There are different public ESME installations: they are showcases, how an ESME setup looks like.
There is not the only public production-quality ESME setup, as ESME is intended to serve as an inhouse (read: behind-firewall) microblogging system.(see ESME's differentation from other microblogging platforms)
- http://www.esme.us/esme/: this site hosts also the ESME blog (at http://blog.esme.us/). This installation is used by many people from the development team. The layout of this site does not reflect the current SVN version.
- http://esmecloudserver.dickhirsch.staxapps.net/index and http://esmecloudserverapache.dickhirsch.staxapps.net/ use the cloud based infrastucture from http://stax.net and reflect the current version in the project's SVN. The stax setups are updated regularly from SVN and are used to showcase new functions. Additionally loadtesting takes place on these installations.