Open Source Outline VPN AlternativesVPN Services & VPN Clients like Outline VPN

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.

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Alternatives list

  1. Proton VPN icon
    Official Partner

    Proton VPN

     510 likes

    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.

    235 Proton VPN alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Google Chrome
    • Apple TV
    • Flathub
    • F-Droid
    • Android TV
    • Flatpak
    • Fire TV
    • Mozilla Firefox
    Proton VPN screenshot 1
     
  2. Mullvad VPN icon

    Mullvad VPN

     281 likes

    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.

    228 Mullvad VPN alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • F-Droid
    • WireGuard
    • Tor
    • OpenWrt
    • Tomato
    • pfSense
    • DD-WRT
    Mullvad VPN screenshot 1
     
  4. OpenVPN Connect icon

    OpenVPN Connect

     775 likes

    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.

    59 OpenVPN Connect alternatives

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Cloudron
    OpenVPN Connect screenshot 1
     
  5. Proton VPN icon
    Official Partner

    Proton VPN

    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.

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Google Chrome
    • CH flagSwitzerland
    More about Proton VPNVisit website
  6. Tor VPN icon

    Tor VPN

     61 likes

    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.

    62 Tor VPN alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    Tor VPN screenshot 1
     
  7. WireGuard icon

    WireGuard

     264 likes

    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.

    59 WireGuard alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • BSD
    • iPad
    • Self-Hosted
    • FreeBSD
    • OpenWrt
    • Termux
    WireGuard screenshot 1
     
  8. Windscribe icon

    Windscribe

     180 likes

    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.

    220 Windscribe alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • Microsoft Edge
    • Google Chrome
    • Apple TV
    • F-Droid
    • Android TV
    • Fire TV
    • Mozilla Firefox
    Windscribe screenshot 1
     
  10. Psiphon icon

    Psiphon

     254 likes

    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.

    194 Psiphon alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Psiphon screenshot 1
     
  11. IVPN icon

    IVPN

     46 likes

    Privacy-centered VPN with WireGuard, multi-hop connections, built-in ad/tracker blocking, no activity logs, open-source apps, cash or crypto payments, self-hosted servers, independent security audits, no affiliate marketing, privacy donations, and educational guides.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • F-Droid
    • WireGuard
    • OPNsense
    • OpenWrt
    • Tomato
    • pfSense
    • OpenVPN
    • DD-WRT
    IVPN screenshot 1
     
  12. Obscura VPN icon

    Obscura VPN

     21 likes

    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.

    77 Obscura VPN alternatives

    Cost / License

    • Paid
    • Open Source

    Application types

    Platforms

    • Mac
    • iPhone
    • WireGuard
    Obscura VPN screenshot 1
     
  13. NetBird icon

    NetBird

     32 likes

    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.

    36 NetBird alternatives

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Docker
    • Homebrew
    • Docker Hub
    List of connected machines (peers)
     
  14. Shadowsocks icon

    Shadowsocks

     127 likes

    SOCKS5 proxy offering high-speed asynchronous networking, flexible encryption, and easy deployment. Optimized for cross-platform use on PC, Mac, mobile, and routers. Open-source design supports secure, uncensored, and private Internet access worldwide.

    189 Shadowsocks alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Shadowsocks screenshot 1
     
  15. NymVPN icon

    NymVPN

     18 likes

    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.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • AppImageHub
    • Arch Linux
    • Flathub
    • F-Droid
    • WireGuard
    • Ubuntu
    • Debian
    • Flatpak
    • GitHub
    More than a VPN
     
12 of 51 Outline VPN alternatives