Palamoa is described as 'One main focus is customizability without making the configuration too complicated. While Palamoa expects data in JSON format, its content is fully configurable. Any sensor device that can send JSON data can easily get connected' and is an website in the Bitcoin & Cryptocurrency category. There are six alternatives to Palamoa, not only websites but also apps for a variety of platforms, including SaaS, Mac, Windows and Linux. The best alternative is ThingSpeak. It's not free, so if you're looking for a free alternative, you could try AskSensors or Kaa. Other great sites and apps similar to Palamoa are dweet.io (Paid), Xively (Paid) and m2mlight (Free, Open Source).
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.
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.
This platform is aimed at enthusiasts who have a basic knowledge of Internet of Thing (IoT) devices. M2mlight.com is a free basic platform service for IoT devices. You can store your cameras, sensors, actuators and alerts data in the cloud.