Chrono Trigger (SNES)

Utilities

Temporal Flux, written using the Microsoft .NET framework, is the principal Chrono Trigger hacking utility. It is available at Geiger's Crypt. There are also a few hacking documents available there.
CTEP - Chrono Trigger Editor Companion (utility), Designed to be a companion to Geiger's/Evil Peer's Editor. It edits some things his does not. BlitzKrieg Innovations main site(formerly JCE3000GT-Soft)
Chronotools, Translation utility. Bisqwit's chronotools page

Complete:
Pera Wish

Partial:

Prior to Temporal Flux's release, a teaser "trailer" was released to keep the community guessing as to what exactly TF was.
Chrono Trigger: Crimson Echoes is a big hack that is in the works. A short demo has been released.
Chrono Trigger - Time's Illusion is another big hack that is in the works. There is no date for a demo as of yet.
A minihack called Chrono Trigger Coliseum has been released, created using the Temporal Flux utility.

Bisqwit made a Finnish translation for the game.
Manuloewe translated this game into German. Version 1.01 can be downloaded here.
GreekRoms has a partial translation for this game into Greek. It is available for download here.
SadNES cITy has translated this game into Italian. It is available for download here.
CTTT has a partial translation for this game into Polish. It is available for download here.
CBT translated this game into Portuguese. It is available for download here.
DarknessSavior has started an English retranslation.