Are there other open source VPN's like OpenVPN?

VPN
1

If yes, are they any good?

2

How about https://www.wireguard.com/?

3

Here is list of 10 best open source VPN projects. Best one would be OpenVPN. As an alternative would be to choose Pritunl, SoftEther VPN, StrongSwan and Wireguard.

4

Wireleap is a new one focusing on network traffic censorship circumvention.

5

Pritunl supports OpenVPN, IPsec and wireguard as well.

6

Wireguard is awesome. The configuration compared to openvpn is a bless.