We use HootSuite to manage our social media, including regular posts, advertising campaigns, and responding to messages. The product allows the users to add all the social accounts on a company on one integrated interface. 

The best feature of the product is that you can create one post, and it can be released on all platforms, with customization as per the platform (such as hashtags, mentions, etc.). 

Our social team uses the product actively to manage all our social media, and they find the product really useful.

I have primarily used HootSuite in the context of small nonprofits or community groups without paid staff dedicated to social media (if they have any paid staff at all).