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Download Silo and Milo
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System Requirements:
  • Windows 10 or newer 64-bit
  • MacOS 12 or newer, Intel or M1
  • Systems vary quite a bit, be sure to download the trial and make sure it runs on your system
Looking for an older version or don't match the system requirements? Visit the full Downloads Page to find what you are looking for.
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Complete Feature List:
Silo and Milo
Silo is a lightweight and lightning-fast 3D polygonal modeler and UV mapper, offering a deep, industry-grade toolset and easy-to-master workflow at an insanely affordable price. Milo is a stunning new breed of renderer and VR viewer, running entirely in real-time using the industry-leading Unreal Engine for gorgeous, high-quality lighting, materials, and shadows.

Jump to the Release Notes.

Stay up to date via our Updates Newsletter and download the latest version here.

Read our Dev Blog to see all of our updates and posts.

Feature List - Silo
(*as of Silo 2021—see release notes for most recently-added features)
Core Features
  • Powerful polygonal modeling with advanced tools
  • Fast subdivision surfaces with creased edge support
  • Lightweight, instant-open, standalone software
  • Focused purely on modeling for a greatly simplified workflow
  • 100% customizable keyboard, mouse, and interface to mimic any workflow
  • 100% customizable on-screen interface, including creating your own buttons and graphics
  • Equal support for a box modeling or strip modeling approach
  • Brush-based displacement painting on a mesh or subdivision surface
  • Topology brush for drawing new topology over a reference object
  • Powerful UV unwrapping tools including LSCM support
  • Smoothing groups/hard edges with smooth shading
  • Live texture updating speeds up your workflow significantly for creating and modifying textures
  • Support for generating 3D text
  • Help/Support:
    • Context-based in-app help
    • Free Online Tutorials
    • Online User Manual
    • Online Modeling Wiki
  • Supported file formats:
    • Import/Export: .sia, .sib, .obj, .3ds, .dxf, .fac, .dae, and .fbx.
    • Export-only: .stl, .pov, and .rib
Creating Geometry
  • Basic Primitives:
    • Cube (Can specify: height, width, depth, width/depth/height sections)
    • Cylinder (Can specify: spokes, radius, height, sections, height sections)
    • Sphere (Can specify: radius, sections, height sections)
    • Cone (Can specify: top radius, bottom radius, height, sections, height sections)
    • Torus (Can specify: inner radius, outer radius, radial sections, circumference sections)
    • Grid (Can specify: width, depth, height, width/depth/height sections)
    • Circle (Can specify: fill, spokes, radius, sections)
    • Arc (Can specify: radius, inner radius, height, degrees, sections)
  • Custom Primitives:
    • Ships with: Base Bust, Base Man with Feet, Base Man with Shoes, Base Woman With Feet, Base Woman with Shoes, Subdivided Cube
  • Lathe Object (Can specify: end caps, sections, degrees, merge tolerance, axis)
  • Extrusion Object (Can specify: height, sections, axis)
  • Path Extrusion Object (Can specify: end caps, scale, rotation)
  • Edge Tool
  • Polygon Tool
  • Surface Tool
  • Topology Tool
  • Text Generator (Can specify: text, resolution, scale height, extrude depth, font, extrude/tesselate)
  • Array
  • Duplicate
  • Combine Objects
  • Instance
  • De-Instantiate Instance
Modifying/Adjusting Geometry
  • Append Polygon
  • Append Edges
  • Bevel
  • Boolean Subtract/Combine/Intersect
  • Break
  • Bridge
  • Cut
  • Extrude
  • Fill Hole
  • Flatten
  • Inset Scale
  • Local Move
  • Local Scale
  • Merge
  • Mirroring:
    • Mirror Geometry
    • Instance Mirror Toggle
    • Calculate Symmetry
    • Symmetry Mode Toggle
    • Restore Symmetry
  • Orient
  • Paint Displacement
  • Shell
  • Slide
  • Smooth
  • Spin Edge
  • Split Loop
  • Triangulate
  • Unify Normals
  • Reverse Normals
  • Subdivide
  • Unsubdivide
  • Toggle Current Subdivision
  • Clear Higher Subdivision
  • Refine Control Mesh
  • Crease Edges
  • Uncrease Edges
  • Toggle Edge Crease
Selection Tools
  • Group Selection
  • Select Affected Groups
  • Select Next Group
  • Selection Mode (Vertex, Edge, Face, Object, Multi)
  • Convert Selection to Vertices/Edges/Faces
  • Manipulator Tool (Move, Scale, Rotate, Universal, Snap, None)
  • Snapping (Component, Surface, Grid, None)
  • Selection Style (Paint, Area, Lasso)
  • Soft Selection (Can specify: Surface/Spherical, Radius, Falloff)
  • Select All
  • Deselect
  • Deselect Inactive
  • Invert Selection
  • Expand Selection
  • Grow Selection
  • Shrink Selection
  • Select Path
  • Select Loop
  • Select Ring
  • Select Special Geometry
    • Faces with sides =, !=, <, >
    • Vertices with edges =, !=, <, >
    • Edges with faces =, !=, <, >
  • Select By...
    • Faces with same material
    • Creased Edges
    • UV Seams
  • Manipulator Edit Mode
  • Recenter Object Axis
  • Set Object Axis
  • Orient Selection to World
  • Orient Manipulator (Normal Vector, Object, World)
  • Auto-Orient Manipulator (Standard, Normal Vector, Object, World, Auto Orienting Off, Enable Repositioning)
  • Material Editor
  • Recreate UVs
    • Using XYZ Coords
    • Per Face
