Houdini vs OpenToonz

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.

OpenToonz is 2D animation software for professional and amateur production, as well as school education. It runs on Linux, macOS, and Windows, and exports formats including AVI, GIF, MP4, PNG, Spritesheet, and WebM. Its tools cover scanning, digital painting, and compositing: the GTS scanner supports four scanning types and saves settings, while painting supports anti-aliased lines and keeps painting data separate from palette data. Compositing offers xsheet and timeline interfaces and combines effects through a node tree. The software supports raster and vector images, and can convert between colored binarized TGA sequence images and OpenToonz format. An effects SDK allows image-processing plug-ins. GTS is TWAIN-compatible but available only on Windows. OpenToonz is based on Toonz, which Studio Ghibli customized and used for many years. Its source code is available under the New BSD License. OpenToonz is free for commercial and non-commercial projects, with no free trial listed.