c4.tf ... why are you here?

room.c4.tf
Privately share files and view media together in synchronized rooms.

qh.c4.tf
Host files of any size privately within your browser.
The server does not store your files, it is only an intermediary for transfers.

friendzone.c4.tf
Easily obtain a publicly reachable address for your local Bukkit server with the Friendzone plugin.
(c4.tf is the default intermediary server that will tunnel external connections to you.)

gw.c4.tf
A set of composable emojis to embed in messages, for example in Discord

c4.tf/rnd
A cryptographically secure pseudorandom data generation app

c4.tf/rsa
A visual tool for raw RSA encryption (to be relocated)

c4.tf/myip
Display the connecting IPv4 & IPv6.