https://cellmateapp.com/ Hey my name's jesse and I built this because I wanted to use the data from a google sheet without having to worry about google authentication.
To that end, the basic functionality (Read) of the API requires no authentication, and you can see what the app will do without even having to log in. Feedback welcome!
My ultimate goal is to give newer API consumers a chance to interact with 3rd party data without having to worry about the intricacies and intimidation factor of authenticating with Oauth..