Although Facebook's insights utilities are okay for what we want, Twitter, G+ and Mastodon do not have built-in tools to collect some basic information, like the evolution of the number of followers over time.
There used to be ThinkUp, but that project is closed.
In the first part of this task I would like us to make a list of solutions that can help us collect data from our social media accounts and store it in parseable files.
In the second part, I would like us to work out how to implement these solutions so the collection can be done automatically at regular intervals, preferably on a server that is always on.