Seastar comes with a few sample applications:

• httpd: a simple HTTP 1.1 server capable of serving 7 million requests per second on a two-socket Xeon server
• seawreck: an HTTP loader application, similar to wrk; useful for loading httpd since wrk is limited by the host networking stack
• memcached: a memcached compatible server that demonstrates sharding and inter-core communications in seastar.