The Shippo Python SDK by Shippo allows to interact with the shipping features of the API, providing resources to include USPS, UPS, and FedEx in the same interface. Installation, testing, and dependencies available on the site.
Groupon, which calls itself a "social commerce site," is one of many online services that help consumers pool their buying power to get great deals. However, few companies can share Groupon's experience of attracting $135 million dollars from the same venture capital funds that helped grow Facebook and Zynga. To help third-party developers and affiliate members get the word out about its daily specials, Groupon has released a publicly available API.
Nexchange has positioned itself as the cryptocurrency exchange for crypto enthusiasts created by crypto enthusiasts. With the beta launch of its open source cryptocurrency exchange, the company has delivered API access to the exchange that other enthusiasts can freely access and clone.
Adding shipping and posting functionalities to your applications may be necessary for your what you're trying to achieve, but it may not always be a quick and easy process. EasyPost is a posting and shipping service specifically designed for applications, saving developers some very valuable development time. The EasyPost API makes it possible for developers to access this functionality and easily integrate it with other applications.