If you like Firefox Containers then you might want to check out this fork. It's very nice.
"Fork of Multi-Account Containers that adds transition rules, which let you choose the container to open a page based on the opening container. It also adds other improvements to reduce papercuts and unwanted prompts."
https://addons.mozilla.org/en-US/firefox/addon/containers-with-transitions/
Bobinas P4G is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.
All Bobinas P4G content and data are available under the Creative Commons Attribution 3.0 license.