Java Edition server software

A custom server is a Minecraft server that uses no derived code or components from the original Minecraft Classic or Survival server software, thus they are 100% free of Mojang code and restrictions. They are made as alternatives to the original server to add extra features, such as gameplay changes or to make fixes such as lag optimization. Custom servers have to stay updated to the current version of the client due to possible protocol changes, note this only applies to Beta.

Features

Custom servers have a range of features, some of which are common between them. These features extend the functionality of gameplay, administration or even many other things never thought of before in the original server.

Multiworld

Multiworld is the name of a most likely unintentional feature of the Minecraft client which can be used by a custom server. The first server to have this feature was Myne.

Usually on these servers they have a main world with portals to direct you to these other maps or by a command. They can also create new worlds and assign various properties to the world, for example; restrictions on who may enter or build on certain worlds. This makes it possible to show old worlds while still having maps for the public to build on. This can also grant more private areas to prevent grief.

Color codes

Custom servers usually take advantage of color codes (sometimes allowing players to input them with a percent instead of a ampersand)
Messages sent from the server to the client can contain color codes, which allow coloring of text for various purposes. An ampersand followed by a hex digit in the message tells the client to switch colors while displaying text.

Color coding at the start of the message will only work if the player ID byte is less than 127. If it's 127 or higher, the game automatically adds &e before the message, making it yellow. However, color codes after the first character still work. If you use an ID below 127, it doesn't add a color code, so the ones you use will work.

It is important to note that an ampersand at the end of a message that is not followed by a hex digit will crash all clients that receive it, so it is a must to sanitize chat messages received from clients.

Hex digit to color mapping

Sample	Code	Name	Foreground			Background
			R	G	B	R	G	B
	&0 - %0	Black	0	0	0	0	0	0
	&1 - %1	Dark Blue	0	0	191	0	0	47
	&2 - %2	Dark Green	0	191	0	0	47	0
	&3 - %3	Dark Teal	0	191	191	0	47	47
	&4 - %4	Dark Red	191	0	0	47	0	0
	&5 - %5	Purple	191	0	191	47	0	47
	&6 - %6	Gold	191	191	0	47	47	0
	&7 - %7	Gray	191	191	191	47	47	47
	&8 - %8	Dark Gray	64	64	64	16	16	16
	&9 - %9	Blue	64	64	255	16	16	63
	&a - %a	Bright Green	64	255	64	16	63	16
	&b - %b	Teal	64	255	255	16	63	63
	&c - %c	Red	255	64	64	63	16	16
	&d - %d	Pink	255	64	255	63	16	63
	&e - %e	Yellow	255	255	64	63	63	16
	&f - %f	White	255	255	255	63	63	63

Comparison

This is a comparison of available custom servers for both versions of Minecraft.

Would you like your server to be added to the list?
You need to have one public release, then go here for submission.

Beta

This version of Minecraft only includes SMP at this time.

Metadata

Name	Developer(s)	Language	License	Platform
Bravo	MostAwesomeDude	Python 2.6	MIT/X11
C#raft	ementalo, spazzarama Smjert, Deniska(Gremlin13)	C#	AGPL3
Chunky Monkey	huin, agon, nictuku	Go	MIT
craftd	Founders (kev009, meh), PrecipiceGames (HACKhalo2, dotblank, alyawn), other contributors	C99	Simplified BSD
Erlcraft	Scott Brooks	Erlang	Open source
Glowstone	SpaceManiac	Java	MIT
Lightstone	Graham Edgecombe	Java	MIT
MCServer	FakeTruth	C++	Closed source
Mineserver	Fador, Nredor, Psoden, deoxxa, ...	C++	New BSD
Myne2	aera, iKJames	Python 2.6	Simplified BSD
OpenMC	Xinnx	C#	GPL v3

Features

Name	Scripting	IRC	Multiworld	Physics	Entities	Biomes
Bravo	Python	Yes	Yes	Yes	Yes	Yes
C#raft	C# Java VisualBasic	Yes	Planned	Yes	Yes	Yes
Chunky Monkey	Unknown	No	Planned	Planned	Partial	No
craftd	Many	Planned	No	Yes	Planned	No
Erlcraft	No	No	No	No	No	No
Glowstone	Bukkit	Plugin	Yes	Planned	Partial	No
Lightstone	Ruby	No	Planned	Planned	Partial	No
MCServer	Lua	No	Planned	Partial	Partial	No
Mineserver	Many Mostly C++	Plugin	Yes	Yes	Partial	Yes
Myne2	Python	No	No	No	Partial	No
OpenMC	.NET	No	No	No	Yes	No

See also

• Minecraft Coalition: Server List

Classic

This version of Minecraft only includes Creative Multiplayer.
Only include developers that contribute to the source

Template:NotBeta

Metadata

Name	Basis	Developer(s)	Language	License	Platform
blockBox	iCraft	tyteen4a03	Python 2.6	BSD 2-Clause modified
D3	None	Dadido3	PureBasic	Closed source
fCraft	None	fragmer	C#	MIT
iCraft	Myne	The Archives and iCraft Team	Python 2.6	CC by-nc-sa 3.0 Closed source
LuaCraft	MinerCPP	TwdTwd, dag10, Unison	C++	MIT
MCForge	MCLawl	Dmitchell94, jordanneil23, Fenderrock87, Edh649, Philipdenseje, Gamezgalaxy, EricKilla, The_Legacy, Herocane, Headdetect, Merlin33069, SilentNeeb, Jasonbay13, Cazzar, Snowl, Techjar, Nerketur, AnthonyANI	C#	GPL v3/ECL v2
MCSharp	Obsidian	Voziv	C#	ECL v2
MCStorm	MCLawl	Woldoc, Prince32780, Saphiree	C#	Closed source
MCBleh	MCLawl	BlehWareSD Team; Abby999, xMetalLover, tbrewda36	C#	Closed source
MCQuai	MCSharp	Quaisaq, Jesbus	C#	Closed source
MinerCPP	None	vLK, Unison, TwdTwd	C++	Open source
Myne	None	aera	Python 2.6	Public domain
Obsidian	None	copyboy	C#	Public domain
OpenCraft	None	Graham Edgecombe	Java	New BSD
CakeCraft	MCLawl	MrCakeCreator (More devs needed email me at mrcakecreator@gmail.com)	C#	Closed source

Features

Name	Scripting	GUI	IRC	Multiworld	Custom Blocks	Physics	Entities	Block Tracking
blockBox	Python	Planned	Yes	Yes	Yes	Yes	Planned	Planned
D3	Lua	No	No	Yes	Yes	Yes	Partial	Yes
fCraft	Binary	Yes	Yes	Yes	Planned	Planned	No	Planned
iCraft	Python	No	Yes	Yes	Yes	Yes	Yes	No
LuaCraft	Lua	No	No	Yes	Yes	Yes	No	No
MCForge	C#	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MCLawl	C#	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MCSharp	No	Yes	Yes	Yes	Yes	Yes	No	No
MCStorm	C#	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MCBleh	C#	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MCQuai	No	Yes	Yes	Yes	Yes	Yes	No	Yes
MinerCPP	Lua	No	No	No	No	Yes	No	No
Myne	Python	No	Yes	Yes	Yes	Yes	No	No
Obsidian	Yes	No	No	No	Yes	Yes	No	No
OpenCraft	Jython	Planned	No	Yes	Yes	Yes	No	No
CakeCraft	C#	Yes	Yes	Yes	Yes	Yes	Yes	Yes