Maintainers

This page maps Swift compiler subsystems to the people who own them. Two data sources:

• CODEOWNERS — CODE_OWNERS.TXT in the repo root. Apple-designated gatekeepers.
• Recent contributors — top names in git log --since="90 days ago" for the corresponding directory.

Names are GitHub usernames where available. Entries are sorted by area, then by surname within CODE_OWNERS.TXT. Bot accounts (none in this repo) would be excluded.

Subsystem owners

Subsystem	Official owners (CODE_OWNERS.TXT)	Recent contributors (last 90 days)
AST, Basic, Parse, Sema	DougGregor	xedin, hborla, hamishknight, DougGregor
Generics, Reflection, SwiftRemoteMirror	slavapestov	slavapestov
SIL, SILGen, "everything else in Swift"	jckarter	jckarter, kavon, atrick
SILOptimizer, Swift Benchmark Suite	eeckstein	eeckstein, meg-gupta, atrick
IRGen, Runtime, Demangler	rjmccall	rjmccall, mikeash
ClangImporter, Serialization, PrintAsClang, Driver, Frontend	jrose-apple	hborla, hamishknight, gribozavr, zoecarver
Concurrency runtime	(no formal owner listed)	ktoso, FranzBusch, kavon
IDE, Index, SourceKit, swift-ide-test	akyrtzi	akyrtzi, ahoppen, bnbarham
Markup, Migrator	nkcsgexi	nkcsgexi
SymbolGraphGen	QuietMisdreavus	QuietMisdreavus
Debug info	adrian-prantl	adrian-prantl
SIL diagnostics passes, sanitizers	AnnaZaks	AnnaZaks
Standard library	airspeedswift	airspeedswift, glessard, lorentey
Foundation overlay	parkera	(lives in swift-corelibs-foundation)
Dispatch overlay	das	(lives in swift-corelibs-libdispatch)
XCTest overlay	briancroom	(lives in swift-corelibs-xctest)
Apple-platform non-corelibs overlays	moiseev	moiseev
Build system / Windows / cross-compile	(no formal owner)	compnerd, etcwilde, tkientzle

Recent activity (top 30 contributors, last 90 days)

Author	Commits
Slava Pestov	174
Pavel Yaskevich	164
Hamish Knight	153
Erik Eckstein	144
Saleem Abdulrasool	124
Allan Shortlidge	124
Henrik G. Olsson	112
Michael Gottesman	111
Kavon Farvardin	100
Meghana Gupta	94
Doug Gregor	87
Alastair Houghton	81
John Hui	69
Steven Wu	62
Artem Chikin	47
Andrew Trick	47
Ramon Asuncion	44
Alejandro Alonso	41
Aidan Hall	40
Konrad ktoso Malawski	33
Egor Zhdan	32
Aviva Ruben	32
Konrad Malawski	29
Jamie	29
Gábor Horváth	29
Anthony Latsis	29
Guillaume Lessard	27
Gabor Horvath	27
Alexis Laferrière	26
Tim Kientzle	25

Where to ask

• General compiler questions — Swift forums, #development and #compiler categories.
• Swift Evolution / language design — Swift Evolution forums.
• Bugs — GitHub Issues.
• Sensitive / security — see SECURITY.md or Apple's security route for binary-shipping product issues.