    • Using Planar Regions
    • Using Spherical Projection
    • Using Cylindrical Projection
    • Using Cubic Projection
    • Using LSCM Unwrapping
    • Using Neighbors
  • Unwrap UVs using LSCM
  • Live UV Unwrapping
  • Mark/Unmark UV Seams (+ Toggle)
  • Pin/Unpin UV Vertices (+ Toggle)
  • Move and Sew
  • Mirror UVs
  • Nudge UVs (U+/-, V+/-, Rotation +/-)
  • Flip UVs
  • Arrange UVs in Bounds
  • Scale UVs to Bounds
  • Scale UVs Proportionally
  • Export UVs to Image
  • Generate Normal Map
  • Generate Displacement Map
  • Add Light (Can specify: directional/point/spot, diffuse/ambient/specular color, constant/linear/quadratic falloff, spot cutoff/exponent, lock lights to camera, custom lights)
  • Use Scene Lights
  • Lock Scene Lighting to Camera
  • Make Scene Lights Default
  • Object Display Modes:
    • Wireframe Mode
    • Flat Shade Mode
    • Smooth Shade Mode
    • Fast Shade Mode
    • Ghosted Shade Mode
    • Crease/Uncrease Edges (+ Toggle)
    • Show/Hide Wireframe
    • Show/Hide Textures
    • Show/Hide UV Seams
    • Show/Hide Normals
  • Frame Selection
  • Focus Selection
  • Hide Selection
  • Hide Unselected
  • Show All
  • Unselected to Wireframe
  • Unselected to Ghost Shading
  • Viewport Layout Options:
    • Single View Layout
    • Horizontal Split Layout
    • Vertical Split Layout
    • 3-View Layout (Right)
    • 3-View Layout (Left)
    • 4-View Layout
  • Viewport Camera Options:
    • Free Perspective View
    • Free Orthographic View
    • Top/Front/Left/Right/Back/Bottom Orthographic Views
    • UV 2D View
    • UV 3D View
  • Walkthrough Mode
  • Show Work Grids toggle
  • Show Manipulator toggle
  • Show Viewport Images toggle
  • Show Lights toggle
  • Show UV Seams toggle
  • Show Buttons toggle
  • Next Button Page
  • Set/Select/Delete Viewport image
  • Render External (Can specify: file format [sib/sia/obj/dxf/3ds/fac/rib/stl/pov], render command, command line options)
  • Scene Editor
  • Scene Info (scene: objects, faces, iso faces, tris; selection objects, faces, edges, vertices, tris; faces: 3-sided, 4-sided, >4-sided)
  • Object Properties (name, shading, subdivision level, symmetry, instance mirror, show/hide wire, show/hide normals, show/hide textures, hidden, locked)
  • Numerical Editor
    • X,Y,Z Position
    • X,Y,Z Rotation
    • X,Y,Z Scale
    • X,Y,Z Size
    • Distance
    • Angle
    • Coordinates World/Manipulator
  • Material Editor
    • Name
    • Diffuse
    • Ambient
    • Specular
    • Emissive
    • Shininess
    • Texture
  • Brush Editor
    • Falloff curve
    • Name
    • Radius
    • Strength
    • Focus
    • Image
    • Operation (push/pull, smooth/noise, pinch/inflate, smudge/flatten, move)
    • Size to Screen/World
  • Blend Shapes Editor
    • Blend Mode (Additive/Average)
    • Add Target
    • Randomize Sliders
    • Restore Target Shapes
    • Bake Shape
    • Batch Generate
  • General Settings
  • Subdivision Settings
  • Display Settings
    • Edge width
    • Vertex size
    • Selected edge width
    • Selected vertex size
    • Edge alpha
    • Face alpha
    • Normals length
    • Camera field of view
    • Near clipping plane ratio
    • Walkthrough mode speed
    • Work grid width/spacing/heavy step/alpha
    • UV grid width/spacing/alpha/texture alpha
    • Texture resolution
    • Optimized face draw limit
    • Rotate camera around selection/framed selection
    • Backface culling
    • Show/Hide subdivision cages
    • Show/Hide selection subdivision cages
    • Show/Hide selection highlighting
    • Triangulate Quads on/off
    • Draw Viewport Gradient on/off
  • Color Settings
    • Viewport Background
    • Viewport Background Secondary
    • Grid
    • Viewport Text
    • Viewport Selected
    • Selection Tools
    • Manipulator X/Y/Z/Center
    • Manipulator Selected
    • Soft Selection Near
    • Soft Selection Far
    • Selection Highlighting
    • Shape Wireframe
    • Selected Shape Wireframe
    • Selected Instance Wireframe
    • Unselected Vertices
    • Selected Vertices
    • UV Pinned Vertices
    • Vertex Mode Wireframe
    • Unselected Edges
    • Unselected Creased Edges
    • Selected Edges
    • Selected Creased Edges
    • UV Seam Edges
    • Selected Faces
    • UV Faces
    • Face Mode Wireframe
    • Multi Mode Wireframe
    • Window
    • Window Light
    • Window Dark
    • Window Text
    • Window Highlight
    • Window Title Bar
    • Window Title Text
    • Load/Save Color Presets
  • Button Settings
    • Command
    • Up/Down Image
    • Anchor-to location (15 options, plus "custom")
    • Persistent on/off
    • Button Pages (+ add new page)
    • Add Button
    • Load/Save Button Presets
  • Keyboard Settings
    • Assign keyboard shortcuts to ALL program commands
    • Load/Save Keyboard Presets
  • Mouse Settings
    • Left Button (with: no add'l key, alt, ctrl, shift, ctrl+shift, alt+shift, ctrl+alt, double click)
    • Middle Button (with: no add'l key, alt, ctrl, shift, ctrl+shift, alt+shift, ctrl+alt, double click)
    • Right Button (with: no add'l key, alt, ctrl, shift, ctrl+shift, alt+shift, ctrl+alt, double click)
    • Scroll (wheel up/down with: no add'l key, alt, ctrl, shift, ctrl+shift, alt+shift, ctrl+alt)
    • Load/Save Button Presets
    • Default Presets: Silo, Lightwave, Max, Mirai, Silo Alternate, Trackpad
  • File Format Settings
  • Save/Load All Settings

