The CoinMarketCap C# SDK by JakubKuziemski allows developers to integrate the CoinMarketCap API into their C# applications. This SDK displays the current rates of the first ten currencies. Documentation is given in Polish.
Of all the markets being impacted by the booming API economy, perhaps none has seen as much activity and innovation as the payments space. The past several years have seen the launch of a number of disruptive and successful API-centric upstarts, including Stripe and Balanced. Meanwhile, entrenched players like PayPal and Verifone have responded with new offerings of their own.
It may seem like lately geo APIs and mashups are getting a lot of coverage here on ProgrammableWeb, and for due reason: the geo API providers have been busy. From the release of v3 of the Google Maps API to the release of Yahoo!'s Placemaker "geo-enrichment" platform, there has been a lot of activity on the mapping front in the last few weeks.
Just months ago, Chirpify was known as the company that "turns tweets into transactions." Chirpify has now deemed such commerce "in-stream commerce" and CEO (Chris Teso) has an interesting outlook on the industry that he feels Chirpify leads.