Antimony

Free plan

What the maker publishes

Availability

The README lists a prebuilt application for Mac and source builds for Mac and Linux. source

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. source

Design approach

The project describes its CAD approach as one that evolved from Lisp machines rather than drafting tables. source

Export

The release notes describe mesh export and an export workflow that runs from an Export node in the graph. source

File format

The project added a human-readable file format described as friendlier for version control and manual editing. source

Free plan

Yes source

Integrations

The repository describes Antimony as a spiritual successor to kokopelli by way of fabserver. source

License

Antimony is released under the MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its conditions. source

Math syntax

The f-rep parser supports infix math notation as well as the earlier expression syntax. source

Modeling

Antimony includes a 3D viewport for viewing geometry generated in its graphs. source

Nested graphs

Users can add subgraphs with strongly typed inputs and outputs. source

Parametric modeling

Yes source

Platform access

desktop source

Purpose

Antimony is a computer-aided design tool built around a visual, node-based approach to CAD. source

Render engine

built-in source

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. source

Security and reliability

The project says it is at beta stability and is not recommended for mission-critical use. source

Support

The README directs general questions to a Google Group and specific issues to the GitHub issue tracker. source

Checked against the maker's pages on 12 Oct 2026.