The best open source alternative to Outline VPN is Proton VPN. If that doesn't suit you, our users have ranked more than 100 alternatives to Outline VPN and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Outline VPN are Mullvad VPN, OpenVPN Connect, Tor VPN and WireGuard.
Proton VPN provides Swiss-based online security with a high-speed network, free version, and advanced features like VPN Accelerator, AES-256 encryption, a no-logs policy, and support for platforms including PCs and smartphones, enabling content access globally.
Delivers anonymous, privacy-focused VPN connections with no signup data or logs, anonymous payments, support for the latest encryption, WireGuard multihop, SOCKS5, DNS ad-blocking, kill switch, high-speed servers up to 40Gb/s, and open-source transparency.
OpenVPN Connect provides flexible VPN solutions to secure your data communications, whether it's for Internet privacy, remote access for employees, securing IoT, or for networking Cloud data centers.
A VPN that grants network-level privacy on mobile by routing app traffic through Tor, assigns each app a separate circuit for improved separation, bypasses app-level censorship, features per-app routing, security via Rust-based implementation, and awaits early adopter feedback.
Implements modern cryptographic standards, maintains a small codebase for security auditing, ensures fast cross-platform VPN performance, supports embedded and enterprise environments, offers easy deployment, IPv4/IPv6, secure key exchange, and mobile app support.
Windscribe is a desktop application and browser extension that work together to block ads and trackers, restore access to blocked content and help you safeguard your privacy online.
Enjoy unfiltered Internet access globally using Psiphon's open-source VPN. It offers AES-256 encryption, split tunneling, WireGuard support, and more, all without requiring user registration. Perfect for communities in censored regions and those seeking privacy-focused alternatives.
IVPN is a privacy-first VPN service that offers WireGuard, multi-hop connections and a built-in ad/tracker blocker.
Privacy-focused VPN without IP or traffic logs, ensuring user anonymity with random logins; supports Bitcoin payments, uses end-to-end encryption through WireGuard; excels in bypassing internet filters and maintaining user anonymity with two-party protocol involving exit servers operated by Mullvad.
NetBird is an open-source Zero Trust networking platform that makes it easy for engineers to create fast, secure, and private networks with simple, decentralized management.
Decentralized VPN featuring mixnet technology to encrypt traffic and obscure metadata, provides 5-hop and 2-hop privacy modes, WireGuard for speed, AmneziaWG for censorship resistance, hides IP and location, blocks ads, and does not support centralized logs.
Switzerland
Sweden
EU
United States
Canada
Gibraltar
China
Germany