strongSwan
Modern IPsec-based VPN implementation
strongSwan is a complete IPsec implementation for Linux and other platforms supporting IKEv1 and IKEv2 key exchange. It is widely used for site-to-site and remote access VPNs.
Key features
- Full IPsec implementation
- IKEv1 and IKEv2 support
- Certificate-based auth
- Cross-platform
Strengths
- Released under the GPL-2.0 license
- Active community (2.9k GitHub stars)
- Written in C
- Tiny footprint — runs in 128 MB RAM
strongSwan replaces
Compare strongSwan
15 head-to-head comparisons.
- strongSwan vs RustDesk
- strongSwan vs frp
- strongSwan vs Headscale
- strongSwan vs Sunshine
- strongSwan vs Tailscale
- strongSwan vs JumpServer
- strongSwan vs Algo VPN
- strongSwan vs NetBird
- strongSwan vs WG-Easy
- strongSwan vs localtunnel
- strongSwan vs Teleport
- strongSwan vs OpenVPN
- strongSwan vs SoftEther VPN
- strongSwan vs Firezone
- strongSwan vs OpenConnect Server
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