Yellowpipe - Encrypter/Decrypter, Encode / decode: Base64, ASCII, Binary, Hex, DES, MD5, SHA1, Bruteforce, ROT-13, URL encodeThis program let you encode/decode or encrypt/decrypt your documents in various formats such as: ASCSII, Binary, Base 64, Hex, Caesar Bruteforce, MD5, SHA-1, HTML Entities. See below the complete list.I have been using this to decode some strange Entities in old HTML.