What other open-source encryption applications are there other than TrueCrypt?

Question

Looking specifically for ones that provide cascaded or sequential encryption modes e.g. AES-Serpent-Twofish

Answer 1

Kruptos 2 is an easy-to-use 128/256-bit file encryption utility that allows you to secure any sensitive files stored on your PC or portable storage device. Kruptos 2 includes a file shredding utility, and the ability to generate self-decrypting files. Features and benefits: quick to download, simple to install. It is good for secure transportation of files on potable storage devices, such as portable hard drives, USB storage keys. Maintains the original files time and date details., and its freeware.,