AC3D vs Houdini

AC3D is desktop 3D design software for creating models, prototypes, virtual reality simulations, and data visualisations. It runs on Linux, macOS, and Windows, with animation tools, rendering, and 3D print export. Modeling features include subdivision surfaces, UV mapping, 2D and 3D text, boolean operations, polygon reduction, and object hierarchy. It imports and exports formats including 3D Studio, Collada, DirectX, DXF, OBJ, STL, VRML, and X3D. A software development kit and plugin interface allow additions such as file formats and other functionality. An optional plugin adds animation capability for X-Plane models on Windows, Mac, and Linux. AC3D also lists support for 3Dconnexion mice on Windows. A 14-day trial is available. The maker lists one-time prices of $99.00 USD for Home / Student and $99.00 USD for Commercial / Group (5 users/seats); other listed seats have different prices. Purchases are non-refundable, and the software is delivered by download with the license emailed after purchase.

Houdini is SideFX’s procedural 3D creation system for film, television, games, motion graphics, virtual reality and synthetic-data work. Its workflow stores actions in nodes connected as networks, and supports sharing workflows and custom digital assets with colleagues. Tools cover modeling, sculpting, animation, parametric modeling, character rigging, rendering and 3D-print export. Houdini FX adds simulation tools for fluids, destruction, pyro effects, grains and cloth. KineFX supports character rigging and animation, alongside tools for hair, fur, feathers, muscles and cloth. Karma renders images in the Solaris look-development workflow, while PDG distributes tasks, handles dependencies and creates datasets for machine-learning and AI applications. Houdini runs on Windows, macOS and Linux. The free Apprentice version is for non-commercial learning and personal projects; its renders are capped at 1920x1080 and carry a watermark. SideFX lists perpetual licenses, annual upgrades, rentals, subscriptions and education licenses. Listed paid pricing starts at $299/yr, though individual options have different terms and prices.