At the risk of splintering interest: Algo[1] and Streisand[2] are two popular open source projects that do nearly identical things. Both also have the advantage of supporting a wide variety of cloud providers by default. Algo installs the absolute minimum needed to get you online with a well-configured VPN; Streisand comes with a whole bunch of bells and whistles (including some that are easy to misconfigure).
FD: My employer maintains Algo.
[1]: https://github.com/trailofbits/algo
[2]: https://github.com/StreisandEffect/streisand