SignalR vs Streamdata.io: What are the differences?
Developers describe SignalR as "A new library for ASP.NET developers that makes developing real-time web functionality easy". SignalR allows bi-directional communication between server and client. Servers can now push content to connected clients instantly as it becomes available. SignalR supports Web Sockets, and falls back to other compatible techniques for older browsers. SignalR includes APIs for connection management (for instance, connect and disconnect events), grouping connections, and authorization. On the other hand, Streamdata.io is detailed as "Efficiently Turn APIs into Real-time Experiences". Streamdata.io is a real-time cache proxy allowing you to poll JSON REST APIs and push updates to clients. Streamdata.io also keeps a history of modifications that occur on the data between two pollings. This way, streamdata.io is able to give you the list of modifications which happened since last time you fetched the data.
SignalR and Streamdata.io can be primarily classified as "Realtime Backend / API" tools.
SignalR is an open source tool with 7.75K GitHub stars and 2.19K GitHub forks. Here's a link to SignalR's open source repository on GitHub.