CoinMarketCap API might be a bit more popular than Robinhood Crypto. We know about 1 link to it since March 2021 and only 1 link to Robinhood Crypto. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
RobinHood- https://robinhood.com/us/en/about/crypto/. Source: about 3 years ago
Before you can use the CMC API, you need to sign up for a (free) developer account, to receive an API key. You can sign up at pro.coinmarketcap.com and - after verifying your account - you can retrieve your API key. Source: almost 3 years ago
Coinbase - Bitcoin, safe and easy.
ViewBase - Blockchain analytics for cryptocurrency traders 📊
CoinFalcon - Buy and sell bitcoin, litecoin, ethereum and iota with ease.
Coingecko - CoinGecko is a free to use web-based and mobile application that provides financial market data for more than 2000 digital currencies.
Crumbs - Turn spare change into crypto 🚀🌕
BitcoinAverage Cryptocurrency API - The BitcoinAverage Cryptocurrency API provides real time Websocket and Historical Price price data for hundreds of cryptocurrencies.