What happened to Aegisub website ?

[untymage]

I'm looking for all available functions (which statrs with {\ and end with}, But looks like the aegisub.org is down.

Is there any other documentation about all functions?

[Selur]

is http://plorkyeran.com/aegisub/ what you are looking for?
That is where the link in the videohelp download section points to under "Visit developer's site"

Appendix A: Style override codes over at http://www.tcax.org/docs/ass-specs.htm might be what you are looking for,..