Check if a local or remote port is reachable
MIT License
Check if your code is running on Travis
Get the ID of the process that uses a certain port
Check if a string is an IP address
Check whether a file can be executed
Check if the internet connection is up
Check if your code is running on Heroku
Check if a number is a redirect HTTP status code
Check if a URL is relative
Check if a string is a URL
Get an available TCP port
Check if servers are reachable
Wait for localhost to be ready from the command-line
Get an available port
Wait for localhost to be ready
Get your public IP address - very fast!