How do you open .BIG files?

[Firehawk17]

Title says it all. How do you open these kinds of files?

[m4dn3ss]

OS Big Editor (Google it)

[CnC_Fin]

I usually use OS Big Editor, or Final BIG.

OS Big is good for C&C3, RA3 and C&C4 .big files, whereas Final Big is good for Generals and Zero Hour.

[Dukat863]

XCC Mixer can do it. But i use gaup plugin for total commander.

[PsionicAssassin]

I recommend Final Big if you are adding/editing the big file.
OS editor is good, but you can't add files.

Basically Final Big has good features but a bit buggy, OS editor has more user friendly interface.