The current release is meshmixer07. Download it from the links below.

Currently meshmixer07 is available for Microsoft Windows and Apple Mac OS X. If you have problems, please post in the forums.

Windows
(tested on Win7 x64 and XP SP3)

[meshmixer07 Win 32-bit] (Latest: January 17, 2012)
[meshmixer07 Win 64-bit] (Latest: January 17, 2012)

Mac OSX
(tested on Lion 10.7, should also work on Snow Leopard 10.6)

[meshmixer07 OSX 64-bit] (Latest: January 17, 2012)



Release History

[January 17, 2012] (meshmixer07 update 2)

- Fixed broken PLY import, OBJ export
- Transform tool now has 3-axis manipulator
- Extrude/Extract now have x/y/z axis direction options
- new Remesh tool for refinining and reducing areas (beta)
- new Join tool that automates ZipperBrush/Weld workflow (beta)
- Selection brush now has crease-angle threshold
- new hotbox (hold spacebar)
- view-axis snapping (in hotbox)
- visual camera controls (drag on icons in hotbox)
- fit-to-view on object or selection (in hotbox)
- custom background color (in hotbox)
- many other bugfixes/improvements

[December 22, 2011] (meshmixer07 update)

- Restored main Drag-and-Drop functionality from meshmixer06
- Mac OSX build available for Lion and Snow Leopard
- Convert to Part now works with selections
- vastly improved rendering speed (millions of triangles!)
- improved brush performance
- many bugs fixed

[October 26, 2011] (meshmixer07)

- New Transform Faces tool (under the Deform menu)
- Extrude tool applied to an entire open mesh now produces a Shell
- New Extract tool for creating an offset copy of selected region
- New Reduce tool for reducing triangle count, with Adaptive mode.
- Improved Erase-and-Fill tool
- New SurfaceBrush tool [details]
- Custom stamp textures for SurfaceBrush (right-click on stamp bar to import your own)
- Stamp texture Align-to-stroke toggle and Spacing control
- SurfaceBrush Draw3 mode (like a Clay brush) and DrawMax mode (like a Layer brush)
- SymSnap toggle for VolumeBrush that snaps brush position to surface during symmetry
- Volumetric toggle for VolumeBrush that limits brush to connected regions
- Move mode for VolumeBrush that doesn't modify mesh
- Vertex Color Painting brush modes [details]
- Blur/Smooth Paint brush mode for SurfaceBrush.
- Restore-Defaults for brush settings (click on the properties bar headers)
- Custom Materials (right click on the materials bar to import your own)
- Support for PLY import/export with Vertex Colors
- Option to Append imported meshes to current scene
- Import Plane to create initial default plane mesh
- Selections are now preserved after most operations
- Hotkeys have been redesigned [list]
- forum threads with more info: [1] [2] [3] [4] [5] [6]

[May 16, 2011] (meshmixer05)

- Reduce & Refine brushes for triangle management
- AdaptiveReduce brush for preserving detail when reducing
- ZipperEdge brush for pulling open boundaries toward eachother
- WeldBoundaries tool for joining nearby boundary edges
- Extrusion tool for extruding areas of faces
- SmoothBoundary tool for smoothing edge loops
- Bridge/Handle tool for creating mesh tubes between areas
- Open, Save, SaveAs for fast binary .mix file form
- 60-second AutoSave for crash recovery
- reorganized ActionBar menus
- fix for OpenGL shader compiler crashes
- ALT+CTRL+LMB to zoom, ALT+SHIFT+LMB to pan (for pens)
- [ and ] control brush size (previous/next view moved to ( and ) )
- free rotate option (under View/Config menu)
- brush rendering improved (symmetry line, stamp darkness)
- Symmetry option for Selection brush
- Selection brush now restricted to front-faces

[April 16, 2011] (meshmixer04 update)

- improved fallbacks for OpenGL failures/driver limitations
- added Basic Rendering mode
- added Log File Generation to aid in troubleshooting
- capped undo/redo memory usage

[April 12, 2011] (meshmixer04 update)

- fixed catastrophic file-export that was corrupting OBJ meshes
- fixed rendering glitch with selection hilight

[April 7, 2011] (meshmixer04 release)

- Volume Brushes with dynamic meshing refinement (Drag, Draw1/2, ShrinkSmooth, BubbleSmooth, RobustSmooth, Flatten, Inflate, Pinch, Spikes)
- improved rendering
- new color schemes
- crash recovery

[March 7, 2011] (meshmixer03 release)

- complete interface rewrite
- 64-bit and (beta) OSX versions
- full Undo/Redo support
- new Deform tool for push/pull surface editing
- new Smooth Brush tool for local mesh smoothing
- Selection tool now defaults to a Brush Mode
- Better large model support (can work with millions of triangles)
- Publish to Shapeways dialog
- in-app feedback and bug report submission (requires email)
- many performance improvements and bug fixes