The Cactus framework is the basis for a set of other projects that build on the infrastructure that it provides.
- Alpaca develops Cactus Tools for Application Level Profiling and Correctness Analysis
- CaFunWave is a wave equation solver using GPUs.
- XiRel develops a Next Generation Infrastructure for Numerical Relativity
- Einstein Toolkit a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics.