LIGO Scientific Collaboration 
- CBC search in LIGO data analysis | SNU, EWU
- Parameter Estimation | SNU, EWU, IJU
- Detector’s characterization | UNIST
- Computing Facility | KISTI
- Mirror Coating for 3rd-Generation Interferometers | SKKU
KAGRA Collaboration 
- Detector’s Characterization | UNIST
- GW theory and astrophysics | NIMS
- Squeezed state of Laser | KASI
- Data Analysis | IJU
Einstein Telescope Project 
- Squeezed State of Laser | KASI, KHU, KAIST
- Newtonian Noise Study | NIMS
Center for the Gravitational Wave Universe 
- 7D Telescope Project and Multimessenger Astronomy | SNU
- Resolving Hubble Tension | SNU
- GW Astronomy with Artificial Intelligence | SNU, Postech
Next-Generation GW Telescope
- Superconducting Gravity Gradiometer (SOGRO) | CAU, NIMS, IBS, EWU
- SEED (Superconducting Earthquake Early Detection) | NIMS
Numerical Relativity
- Black hole collision | CAU, IBS
- AMR code development | KASI, NIMS, UNIST
Theoretical Astronomy and Astrophysics
- Testing GR and modified gravity with GWs | NIMS, EWU
- Neutron star equation of states & Tidal deformability | PNU, UNIST