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Pound Website
The Pound program is a reverse proxy, load balancer and HTTPS front-end for Web server(s). Pound was developed to enable distributing the load among several Web-servers and to allow for a convenient SSL wrapper for those Web servers that do not offer it natively. Pound is distributed under the GPL - no warranty, it's free to use, copy and give away.


  1. a reverse-proxy: it passes requests from client browsers to one or more back-end servers.
  2. a load balancer: it will distribute the requests from the client browsers among several back-end servers, while keeping session information.
  3. an SSL wrapper: Pound will decrypt HTTPS requests from client browsers and pass them as plain HTTP to the back-end servers.
  4. an HTTP/HTTPS sanitizer: Pound will verify requests for correctness and accept only well-formed ones.
  5. a fail over-server: should a back-end server fail, Pound will take note of the fact and stop passing requests to it until it recovers.
  6. a request redirector: requests may be distributed among servers according to the requested URL.

From Wikipedia
Pound is a lightweight open source reverse proxy program suitable to be used as a web server load balancing solution... Using regular expression matching on the requested URLs, Pound can pass different kinds of requests to different backend server groups.