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.
- 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 projects SVN. The stax setups are updated regularly and are used to showcase new functions. Additionally loadtesting takes place on these installations.