Avalanche is a fork of Waterfall used by Pl3xCraft.
Downloads can be obtained from Pl3x's Jenkins server.
Purpur API maven dependency:
<dependency>
<groupId>net.pl3x.avalanche</groupId>
<artifactId>avalanche-api</artifactId>
<version>1.16-R0.1-SNAPSHOT</version>
<scope>provided</scope>
</dependency>
<repository>
<id>avalanche</id>
<url>https://repo.pl3x.net/</url>
</repository>