Ask HN: What's your favourite API?

Stripe and Mailgun and Twitter are some of the best documented, clearest to use APIs.

The Google Maps API i can usually get cool stuff happening with quickly.

My favorites overall are probably Sunlight labs APIs though: http://services.sunlightlabs.com/

The sunlight labs stuff looks cool.

Google analytics API. We use it, have been for a few months and its excellent.

I still think the Amazon S3 API is really nice.

Zencoder's api is solid and easy to work with.

for(facebook=0,Win32=0,twitter=1; !(facebook && twitter); ++twitter) {}

Twilio.