Monitor runs in the terminal and updates every 30s.
You can scroll with arrows, pageUp, pageDown, home and end or you can use Vi keybindings.
Download:
You can specify which currencies you want to watch (default is all) by including their symbols in a file named "watch.txt". The app looks for the file in the current directory.
Example of watch.txt:
BTC
ETH
IOTA
NEO
Many thanks to people behind these repositories:
Data is from coinmarketcap.com API