Node Bittrex API is a Node.js library for interfacing with the Bittrex API. The library is open source, however, the Bittrex API requires an API key for use. The library is not officially owned by Bittrex, though it's usage is endorsed by Bittrex on their API documentation page.
Location data and storage company SimpleGeo has announced plans to change its pay-per-use pricing for the SimpleGeo API, removing a free option for low volume users. Instead, the company will offer tiered pricing, with 60 day free trials at every tier.