Here is the whole story (Grab your snacks
)
Bukkit, originally made dinnerbone and grumm was small open source project. then a half year later mojang thought a plugin api was pretty cool so they hired the 4 main devs (they already hired dinnerbone and grumm) and bought bukkit. But becaues Bukkit was an open source project, what mojang did was illegal, they didn't tell anyone else except for the 4 devs they hired they bought bukkit. so basically mojang had people work on bukkit for them with no pay. (skip 2.5 years later) Mojang enforced there EULA, and the devs didn't like that so they tried to take down bukkit. Mojang stepped in and said that they didn't have the power to do that, dinnerbone stepped in and said he was gonna continue bukkit for 1.8 (happy ending right right?! WRONG) a giant contributor to bukkit "Wolverness" found that he was working for free, and he was working under a gpl license which states that anyone can use his code, but no one can claim it, so since mojang claimed it he town the bukkit project by legal actions. and since mojang secretly asked spigot for help Wolverness wasn't happy and took down spigot, so ya.
But not to fear Bukkit, spigot, and forge devs are working on a project called Sponge, which will be a fresh new plugin api that will avoid any dmca issues.
-Alfy

Bukkit, originally made dinnerbone and grumm was small open source project. then a half year later mojang thought a plugin api was pretty cool so they hired the 4 main devs (they already hired dinnerbone and grumm) and bought bukkit. But becaues Bukkit was an open source project, what mojang did was illegal, they didn't tell anyone else except for the 4 devs they hired they bought bukkit. so basically mojang had people work on bukkit for them with no pay. (skip 2.5 years later) Mojang enforced there EULA, and the devs didn't like that so they tried to take down bukkit. Mojang stepped in and said that they didn't have the power to do that, dinnerbone stepped in and said he was gonna continue bukkit for 1.8 (happy ending right right?! WRONG) a giant contributor to bukkit "Wolverness" found that he was working for free, and he was working under a gpl license which states that anyone can use his code, but no one can claim it, so since mojang claimed it he town the bukkit project by legal actions. and since mojang secretly asked spigot for help Wolverness wasn't happy and took down spigot, so ya.
But not to fear Bukkit, spigot, and forge devs are working on a project called Sponge, which will be a fresh new plugin api that will avoid any dmca issues.
-Alfy
