Comparing Custom Firmwares

Features	Stock Atmosphere	Kosmos	ReinX	SXOS	Notes
Free	✓	✓	✓	x (~$30 USD)
Open Source	✓	✓	✓	x
Firmware 9.1.0+ Support	✓	✓	x	✓	ReiNX is DEAD Project now. ReiNX have not been updated since 8.1.0 :(
Homebrew Support	✓	✓	✓	?	Be aware: Many homebrew app authors do not support sxos.
Supports Custom Sysmodules	✓	✓	✓	✓	not all sysmodules will work on sxos.
Realtime Cheat Engine	✓	✓	✓	✓	sxos have laggy cheat engine. it lags game with cheats enabled.
Support Game Modding	✓	✓	✓	✓
Custom Themes	✓	✓	✓	✓	need to add a fix for lock screen themes on sxos
Custom boot screens	✓	✓	✓	x	you cannot change boot screen on sxos at all.
FS Patches	✓	✓	✓	✓
ES Patches	✓	✓	✓	✓	Atmosphere & Kosmos Sigpatches must be installed manually
Configuration Tools	x	✓	✓	✓
Reboot to Payload	✓	✓	✓	✓
Proper Shutdown w/ AutoRCM	✓	✓	x	x
Button Remapping	✓	✓	?	x	Using hid-mitm.
Third-party controller support	✓	✓	x	✓	sys-con or hid-mitm
emuNAND/emuMMC	✓	✓	✓	✓
XCI Loading/Mounting	x	x	x	✓	XCIs can be converted to NSP for other CFWs
external hard drive support	x	x	x	✓	external drive support is being worked on for atmosphere right now.
Fast on updating code when new switch fw is out	✓	✓	x	✓	ReiNX have not been updated since 8.1.0 :(
Relevant Guide	Here	homebrew.guide	reinx.guide	sx.xecuter.com

✓ - Supported

? - Partial or incomplete support

✖ - No Support