General sites:
Gate-keepers Official site(Japanese)
Gatekeepers HQ
A.E.G.I.S. Database
AEGIS HQ
Affirmative! AEGIS
Gatekeepers: Episode Keeper
Character Shrines:
Ruriko Shrine
Contemplation : Megumi
šRurikoš
My Kaoru-Chan
Couple Shrines:
Black Gate : Kageyama & Megumi
Inevitable : Shun x Ruriko
Cliques
Support Megumi
Gatekeepers' Cavern: A Keepers' List
operation:Rurippe
Mailing Lists
Tategami Highschool (Club)
Gatekeepers' Club
Ruriko Ikusawa Fan Club
Megumi Kurogane Fan Club
Member's Sites:
Zandra
Alllisana
Mishta
Takami Akari
Makoto Ken Shishigaru
stella 'frozen petals'
Aqua Chaos