Freedom251 › 3D modeling software
Antimony
What Antimony is
Antimony is free computer-aided design software for Linux, macOS, and Windows desktops. Its visual, node-based CAD workflow uses graphs and includes a 3D viewport for viewing generated geometry. The project says this approach evolved from Lisp machines rather than drafting tables. Users can create nested graphs with strongly typed inputs and outputs. Every node is defined as a script, and scripts can create interface primitives such as points and wireframes for 3D views. The f-rep parser accepts infix mathematical notation alongside its earlier expression syntax. Mesh export runs through an Export node in the graph. Antimony also includes a human-readable file format intended to make version control and manual editing friendlier. The README lists a prebuilt Mac application and source builds for Mac and Linux, plus community packages for Debian 11 or later, FreeBSD 13 or later, and Ubuntu 22.04 or later. Fedora 22 through 32 is no longer supported. Antimony is released under the MIT License, allowing use, copying, modification, distribution, sublicensing, and sale under its conditions. The project describes beta stability and advises against mission-critical use. General questions go to a Google Group; specific issues go to GitHub.
Who it suits
Antimony suits CAD users who prefer visual node graphs, script-defined nodes, and parametric modeling. It is better for experimental or non-critical work because the project labels it beta stability.
What it does well
- Visual node-based CAD workflow
- Built-in 3D geometry viewport
- Strongly typed nested graphs
- Mesh export through graph nodes
- Human-readable project file format
What to know first
- Project is at beta stability
- Not recommended for mission-critical use
- Fedora 22–32 packages no longer supported
- Prebuilt application listed for Mac
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Antimony | MIT-licensed software · beta stability · long-term maintenance mode | Free |
As github.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
Antimony offers a graph-driven CAD model with scripting, parametric features, viewport visualization, and mesh export. Its MIT license is permissive, but beta status limits suitability for critical production work.
Facts from Antimony's own pages
- Availability
- The README lists a prebuilt application for Mac and source builds for Mac and Linux. · github.com, 12 Oct 2026
- Community packages
- The README lists community-supported packages for Debian 11 or later, FreeBSD 13 or later, and Ubuntu 22.04 or later, and says Fedora 22 through 32 is no longer supported. · github.com, 12 Oct 2026
- Design approach
- The project describes its CAD approach as one that evolved from Lisp machines rather than drafting tables. · github.com, 12 Oct 2026
- Export
- The release notes describe mesh export and an export workflow that runs from an Export node in the graph. · github.com, 12 Oct 2026
- File format
- The project added a human-readable file format described as friendlier for version control and manual editing. · github.com, 12 Oct 2026
- Free plan
- Yes · github.com, 22 Sept 2026
- Integrations
- The repository describes Antimony as a spiritual successor to kokopelli by way of fabserver. · github.com, 12 Oct 2026
- License
- Antimony is released under the MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its conditions. · github.com, 12 Oct 2026
- Math syntax
- The f-rep parser supports infix math notation as well as the earlier expression syntax. · github.com, 12 Oct 2026
- Modeling
- Antimony includes a 3D viewport for viewing geometry generated in its graphs. · github.com, 12 Oct 2026
- Nested graphs
- Users can add subgraphs with strongly typed inputs and outputs. · github.com, 12 Oct 2026
- Parametric modeling
- Yes · github.com, 22 Sept 2026
- Platform access
- desktop · github.com, 22 Sept 2026
- Purpose
- Antimony is a computer-aided design tool built around a visual, node-based approach to CAD. · github.com, 12 Oct 2026
- Render engine
- built-in · github.com, 22 Sept 2026
- Scripting
- The release notes say all nodes are defined as scripts and scripts can define UI primitives such as points and wireframes for 3D views. · github.com, 12 Oct 2026
- Security and reliability
- The project says it is at beta stability and is not recommended for mission-critical use. · github.com, 12 Oct 2026
- Support
- The README directs general questions to a Google Group and specific issues to the GitHub issue tracker. · github.com, 12 Oct 2026
Where Antimony stands on Freedom251
- 3D modeling software#66 of 147