SoftEther

SoftEther is a free and open-source, cross-platform, multi-protocol VPN software developed by the SoftEther Project at the University of Tsukuba, Japan. It was originally released in 2003 and has since gained popularity for its versatility and ease of use.

The core functionality of SoftEther is to create secure virtual private networks. It supports a wide range of VPN protocols, including its own proprietary SoftEther VPN protocol, as well as L2TP/IPsec, OpenVPN, SSTP, and PPTP. This multi-protocol support allows users to connect to SoftEther VPN servers from various client devices and operating systems, including Windows, macOS, Linux, and mobile platforms.

SoftEther VPN is known for its high performance, robust security features, and advanced functionalities. It offers features such as SSL/TLS encryption, RSA cryptography, and NAT traversal, which enables VPN connections to be established even behind firewalls. The software can be used to create site-to-site VPNs for connecting different networks, remote access VPNs for individual users, and even VPN servers for public access.

The project is actively maintained, with regular updates and a supportive community. SoftEther VPN is distributed under the GPLv2 license, making it free to use for both personal and commercial purposes. Its adaptability and comprehensive feature set have made it a popular choice for individuals, businesses, and educational institutions looking for a flexible and powerful VPN solution.