Cherokee: very fast webserver
Cherokee [1] (licensed under the GNU General Public License, version 2) is a very fast [2], flexible and easy to configure Web Server. It supports the widespread technologies nowadays: FastCGI, SCGI, PHP, CGI, SSI, TLS and SSL encrypted connections, Virtual hosts, Authentication, on the fly encoding, Load Balancing, Apache compatible log files, Data Base Balancer, Reverse HTTP Proxy and much more.
A user friendly interface called cherokee-admin [3] is provided for a no-hassle configuration of the server. Check out the benchmarks and documentation to learn more, and give it a try to squeeze your hardware to the fullest!
…and…
Cherokee is very light, completely modular and it can be tailored to your specific needs. As such, disk requirements will vary depending on the options selected for the building process. A static build for embedded devices can occupy as little as 200KB, give or take.
In terms of processing power, it has been known to work with as little as 133Mhz ARM processors. It could very well work on something smaller, but we haven’t really had the chance to try it out.
[1] http://www.cherokee-project.com/
[2] http://www.cherokee-project.com/benchmarks.html
[3] http://www.cherokee-project.com/doc/bundle_cherokee-admin.html

Ist das was womit man lighttpd ersetzen kann?
Yep, würd ich schon sagen.
BTW: Hab dich wieder in meinem Blogroll added.