LnkStart and Tailscale

Tailscale builds a private network between your machines. LnkStart publishes one of your services on your domain, for people who install nothing. They do not solve the same problem.

What it does better: Tailscale

It is a full private network between your machines, which LnkStart neither does nor tries to.
It connects peer to peer without you keeping a VPS: it works the route out on its own.
TCP, UDP and access to the whole machine out of the box, with identity-based access control.
Clients for practically every system, phones included.

Where we differ

The visitor installs nothing: they open an address on your domain in their browser, with its padlock.
Automatic HTTPS, one certificate per service, renewed on its own.
With the service down it answers with your notice page or your fallback address, never a raw error.
The address is on your domain and the traffic never crosses third-party servers.

Side by side

The visitor: LnkStartInstalls nothing, opens your domainTailscaleNeeds the private network; with Funnel, opens a *.ts.net address
HTTPS: LnkStartAutomatic, one certificate per serviceTailscaleWith Funnel, on its *.ts.net domain, not yours
Service down: LnkStartNotice page or redirect, never a raw errorTailscaleThe browser's error page
What is reachable: LnkStartOne serviceTailscaleThe private network; with Funnel, one service
TCP / UDP: LnkStartYesTailscaleYes, out of the box
Needs a VPS: LnkStartYes: it is what keeps the traffic away from anyone elseTailscaleNo

What is compared	LnkStart	Tailscale
The visitor	Installs nothing, opens your domain	Needs the private network; with Funnel, opens a *.ts.net address
HTTPS	Automatic, one certificate per service	With Funnel, on its *.ts.net domain, not yours
Service down	Notice page or redirect, never a raw error	The browser's error page
What is reachable	One service	The private network; with Funnel, one service
TCP / UDP	Yes	Yes, out of the box
Needs a VPS	Yes: it is what keeps the traffic away from anyone else	No

If you want to reach your own machines, Tailscale. If you want someone else to open an address of yours without installing anything, this. And they live together fine: plenty of people run both.