FastSocial Instagram Data
Public Instagram data: profiles, posts, reels, stories, comments and a daily top-accounts ranking

Interact with Foursquare users and places (geolocation-based checkins, photos, tips, events, etc).
Foursquare API is a free Social API that requires OAuth authentication, is served over HTTPS and has unconfirmed CORS support.
Use Foursquare's geospatial APIs and SDKs to add location-based recommendations and functionality to your apps, products and solutions.
Details from developer.foursquare.com.

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.
Public Instagram data: profiles, posts, reels, stories, comments and a daily top-accounts ranking
Top meme posts from r/dogecoin which include 'Meme' flair
Instagram and TikTok data API with 91 endpoints for profiles, posts, stories, reels, and comments
The Foursquare API is provided by Foursquare (developer.foursquare.com). Use Foursquare's geospatial APIs and SDKs to add location-based recommendations and functionality to your apps, products and solutions.
Yes. The Foursquare API is listed in the Social 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.
Yes. The Foursquare API uses OAuth authentication, so you need to register for credentials before making requests.
CORS support for the Foursquare API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Foursquare API is served over HTTPS, so it's safe to use in production.