stunnel is described as 'The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server' and is an app in the Network & Admin category. There are four alternatives to stunnel for a variety of platforms, including Linux, Mac, Windows, iPad and iPhone. The best alternative is Shadowsocks, which is both free and Open Source. Other great apps like stunnel are V2Ray (Free, Open Source), gobetween (Free, Open Source) and Hitch TLS Proxy (Free, Open Source).
A secure socks5 proxy, designed to protect your Internet traffic. - Super Fast Bleeding edge techniques using Asynchronous I/O and Event-driven programming. - Flexible Encryption Secured with industry level encryption algorithm. Flexible to support custom algorithms.