There's also sxhkd, xbindkeys, xmodmap, xkb, and xcape. Which should be helpful for the hotkeys you mentioned.

As for more launchers, there is mutate, gnome do, lighthouse, launchy, synapse, and kupfer.

Without investing much of time looking over what precisely one might need out of the "task maangement" and "journal" links. These calendar apps may be of use? Or something like osmo? Honestly this google search might be quite useful to you.

Though I knew of a lot of those off hand, anything I didn't took less than 10 minutes off searching. Try to think of what precisely is needed out of those programs and search for something similar with linux as a search term. Mac OSes are really known best for their GUI eye candy, I doubt you will have much actual necessities missing in linux. No disrespect to Macs and all, but I just doubt it.