PuTTY - Popular free terminal application. Mostly used as an SSH client.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Standard Notes - A safe place for your notes, thoughts, and life's work
iTerm2 - A terminal emulator for macOS that does amazing things.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.