CASA, the Common Astronomy Software Applications package, is the primary data processing software for the Atacama Large Millimeter/submillimeter Array (ALMA) and NSF's Karl G. Jansky Very Large Array (VLA), and is frequently used also for other radio telescopes. The CASA software can process data from both single-dish and aperture-synthesis telescopes, and one of its core functionalities is to support the data reduction and imaging pipelines for ALMA, VLA and the VLA Sky Survey (VLASS).
Latest CASA Release: 5.7/6.1*
• Joint Deconvolution of single-dish and interferometry data: new task sdintimaging
• Single Dish processing: new task sdtimeaverage to average spectral data over time
• Single Dish imaging: new spectral mode 'cubesource' in tsdimaging
• Fringefit task now includes support for dispersive delays
• Heterogeneous pointing corrections can now be applied in tclean
• CASA Simulator has been transitioned to tclean, paving the way to deprecate clean
• VLA P-band models are available and ALMA ephemeris tables are updated
And much more... see 
* CASA 5.7 (=Python 2) and CASA 6.1 (=Python 3) are functionally equivalent
CASA is being developed by an international team of scientists based at the National Radio Astronomical Observatory (NRAO), the European Southern Observatory (ESO), and the National Astronomical Observatory of Japan (NAOJ), under the guidance of NRAO.
