iTerm2
Google Chrome
Alfred
bat
vim
tmux
Fantastical
Scanner Pro
Drafts
Calm
Todoist
contacts+
I use Evernote to keep track of valuable information that I come across surfing the web or reading books. I'm still looking for a convenient way to automatically get my kindle highlights imported into notes.
I use Google Drive primarily as archive for printed documents that I scan using my iPhone.
I use Github as a source code repo, but also as a continuous integration and project management tool. Github has rapidly increased their innovation speed since they've been taken over by Microsoft, and now they replaced several other tools such as Trello or Gitlab for me.
Google Mail
Google Calendar