you can run netmaker in a lightsail VPS. Similar functionality / UI experience to tailscale but self-hosted
Just to clarify this take, the source is available on Github [0] but licensed under the highly controversial Server Side Public License [1][2].
This license was originally written by MongoDB. They applied to get it recognised as an open source license with the OSI but later withdrew the application as it became clear it wouldn't have been approved.
OSI explained in 2019 [3] why it didn't consider the license to be open source.
[0] https://github.com/gravitl/netmaker
[1] https://github.com/gravitl/netmaker/blob/master/LICENSE.txt
[2] https://en.wikipedia.org/wiki/Server_Side_Public_License