andOTP: One-time Passwords
AntennaPod: Podcasts
Etar: Calendar
Libre Office Viewer: Document Viewer
Materialistic: Hacker News client
RedReader: Reddit (great for text)
Slide: Reddit (great for images)
SlimSocial: Facebook (I have had a lot of issues with FaceSlim. I would like to part with Facebook all together but it's still too heavily used by the people I keep in contact with.)
Swiftnotes: Notes
Tasks: Todo list/tasks
WiFiAnalyzer: Analyse nearby WiFi networks
I've had NewPipe in the past but had found it quite unusable. Based on the recommendations of this thread I'll be installing it once again.