[Galaxy S II General] GreekDragon:
Huge thanks to [MENTION=4232856]GaboWinter[/MENTION] , the originator of this index thread. I will continue to update the index and build on his work :)

Hello community! Welcome to the ROMs index from the Original Android and Android Development Forums.

Please remember read all the information (the OP & first posts, and last 5-10 pages) of the threads of the ROM that you choose, that's the best way to avoid any issue.

Index Structure​

The index is divided in five categories:

-Marshmallow

-Lollipop

-KitKat

-Jelly Bean

-Samsung Base

-MIUI

« Useful Links

INDEX of ROMs [Original Android Development Forum]

INDEX of Kernels [Original Android & Android Development Forums]

[INDEX of GUIDES/TUTORIALS] SGS2 GT-I9100

⊗ Marshmallow ⊗​

[ROM][I9100] CyanogenMod 13 by Lysergic Acid

[ROM][6.0.1]XPerience-10.0.1_r43 by aniket.lamba

[ROM] AICP - 11.0 - MM 6.0.1_r46 i9100 Official Nightlys

by Trafalgar Square

RESURRECTION REMIX M by GreekDragon

Bliss M by GreekDragon

[ROM][6.0.1][OFFICIAL] Team OctOs Oct-M [WEEKLIES][i9100]

by aniket.lamba

[ROM][6.0.1][OFFICIAL]XOSP by GreekDragon

[ROM][I9100][MM][6.0.1][Linaro][SaberMod] CyanogenMod 13

by markox86

[ROM][6.0.1][AOSPB] Tipsy OS - Geuze [08/06] (i9100)

by aniket.lamba

[ROM][6.0.1] [DIRTY-UNICORNS-v10.1] [DIRTY-DEEDS] [OC/UV] [OTA]

by arnab

[ROM][6.0.1][i9100][OFFICIAL] Android Open Kang Project (AOKP)

bemolx

[ROM][6.0.1] Liquid Dark (i9100) by aniket.lamba

[ROM]Slim6 Marshmallow by warrior1208

⊗ Lollipop ⊗​

[ROM][5.1.1][AOSP][FINAL][UNOFFICAL] XPerience-9.1.1_r24 by aniket.lamba

[ROM][5.1.1][Seine][UNOFFICIAL] CyanogenMod Unofficial Builds by CNBLACK

[ROM]UBER][FINAL][OPTIMISED][5.1.1] AOSP+RRO/Layers for Galaxy S2 by aniket.lamba

[ROM][i9100] CarbonROM [OFFICIAL][5.1.1] by myself5

Minimal OS by GreekDragon

[ROM][5.1.1]SlimLP - Build [UNOFFICIAL] by warrior1208

[OFFICIAL][ROM][5.1.1_r24][Team-Razor RC2.0 [i9100] by aniket.lamba

[ROM] Fusion v6.0 - LP5.1.1 (i9100) by aniket.lamba

[ROM][5.1.1]Euphoria OS lollipop [Unofficial][I9100] by sai24

[ROM][I9100][LP][5.1.1][Linaro][SaberMod] CyanogenMod 12.1 by Markox89

[ROM][5.1.1][OFFICIAL][Infinitive-OS][V1.1] by Vivek_Neel

[ROM] [5.1.1] OmniRom 5.1 HOMEMADE by asimovi

[ROM][5.1.1][SLIM][UNOFFICAL] TipsyOS by aniket.lamba

[ROM][5.1.1][UNOFFICAL] OwnROM by aniket.lamba

[ROM][5.1.1][UNOFFICAL] Oct OS L

by aniket.lamba

[ROM][5.1.1_r6][OPTIMIZED][i9100]RESURRECTION REMIX[GRAPHITE][-O3][CM12.1] by varund7726

[ROM][5.1.1] [LiquidSmooth v4.1] [Unofficial-Builds] [LINARO/UBER] [OTA] by arnab

[ROM][5.1.1]Nameless Rom lollipop [Unofficial] [I9100] by sai24

[ROM][5.1.1] [DIRTY-UNICORNS v9.4] [Unofficial-Builds] [SABERMOD] [OTA] by arnab

[ROM][5.1.1][UNOFFICIAL] GZR Validus Rom by aniket.lamba

[ROM][5.1.1][UNOFFICAL] Candy5 by by aniket.lamba

[5.1.1][STABLE] Unofficial CyanogenOS 12.1S for Galaxy S2 by FaserF

[ROM][5.1.1] Paranoid Android [UNOFFICIAL] by warrior1208

[ROM][5.1.1][UNOFFICAL] Team EOS - The Revival by aniket.lamba

[ROM][5.1.1]SOKP lollipop [I9100] by sai24

[ROM][5.1.1][UBER/Full O3] BlissPop[i9100] by koolkunz

[ROM][5.1.1] SlimSaber - [UNOFFICIAL SlimLP] by warrior1208

[ROM][5.1.1][UNOFFICAL] Team UB by aniket.lamba

[ROM][5.1.1][UNOFFICAL] Own ROM Alpha by aniket.lamba

[ROM] [PREVIEW] [5.1.1] CodeROM 5.1.1 [GT-I9100] by jeffreyvh

[ROM][i9100][5.1.1]Mechanical Android 0.4 by Niropa

[ROM][5.1.1][UNOFFICAL] Cyanide L by aniket.lamba

[ROM][5.1.1] [MoKee] [Unofficial-Builds] [SABERMOD] [OTA] by arnab

[ROM][5.0.2] Euphoria-OS 1.0 I9100 Unofficial by sooti

[ROM][SaberMod][5.0.2]Beanstalk I9100 Unofficial by sooti

[ROM][5.0.2][SaberMOD][Official]Hazy ROM Alpha2 I9100 by sooti

[ROM][GS2 I9100][LP 5.0.2] Roshnaie-ROM [End of Darkness][BETA] by ab-samy

[UNOFFICIAL][ROM][i9100]Fusion v5.0 sooti

[5.0][AOSP][wip] CodeROM 5.0 by LollipopS2 by jeffreyvh

[UNOFFICIAL][ROM][TESTING] [5.0.1] [I9100] NamelessROM by sooti