SentinelHub QGIS Plugin enables users to harness power of Sentinel Hub services directly from QGIS.
The plugin currently supports QGIS versions 2.* and 3.0.
SentinelHub QGIS Plugin is available in QGIS Official Plugin Repository. For install just open QGIS, select Plugins -> Manage and Install Plugins and search for the plugin.
In case of manual installation you can download latest release, unzip it into QGIS Plugin directory (%userprofile%/.qgis/python/plugins/ for Windows users, ~/.qgis2/python/plugins/ for Linux and OS X users) and enable plugin under QGIS Installed Plugins.
Requires properly configured QGIS Python and Plugin Build Tool for compiling and deployment.
For quick tutorial check this article.