Thought Train is described as 'Join 11,000+ users who take quick notes with Thought Train, a humble menubar app for macOS and Windows' and is an app in the os & utilities category. There are four alternatives to Thought Train for Mac, iPad and iPhone. The best alternative is Quick Draft, which is free. Other great apps like Thought Train are FiveNotes, FIPLAB MiniNote and Jot menubar notes.
Sometimes you just need a place to jot down a quick note or draft an email or text on the fly. Write your draft and immediately copy or share to another app. When you come back, keep working or delete the note and start over.
The app lives in your Mac's menubar and is always available at the click of a button. Use it to write down your thoughts and important pieces of information and be happy in the knowledge that your notes will be easily accessible when needed.