F-Droid - F-Droid is an interesting alternative for Android users who want to try something different and not have to use the Goole Play store all the time.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Aptoide - Aptoide is a third party replacement for the traditional Google Play Store.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
APK Pure - Download apk for Android with APKPure APK downloader. NoAds, Faster apk downloads and apk file update speed. Best of all, it's free
iTerm2 - A terminal emulator for macOS that does amazing things.