Similar to 馴れ合い_(2ちゃんねるカテゴリ)

.jo

.jobs

Jodi (art collective)

JSONP

.ke

Keenspot

.kh

.ki

.kn

.kr

.kw

.ky

.kz

.la

LAMP (software bundle)

Lang-8.com

.lb

Leet

.li

Link relation

Windows Live Personalized Experience

.lk

Locanto

Locator/Identifier Separation Protocol

Loopt