APIllow
Zillow property data: 50+ fields per listing by address, URL, ZPID or ZIP, with sold data and comps

The Internet Archive.
Archive.org API is a free Open Data API that requires no API key, is served over HTTPS and does not support CORS, so it should be called from a server.
This describes the resources that make up the official Archive.org API v1.
Details from archive.readme.io.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Zillow property data: 50+ fields per listing by address, URL, ZPID or ZIP, with sold data and comps
An Indian Government platform that provides a lot of APIS for KYC, business, education & employment
Cloud data warehouse list prices, read daily from AWS and Azure pricing APIs, with price history
The Archive.org API is provided by Internet Archive (archive.readme.io). This describes the resources that make up the official Archive.org API v1.
Yes. The Archive.org API is listed in the Open Data category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Archive.org API requires no authentication, so you can start making requests without signing up.
Not directly. The Archive.org API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The Archive.org API is served over HTTPS, so it's safe to use in production.