AppVeyor
async
Async
CentOS
CTRL
dev
DNS
ESC
Github
gzip
homebrew
hostname
http
https
httpuv
httr
ip
ipv
libcurl
Libcurl
libssh
libssl
netscape
openssl
OSX
preconfigured
rb
RHEL
Rtools
sftp
SMTP
ssl
SSL
zlib
