Depending on your needs, here is how to find and download the appropriate plugin. 1. eClinicalWorks (eCW) Plugin

QGIS uses the GDAL library to handle ECW files, which may require manual setup depending on your OS. Installing QGIS with ECW support on ubuntu 20.04

"ECW" typically refers to two distinct software categories: , a prominent Electronic Health Record (EHR) system used in healthcare, and Enhanced Compressed Wavelet (ECW) , a high-performance geospatial image format.