Xively is described as 'brings meaning to the Internet of Things through cloud based services that simplify and accelerate the creation, deployment, scaling and management of compelling products and solutions' and is an website in the Bitcoin & Cryptocurrency category. There are more than 10 alternatives to Xively, not only websites but also apps for a variety of platforms, including Android, Windows, Linux and Android Tablet. The best alternative is ThingSpeak. It's not free, so if you're looking for a free alternative, you could try Fluxtream or Android Things. Other great sites and apps similar to Xively are Beebotte (Freemium), t6 IoT (Free, Open Source), dweet.io (Paid) and Ubidots (Freemium).
ThingSpeak™ is an IoT analytics platform service that allows you to aggregate, visualize and analyze live data streams in the cloud. ThingSpeak provides instant visualizations of data posted by your devices to ThingSpeak.
Beebotte is a cloud platform providing key building blocks to accelerate the development of the Internet of Things and Real time connected applications. Beebotte supports REST, Websockets and MQTT to connect anything and everything in real time.
IoT Application Development Platform where IoT Entrepreneurs, OEMs, and innovators come to develop and deploy IoT solutions that solve problems or monitor systems to avoid potential problems in a simple and quick way.
IoTPlotter.com is a website created for the maker community allowing anybody to send raw sensor data to be stored and graphed. Featuring long-term history, simple APIs, responsive graphs, and a scalable design to accommodate large numbers of users and devices.
AskSensors is an IoT platform designed to be the easiest application on the market. You can connect your sensors easily, manage connected devices in real time and analyze the acquired data over the cloud.