TailMux

A tool that lets a single Mac or Linux machine access multiple independent Tailscale tailnets simultaneously, solving the problem of switching accounts or using VMs to reach resources on different tailnets. It routes connections by hostname suffix, with hard isolation between profiles, without adding a system-wide VPN or altering the official Tailscale client. Designed for developers, engineering teams, and IT professionals who manage multiple tailnets. It is positioned as a lightweight alternative to account switching, VMs, or node sharing, focusing on name-based routing at the proxy layer.

Key features

• Suffix routing by hostname
• Hard profile isolation
• Embedded tsnet per profile
• Browser PAC for auto-routing
• Service tunnels (TCP port mapping)
• SSH-bastion mode
• Diagnostic commands (diag path, diag fetch)
• CLI-first with GUI wrapper