Default Password Lists

Lists of Passwords by Vendors Make and Model, or Software and Version

https://github.com/danielmiessler/SecLists/tree/master/Passwords/Default-Credentials

https://github.com/govolution/betterdefaultpasslist

Credential Scanning Tools:

https://github.com/ztgrace/changeme

https://github.com/Viralmaniar/Passhunt