What are some alternatives?
When comparing Lightstreamer and Eclipse Jetty, you can also consider the following products
Socket.io - Realtime application framework (Node.JS server)
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
PubNub - PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.