What are the differences between ExpressVPN and OpenVPN?

ExpressVPN and OpenVPN are distinct entities within the realm of online privacy and security. ExpressVPN is a commercial VPN service provider offering a proprietary suite of VPN solutions and client software that uses various VPN protocols, including its Lightway protocol as well as the open-source OpenVPN among others, to encrypt user's internet connections and secure their online activities. In contrast, OpenVPN refers specifically to the open-source VPN protocol itself, which is widely respected for its strong security features. It's often used by various VPN services including ExpressVPN and can be deployed by individuals directly onto their devices or networks. The differences lie primarily in their scope: ExpressVPN is a comprehensive VPN service providing ease of use, server infrastructure, and additional features like split tunneling and 24/7 customer support, while OpenVPN is a protocol that can be customized by advanced users and integrated into various applications to provide secure communication tunnels.