blender, Meshmixer, and Tinkercad that runs fully offline. Edit vertices, edges, and faces with extrude, inset, bevel, mirror, revolve, remesh, and Manifold CSG booleans. Sculpt with 11 Metal-accelerated brushes, multiresolution, and Apple Pencil pressure. Sketch 2D strokes into 3D solids; generate bolts, gears, 3D text, and lithophanes from photos. Paint faces for multi-filament printing and export color 3MF with embedded slicer profiles for Bambu Lab and Creality — filaments auto-assign in Bambu Studio. Scan objects via LiDAR + Object Capture, repair non-manifold meshes, split parts with alignment joints, preview overhangs. Import/export STL, 3MF, USDZ. 43 hotkeys, built-in tutorials, 16 languages. Free with trial; subscription or lifetime.

Orca Slicer is a free, open source 3D printing slicer for FFF and FDM 3D printers, designed to turn 3D models into precise G-code with advanced calibration tools, intelligent print controls, and a user-friendly workflow. It gives makers a complete environment for preparing, tuning, previewing, and optimizing prints, with support for Windows, macOS, and Linux. Orca Slicer includes a comprehensive calibration suite for temperature towers, flow rate tuning, pressure advance, retraction tests, tolerance testing, maximum flow rate testing, and vertical fine artifact calibration, helping users fine-tune printers and filaments for better print quality. The slicer also offers precise wall and seam control, including outer wall spacing adjustments and scarf seams to improve accuracy and surface finish. It includes features for sandwich mode, polyholes, multi-plate workflows, printer setup, slicing settings, and detailed model preparation, giving users more control over how parts are printed.