Feature List - Milo (Early Access)
Core Features
  • Real-time rendering powered by the Unreal Engine for incredible fidelity and speed
  • Physically-based rendering (PBR) support for accurate simulation of real-world materials
  • High-res image export (see supported formats)
  • Customized, tweakable scenes and lighting rigs for instant great results
  • Turntable gif export
  • VR viewing with instant on/off toggling
  • Full gamepad/VR controller support for walkthroughs (movement and rotation)
  • Supports Oculus Rift, HTC Vive, and other common VR headsets
  • Full interoperability with Silo 2021, plus .fbx import from other sources
  • Supports high-poly and low-poly models
  • Auto-refresh - Automatically update loaded model when saved in another program
  • Full-fidelity live view - what you see is what you get when you hit render
  • Takes full advantage of the latest graphics cards
  • High res light and shadows with support for many light sources
  • Snappable orthogonal viewpoints
Import/Export Formats
  • Supported 3D file import formats: .fbx, .sib
  • Supported render formats: .png, .jpg, .tif, .gif
  • Supported image import formats (image backgrounds): .jpg, .png, .tif
Included Background Scenes
  • Sky
    • Adjustable sun position
    • Selectable ground types
  • Color Room
    • Adjustable color
  • Solid Color
    • Adjustable color
  • Image Background
    • Overlay on any image (in supported formats)
  • With more on the way!
Included Lighting Rigs
  • Sun/Directional
    • Single-source light with strong shadows with adjustable position, main color and ambient
  • 3-Point
    • Shadow-less triple light rig with adjustable position, main color, and ambient
  • Backlight
    • Strong back/rim light rig with adjustable position, main color, and ambient
  • Studio
    • Even product lighting from many light sources with adjustable position, main color, and ambient.
  • With more on the way!
Try Silo + Milo:
Download a FREE 7-day Trial Here

Release Notes
Download the latest version and/or see all available downloads.
View Dev Blog with latest Silo & Milo posts.

Version 2024.2

Version 2024.1

Version 2024.0

Version 2023.4

Version 2023.3

Version 2023.2

Version 2023.1

Version 2023.0

Version 2022.3

Version 2022.2

Version 2022.1

Version 2022.0.1

Version 2022.0.0
Changes Since Silo 2022.0 Beta 2 Silo 2022.0 Beta 2 Silo 2022.0 Beta 1
Version 2021.5.0

Version 2021.4.0

Version 2021.3.0

Version 2021.2.0

Version 2021.1.1

Version 2021.1.0

Version 2021.0.0

Milo (Early Access)
Version 2024.0.0

Version 2023.1.0

Version 2023.0.0

Version 2022.2.0

Version 2022.1.0

Version 2022.0.0

Version 2021.4.0

Version 2021.3.0

Version 2021.2.0

Version 2021.1.0

Version 2021.0.0