I would like to turn off all plugins without uninstalling them. I usually do this while testing to rule out an issue being caused by a plugin. I am looking for the QGIS equivalent to the ArcMap Administrator setting BlockAddIns being set to 4:
0—Load all add-ins regardless of whether or not they have digital signatures.
1—Only load and use add-ins that are digitally signed by a trusted certificate authority.
2—Only load and use add-ins that have been published by ESRI.
3—Only load add-ins from the administrator folders (described below) and all add-ins published by ESRI.
4—Do not load or execute any add-ins in this application.