$ luarocks install --server=http://luarocks.org/manifests/gui <name>

Modules

libcidr-ffi by GUI — downloads: 1,544
libcidr bindings for Lua
lua-resty-auto-ssl by GUI — downloads: 220,529
Automatic SSL handling for OpenResty
lua-resty-mail by GUI — downloads: 15
Email and SMTP library for OpenResty