NetBird is described as 'Open-source Zero Trust networking platform that makes it easy for engineers to create fast, secure, and private networks with simple, decentralized management' and is a VPN service in the security & privacy category. There are more than 25 alternatives to NetBird for a variety of platforms, including Linux, Windows, Mac, Android and iPhone apps. The best NetBird alternative is OpenVPN Connect, which is both free and Open Source. Other great apps like NetBird are Tailscale, LogMeIn Hamachi, SoftEther VPN and ZeroTier.
defguard is an SSO & VPN Server based on OpenID and WireGuard VPN with unique secure & private architecture for building secure and privacy-aware organizations.
Provides secure access through zero trust principles, replacing traditional VPNs for remote work, enabling centralized management, user connectivity, and application-level privilege without infrastructure changes.
Twingate is the most popular commercial alternative to NetBird.
Nebula is a scalable overlay networking tool with a focus on performance, simplicity and security. It lets you seamlessly connect computers anywhere in the world. Nebula runs on Linux, OSX, and Windows. Mobile is in active development.
A next-gen FOSS self-hosted unified zero trust secure access platform that can operate as a remote access VPN, a ZTNA/BeyondCorp platform, API/AI gateway, a PaaS, and more.
Offers an open source sharing solution built on OpenZiti for secure app tunneling. Available as SaaS or self-hosting, it supports decentralized content sharing, is scalable for large and small deployments, allows private, secure communication, and operates on Raspberry Pi.
Firezone is an open-core(uses Elastic license) VPN server and egress firewall for Linux that makes it simple to manage secure remote access to your company’s private networks. Built on modern technologies, including the new blazing fast WireGuard tunneling protocol, Firezone is...
Seamless connectivity across existing network topologies. Zero Trust principles. Zero client configuration. Deployed in a few minutes. Single sign-on. Multi-Factor-Authentication. Passwordless. Precise access controls. Evaluate device security posture.
Netrinos creates a private, local area network over top of the public internet. It spans networks, firewalls, and routers like they're not even there. If you can surf the web, your network is there.
remote.it is a platform that brings the world of disconnected networks to your browser, desktop and mobile devices. Securely access devices connected to any network like they were on your own local network.
OpenXpress is a robust and versatile platform offering Docker container hosting with a range of features designed to simplify and enhance your web application deployment.
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Though this uses wireguard, this is still centralized VPN (Hub spoke) design, has good controls, but the project is driven by few people. Concerns - What I read over on reddit is on the free/libre tier the constraints were unreasonable, but it now seems to be completely FLOSS and there is paid enterprise support option, the road map is not public, and I felt the project can become closed source again, if the owner wishes so.