react-native-user-identity
Get the user id configured for the device (iCloud recordID for iOS, email of a device account for android)
@vlasky/whomst
Updated fork of whomst. Provides functions to retrieve UNIX user (passwd) and group/gid info, with multiple fallback methods
insta-id-of
Find User ID of any instagram user directly from command line
facebook-id-of
Easily find User ID of any facebook user directly from command line
usid
Unique and Short ID Generator