[Update 2015-09-08: The key for the sslip.io domain has been revoked, which means that the service is no longer usable; however, the engineering behind sslip.io is still sound, and may be of interest to those who want to deploy a private version] sslip.io enables developers to equip their servers with valid SSL certificates for free (on the downside, the server's URI will be an awkward mash-up of