Maintainers

Subsystem ownership and recent activity. Two data sources are used:

• The single-line CODEOWNERS file, which assigns the entire repo to @AUTOMATIC1111.
• Git history (git log -- <path>), filtered to recent committers (last 12 months of activity, ending July 2024) and excluding bot accounts.

The "Recent contributors" column is informational — it indicates who has been active around the area, not who is officially responsible.

Subsystem	Path(s)	CODEOWNERS	Recent contributors	Last activity
Top-level boot	launch.py, webui.py, webui-*.sh/.bat	@AUTOMATIC1111	AUTOMATIC1111, w-e-w	Jul 2024
Launch / pip glue	modules/launch_utils.py, modules/initialize.py, modules/initialize_util.py	@AUTOMATIC1111	AUTOMATIC1111, light-and-ray, w-e-w	Jul 2024
Processing pipeline	modules/processing.py, modules/processing_scripts/	@AUTOMATIC1111	AUTOMATIC1111, w-e-w, catboxanon, Kohaku-Blueleaf	Jul 2024
UI top-level	modules/ui.py, modules/ui_*.py	@AUTOMATIC1111	AUTOMATIC1111, w-e-w, missionfloyd, light-and-ray	Jul 2024
Models / checkpoints	modules/sd_models*.py, modules/sd_vae.py, modules/sd_unet.py	@AUTOMATIC1111	AUTOMATIC1111, brkirch, w-e-w, Aarni Koskela	Jul 2024
SD hijack	modules/sd_hijack*.py	@AUTOMATIC1111	AUTOMATIC1111, brkirch, Kohaku-Blueleaf, Aarni Koskela	Jun 2024
Samplers	modules/sd_samplers*.py, modules/sd_schedulers.py	@AUTOMATIC1111	AUTOMATIC1111, Kohaku-Blueleaf, brkirch, catboxanon, v0xie	Jul 2024
Scripts / extensions	modules/scripts.py, modules/extensions.py, modules/script_callbacks.py	@AUTOMATIC1111	AUTOMATIC1111, w-e-w, Aarni Koskela, light-and-ray	Jul 2024
Extra networks framework	modules/extra_networks.py, modules/ui_extra_networks*.py	@AUTOMATIC1111	AUTOMATIC1111, missionfloyd, w-e-w, Kohaku-Blueleaf	Jul 2024
Lora / LyCORIS	extensions-builtin/Lora/	@AUTOMATIC1111	AUTOMATIC1111, Kohaku-Blueleaf, w-e-w	Jul 2024
Textual inversion	modules/textual_inversion/	@AUTOMATIC1111	AUTOMATIC1111, DepFA, AngelBottomless	2023
Hypernetworks	modules/hypernetworks/	@AUTOMATIC1111	(deprecated; few changes)	2023
Postprocessing	modules/postprocessing.py, modules/face_restoration*.py, modules/upscaler*.py	@AUTOMATIC1111	AUTOMATIC1111, Aarni Koskela, w-e-w, light-and-ray	Jul 2024
API	modules/api/	@AUTOMATIC1111	AUTOMATIC1111, Aarni Koskela, w-e-w, missionfloyd	Jul 2024
Built-in scripts	scripts/	@AUTOMATIC1111	AUTOMATIC1111, missionfloyd	Jul 2024
Built-in extensions	extensions-builtin/	@AUTOMATIC1111	AUTOMATIC1111, w-e-w, Kohaku-Blueleaf, light-and-ray, tfernd	Jul 2024
JavaScript / front-end	javascript/, script.js, style.css	@AUTOMATIC1111	AUTOMATIC1111, missionfloyd, w-e-w, light-and-ray	Jul 2024
Settings declarations	modules/shared_options.py	@AUTOMATIC1111	AUTOMATIC1111, w-e-w, light-and-ray	Jul 2024
CLI args	modules/cmd_args.py	@AUTOMATIC1111	AUTOMATIC1111, w-e-w	Jul 2024
Tests	test/	@AUTOMATIC1111	AUTOMATIC1111, Aarni Koskela	2024
CI	.github/workflows/	@AUTOMATIC1111	AUTOMATIC1111	2024

Top-of-history contributors

Across the entire ~7,700-commit history (deduplicated for the AUTOMATIC/AUTOMATIC1111 split):

Commits	Person	Notes
~3,500	AUTOMATIC1111	Sole CODEOWNER
314	w-e-w	Most prolific community contributor
168	DepFA	Especially active on training subsystems in 2022
155	Aarni Koskela	API and platform fixes
132	catboxanon	UI/quality-of-life fixes
121	Kohaku-Blueleaf	Lora/LyCORIS, sampler work
91	missionfloyd	UI tweaks
83	brkirch	Apple Silicon (MPS) support
82	C43H66N12O12S2	xFormers integration
66	Andray	UI improvements
60	Vladimir Mandic	Maintainer of the vladmandic/automatic fork; many cross-port fixes
57	Dynamic	Localizations / refactors
56	space-nuko	Quality-of-life features
55	yfszzx	Image browser extension origin

A further ~640 unique contributors have between 1 and 50 commits each. The repo's first commit was on 2022-08-22; the most recent commit on master is from 2024-07-27.