Cactus has been made possible by a variety of grants and funding from different institutions. In particular, we would like to give thanks to:

• Max-Planck-Gesellschaft
• Center for Computational & Technology at LSU
• National Center for Supercomputing Applications
• Lawrence Berkeley National Laboratory
• Washington University
• University of Tübingen

Currently active grants supporting Cactus:

• NSF Collaborative Research: Community Infrastructure for General Relativistic MHD (CIGR) (NSF 0903973)

• NSF Leadership Class Scientific and Engineering Computing: Breaking Through the Limits (NSF 0725070)

• NSF Louisiana's Research Infrastructure Improvement Strategy (CyberTools) (NSF 0701491)

• NSF XiRel: Next Generation Infrastructure for Numerical Relativity (NSF 0701566 and 0653303)

• NSF Alpaca: Cactus Tools for Application Level Profiling and Correctness Analysis (NSF 0721915)

• ONR Development of an Integrated Modeling Framework for Simulations of Coastal Processes in Deltaic Environments Using High-Performance Computing (COMI)

• DOE/BOR Ubiquitous Computing and Monitoring System for Discovery and Management of Energy Resources (UCOMS) (DOE DE-FG02-04ER46136, BOR DOE/LEQSF(2004-07))

Cactus has in the past been supported through the following grants:

• NSF Astrophysics Simulation Collaboratory: Enabling Large Scale Simulations of Relativistic Astrophysics (NSF PHY-9979985)

• European Commission Theoretical Foundations of Sources of Gravitational Waves in the Next Century: Synergy between Supercomputer Simulations and Approximation Techniques (HPRN-CT-2000-00137)

• DFN-Verein GriKSL: Grid-Immersion: Kollision Schwarzer Löcher (TK 6-2-AN 200)

• European Commission GridLab: A Grid Application Toolkit and Testbed (IST-2001-32133)

• DFG Gravitational Wave Astronomy and Sources of Gravitational Waves (SFB/TR 7)

• DFN-Verein TiKSL: Tele Immersion: Collision of Black Holes

• DDDAS-TMRP DynaCode: A General DDDAS Framework with Coast and Environment Modeling Applications