Is there an alternative to TrueCrypt?

Episode 1100 (2:18:17)

John from New Jersey

John wants to know if there's a cross platform alternative to TrueCrypt since development of it ended. Leo says that BitLocker is Microsoft's file vault, and Apple's is called FileVault. Both work great, but they aren't cross platform. Leo says that TrueCrypt is still around, but that the writer of it allegedly took to the Internet and said it wasn't safe anymore. It's been audited and so far seems to still be legit. So who knows? Leo doesn't know of any open source options anymore. BitLocker is a good alternative.

Here's an article about the demise of TrueCrypt and it offers some suggestions. AlternativeTO also has some suggestions.