Open-source alternatives guide · Updated 2026

Best open-source alternatives to Teamviewer

Q: How should I evaluate Teamviewer alternatives?

Map must-have Teamviewer workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.

Compare the best free and open-source alternatives to TeamViewer — 3 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.

3verified alternatives
1self-hosted signals
3categories

Only explicit alternative relationships are shown—never inferred competitor claims.

Overview

This guide compares 3 verified open-source alternatives to TeamViewer, including scrcpy, RustDesk, and Defguard.

Projects appear across Developer Tools, Infrastructure, and Security & Privacy. 1 option includes a self-hosting signal — see the self-hosted catalog. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.

Strongest repository-activity signal: scrcpy · Jump to ranking · 146.6K stars

About TeamViewer

Proprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, repository activity, and self-hosting options befo

Ranked open-source alternatives to TeamViewer

Compare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.

scrcpy

Open-source alternative to TeamViewer

FranceDeveloper ToolsApache-2.0

Display and control your Android device

Best for: Product engineers
Deployment: Inspectable source
License: Apache-2.0
Activity: Updated 17 days ago

Key capabilities

Android

Ffmpeg Libav

RustDesk

Open-source alternative to TeamViewer

ChinaInfrastructureAGPL-3.0Self-hosted

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer. Review the official repository, license, release activity, and deployment docu

Best for: Infrastructure teams
Deployment: Self-hostable
License: AGPL-3.0
Activity: Updated 1 hour ago

Key capabilities

Defguard

Open-source alternative to TeamViewer

Security & PrivacyLicense not declared

Zero-Trust access management with true WireGuard® 2FA/MFA

Zero-Trust access management with true WireGuard® 2FA/MFA Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Security teams
Deployment: Inspectable source
License: License not declared
Activity: Updated 30 hours ago

Key capabilities

security authentication

oidc

oauth

How to choose a TeamViewer alternative

Map must-have capabilitiesList the workflows in TeamViewer you cannot drop during migration.

Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.

Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.

Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.

Frequently asked questions about TeamViewer alternatives

What are the best open-source alternatives to TeamViewer?

OpenSourceChoice currently lists 3 projects with an explicit alternative relationship to TeamViewer. Catalog highlights include scrcpy, RustDesk, and Defguard. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.

Are open-source alternatives to TeamViewer free?

Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.

Can I self-host an alternative to TeamViewer?

1 option in this list carry a self-hosting signal. Confirm the official install guide, backups, upgrades, and hardening steps before production.

How should I evaluate TeamViewer alternatives?

Map must-have TeamViewer workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.