PiXhost like imgur is a image hosting service and is free to all users. Some people who have slightly more graphical content that gets rejected at imgur switch to PiXhost because it has more lenient rules. It also has an API that is not known.

From their website:

"Welcome to the PiXhost API!
You can use this API to upload images, covers or galleries.
The following image formats are supported: image/gif, image/png, image/jpeg. Maximum image size is 10 MB.
In case you have any ideas, questions or issues, feel free to contact us at: admin@pixhost.org.
Old API users: We recently enforced https, please update your scripts."

Adding https://coinbin.org/ (from @kennethreitz) to the list.

Adding https://coinbin.org/ (from @kennethreitz) to the list.

sorry, forgot to change the HTTPS column

CoinMarketCap and CryptoCompare both are equally good but CryptoCompare supports logos for each currency. Thought this might be a good addition.

Czech national bank exchange rates
Corrected Imgur URL

add domainsdb.info API into Business

The previous link directed users to a specific view of the API which may not include all data. The updated link goes straight to the main view of all complaints with options to configure your API request, custom views, and information about the data.