Open Source TeamViewer Alternatives: Self-Hosted Remote Desktop (2026)

Free, open-source alternatives to TeamViewer and AnyDesk: RustDesk, MeshCentral and Apache Guacamole compared for remote support, device management and browser access.

Short version: TeamViewer's licence nags and per-seat pricing pushed a lot of people to look elsewhere. RustDesk is the closest drop-in replacement; MeshCentral and Guacamole solve adjacent problems. Stars are from GitHub on 23 October 2026.

Open-source TeamViewer alternatives compared

The three to know

Tool	Best for	Licence	Stars
RustDesk	TeamViewer-style remote support	AGPL-3.0	~127k
MeshCentral	Managing a fleet of machines	Apache-2.0	~7.5k
Apache Guacamole	Clientless browser access to RDP/VNC/SSH	Apache-2.0	~1.7k

RustDesk: the drop-in replacement

RustDesk describes itself as open-source remote desktop designed for self-hosting, as an alternative to TeamViewer. It works out of the box with public relay servers, but its real advantage is that you can run your own ID and relay server, so connections never pass through a third party. Clients exist for Windows, macOS, Linux, Android and iOS. For IT teams and family tech support alike, it is the obvious first try.

MeshCentral: when you manage many machines

MeshCentral is a complete web-based remote monitoring and management site. Install its agent on each machine and you can control desktops, open terminals and transfer files from a browser. It suits small IT departments and MSPs looking after dozens or hundreds of devices — more of an RMM tool than a one-off support app.

Apache Guacamole: nothing to install on the client

Guacamole is a clientless remote desktop gateway: users open a browser and reach machines over RDP, VNC or SSH, with no client software. It is ideal for giving staff or students access to internal machines through a single secured web portal.

Self-hosting it safely

Steps to self-host remote desktop access securely

Run your own relay for RustDesk instead of public servers.
Keep it behind a VPN such as WireGuard or Tailscale where you can.
Turn on two-factor authentication for MeshCentral and Guacamole logins.
Patch promptly — remote-access tools are prime attack targets.

Remote access is exactly the kind of tool attackers look for, so treat it like infrastructure, not an app. For more self-hosted swaps, see our self-hosted Google Drive guide and n8n alternatives for automation.

Frequently asked questions

What is the best free alternative to TeamViewer?+

RustDesk is the best free, open-source alternative for most people. It is licensed under AGPL-3.0, has clients for Windows, macOS, Linux, Android and iOS, and works out of the box through public relay servers. Its main advantage is that you can self-host your own ID and relay server, so remote sessions never pass through a third party. It is the closest experience to TeamViewer.

Can I self-host RustDesk?+

Yes, and it is designed for it. RustDesk lets you run your own ID and relay server on a VPS or a machine on your network, then point your clients at it. That keeps connection metadata and relayed traffic on infrastructure you control, which matters for companies and privacy-conscious users. You can also use the public servers to start, then move to your own once you are comfortable.

What is MeshCentral used for?+

MeshCentral is an open-source, web-based remote monitoring and management platform licensed under Apache-2.0. You install its agent on each computer, then control desktops, open terminals and transfer files from a browser. It suits IT departments and managed service providers looking after many machines, rather than one-off support sessions, and you host the whole platform yourself so device data stays under your control.

Is Apache Guacamole a TeamViewer replacement?+

Partly. Apache Guacamole is a clientless remote desktop gateway: users open a web browser and connect to machines over RDP, VNC or SSH without installing any client. That makes it excellent for giving staff or students secure access to internal machines through one portal. It is less suited to ad-hoc support for someone else's personal computer, which is where RustDesk is the better fit.

Is self-hosted remote desktop secure?+

It can be more secure than a public service, but only if you maintain it. Run your own relay rather than public servers, keep remote access behind a VPN where possible, enable two-factor authentication on web logins, and apply security updates quickly. Remote-access tools are a favourite target for attackers, so monitor logins and never leave default credentials or exposed admin pages on the open internet.