Boost example:
http://lists.boost.org/boost-users/att-40895/telnet.cpp 

Memcached (just run app, no need to -"d start")
http://downloads.northscale.com/memcached-1.4.5-x86.zip

CouchBase Community Edition (4.1.0)
http://www.couchbase.com/get-started-developing-nosql#Download_Couchbase_Server