Here it is. After countless requests to go opensource, I did it to make those people quiet. It worked.
It's already been a year and I still can't see any positives of it. This way I just made it easier for everyone to make a plugin as good, so people can stop using it and switch to something better.
Plugin can be compiled using maven.
The source contains content of premium version as well. However, this must be activated by setting this line to return true.
Free version
Spigot (releases): https://www.spigotmc.org/resources/57806/
Pre-releases https://github.com/NEZNAMY/TAB/releases
Premium version
Polymart (releases): https://polymart.org/resource/484
MC-Market (releases): https://www.mc-market.org/resources/14009/
Pre-releases on discord for verified buyers
Bukkit bridge https://www.spigotmc.org/resources/83966/
Wiki https://github.com/NEZNAMY/TAB/wiki
Discord invite link: https://discord.gg/EaSvdk6
Official release: https://www.spigotmc.org/resources/57806/
Pre-releases: https://github.com/NEZNAMY/TAB/releases
<repositories>
<repository>
<id>jitpack.io</id>
<url>https://jitpack.io</url>
</repository>
</repositories>
<dependencies>
<!-- TAB -->
<dependency>
<groupId>com.github.NEZNAMY</groupId>
<artifactId>TAB-API</artifactId>
<version>2.8.10</version>
</dependency>
</dependencies>