Both OpenVPN and IKEv2 protocols have their strengths and considerations. Every VPN for Mac on my list offers at least one of these protocols, if not both. OpenVPN is widely regarded as a highly secure and versatile protocol, offering strong encryption and excellent compatibility. It provides robust protection against various cyber threats and ensures the privacy of your data. On the other hand, IKEv2 is known for its exceptional speed and stability, making it an ideal choice for Mac users who prioritize seamless connections and fast performance. Additionally, IKEv2 is ideal for iOS devices because it can quickly reconnect to VPN servers when switching between networks, such as WiFi and mobile data.