Chat rooms and forums

General

Name	Platform	Description
APL Orchard (Stack Exchange)	Stack Exchange	Chat room for learning, teaching, asking, golfing and discussing APL, predominantly Dyalog APL.
APL Farm (Discord, Matrix)	Matrix/Discord	Matrix space; chat rooms about array programming — many of them linked to the corresponding Discord channels.
#apl	Libera Chat	IRC chat room.
r/apljk	Reddit	Subreddit for talk about APL, J, K/Q and kdb+, and all things that relate to array languages.
r/apl	Reddit	Subreddit with less activity, but is exclusively for APL.
comp.lang.apl	Google Groups	Newsgroup for discussion about APL.
APL Dinosaurs	Facebook	Primarily for those retired from programming but can't forget their love of APL.
Array programming	fast.ai	General discussions, showcases, and threads relating to the ongoing APL study group

Name	Platform	Dialect
APLDN (APL2000 Developer Network Forum)	bulletin board	APL+Win
Support forum for APLX	bulletin board	APLX
Dyalog Forums	bulletin board	Dyalog APL
jsoftware.com Mailing Lists	mailing lists	J
K Language Wiki	wiki	K
KX Community	custom	Q
K Tree	Stack Exchange	Primarily ngn/k and other K6 variants
Shakti Group	Google Groups	Shakti K
NARS2000 Forum	wiki	NARS2000
BQN Matrix Chat	chat	BQN

APL community [edit]
Conferences and activities	Advent of Code ∙ APL Campfire ∙ APL Cultivation ∙ APL Meetup (Portuguese) ∙ APL Show ∙ APL Problem Solving Competition ∙ APL Quest ∙ APL Seeds ∙ Array Cast ∙ BAA sessions ∙ Code golf ∙ Dyalog user meetings ∙ Dyalog webinars ∙ Iverson Award ∙ Sharing code
Chat rooms and forums	APL Farm ∙ APL Orchard
User groups	APL Borealis (Canada) ∙ APL et J (France) ∙ APL Germany (terminology) ∙ APL ∊ BCN (Spain) ∙ BAA (UK) ∙ FinnAPL (Finland) ∙ JAPLA (Japan) ∙ SAUG (Switzerland) ∙ SIGAPL (USA) ∙ SwedAPL (Sweden) ∙ Tokyo APL/J/K Meetup (Japan)
People	Phil Abrams ∙ Brian Becker ∙ Bob Bernecky ∙ Larry Breed ∙ Charles Brenner ∙ Jim Brown ∙ Adám Brudzewsky ∙ Gitte Christensen ∙ Peter Donnelly ∙ John Earnest ∙ Adin Falkoff ∙ Garth Foster ∙ Lib Gibson ∙ Aaron Hsu ∙ Roger Hui ∙ Ken Iverson ∙ Morten Kromberg ∙ Marshall Lochbaum ∙ Eugene McDonnell ∙ Jon McGrew ∙ Donald McIntyre ∙ Roger Moore ∙ Alan Perlis ∙ Henry Rich ∙ Al Rose ∙ William Rutiser ∙ John Scholes ∙ Ian Sharp ∙ Bob Smith ∙ Geoff Streeter ∙ Roy Sykes ∙ Arthur Whitney
Other	APL Quote Quad ∙ APL Wiki ∙ Blogs ∙ Books ∙ Case studies ∙ Famous APL users ∙ Humour ∙ Jobs ∙ Merchandise ∙ Papers ∙ Podcasts ∙ TryAPL ∙ Try It Online ∙ Video channels