timelist
Extension Actions
CRX ID
iplmogomomicjamihdpekpgcefblbnfk
Description from extension meta
Block all sites except those on whitelists.
Image from store
Description from store
Set the whitelist via managed policies. See https://github.com/serv-inc/timelist/blob/master/README.org#managed-policy and https://www.chromium.org/administrators/configuring-policy-for-extensions.