Here’s a collection of all the ROMs that are available for the Nexus 4. List will be updated as of when more ROMs are released!
AOKP
Android Open Kang Project (Thread Closed)
by jackpham[ROM] AOKP 4.2.1 – mako preview builds [DEC/27/2012]
by AOKP_ROM[UNOFFICIAL]AOKP 4.2.1 [DEC/19/2012]
by shalkith
AOSP
CyanogenMod 10.1 Official Nightlies
by CyanogenModCyanogenMod 10.1 Unofficial [NOV/25/2012] (Thread Closed)
by KonstantinKellerK1LLr0m (unofficial) [DEC/31/2012]
by m3dd0gLIQUIDSMOOTH – Alpha 7 [DEC/13/2012]
by tspderek
LIQUIDSMOOTH – Beta 1B [DEC/25/2012]
by toxicthunder
MiNCO v6 (Minooch + Franco) [DEC/22/2012]
by minooch
MMuzzyROM for Mako [DEC/30/2012]
by mmuzzy
ParanoidAndroid 2.99 beta9 [DEC/25/2012]
by molesarecoming
Project Cold Fusion – 003 – [DEC/20/2012]
by KonstantinKeller
RasBeanJelly [ANDROID 4.2.1_R1 JOP40D]
by rascarlo
[ROM][AOSP-4.2.1][SR1] OFFICIAL codefireX 4.2 Builds
by synergye
SlimBean – Beta 1 [DEC/22/2012]
by krarvind
Xylon – 014.2 – [DEC/29/2012]
by benjamin.j.goodwin
CM BASED
Dark Jelly N4 Edition Build 1[DEC/31/2012]
by XXMrHyde
JellyBeer v3.52 (unofficial) [DEC/31/2012]
by benjamin.j.goodwin
Jellybro [CM10.1]
by Euroskank
Project Cold Fusion – 4.2.1 [DEC/04/2012]
by KonstantinKeller
STOCK
Brainmaster’s Stock & Lucid ROM 4.2.1 [DEC/08/2012]
by brainmaster
Jellytime- Version 5
by randomblame
MoDaCo Jr5 – 4.2.1
by paulobrien
Motorola Blur UI – Alpha 1
by weeo
PURE GOOGLE NEXUS™©DemolitioN4©
by klander
RomAur v2.2 [DEC/06/2012]
by auras76
[ROM][JB][JOP40C] Nexus 4 4.2.1 stock (deodexed, rooted, busybox)
by fireb33
[ROM][JB][JOP40D] 4.2.1 stock (deodexed, rooted, busybox)
by Geo411m
(ROM)JellyBean JOP40D [DEC/23/2012]
by maddoggin