Crowdfire is a social media manager similar to Hootsuite but affordable. It has a Chrome extension (I think Firefox too but idk) that makes it super easy to put content into your scheduler. It also has mobile apps. I use Crowdfire together with an RSS reader to keep my social media assets active. I would be so happy if Brave supported this extension!!!
I don’t have any data on the popularity of the service but I personally just bought an annual subscription last week and it has been saving me tons of time!! I think that for people who are responsible for managing a lot of social media these types of apps are major pieces of our workflow and need support from our browsers to really make them useful.