I made a very good Auth plugin like AuthMe (for Bukkit Servers). I want to publish it but I don't know if I am allowed to do it.
Sadly, you can't. All because @Glitchmaster_PE messed up his. He didn't use the strtolower function before he saved the usernames, so all you had to do to hack an admins account was change the capitalization. Example: "Steve" is different than "steve". You can't publish a plugin that's at all similar to a plugin with the orange "Official" tag.
Ok. Thanks for the answer I will make a PocketMine section on my website. I'm currently working on it. This requires a lot of time but I think that the website will be done in 2 weeks. All depends on how much free time I have. I have a lot of homework and usually I am free only on Saturday and Sunday. You will find all game resources (maps, mods, plugins...) on the website.
@shoghicp recommends everyone who wants to improve auth plugins to make pull requests on SimpleAuth at https://github.com/PocketMine/SimpleAuth, not to make new ones.