monitor and watch multiple systems continuously

As part of my work and collaborations and universities I've attended, I have access to many machines, about 13 or so. These are all Linux machines and I could ssh using my key-pair. There are a bunch of stuff running on these machines from time to time and also these machines are shared among users. Is there a utility which could help me monitor these systems or something like take a stock of the systems as to what is going on on them. I am looking for something lightweight which just needs a list of machine ids and a very minimal installation and could fetch me this information every morning when I log into my laptop.