Best Open Source Alternatives to TeamViewer

Compare the best free and open-source alternatives to TeamViewer — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 1 alternatives

TeamViewer

Proprietary SaaS

TeamViewer alternatives compared

Open-source alternatives to TeamViewer, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Defguard	2,895	—	DockerLinux	Yes	Nov 2026	Visit

Top open-source TeamViewer alternatives

Defguard2,895

Defguard provides self-hosted zero-trust access, replacing cloud IAM and VPNs by uniting WireGuard tunnels with native OpenID Connect SSO and MFA.

DockerLinux

vs TeamViewer: a free, open-source option you fully control.

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EasyP

Promoted

The modern standard for Protobuf workflows

Lint, codegen, breaking-change checks and dependency management in one Git-native CLI. Open source, no registry lock-in.

lintgeneratebreakingeasyp.lock

go · ts · java generated

$ easyp breaking

backward compatible