millify
Converts long numbers to pretty, human-readable strings
approximate-number
Converts numbers into a more human-friendly format, similar to `ls`'s `--human-readable` flag (`ls -lh`) or Stack Overflow's reputation numbers. For example, 123456 becomes '123k'.
aveta
Convert long numbers into abbreviated and human-readable strings.
pruned
Abreviate Number Counters in K, B, M, T for a Thousand, Million, Billion and Trillion short-hand
better-thousand-separator
a simple thousand separator for React. Can separate with comma, period, space, apostrophe and indian-numbering-system