A Secure DiaryProgram written in Java and using the bouncycastle JCE Cryptograpic library. It uses a combination of BlowFish and TripleDES (XORed) to encrypt Diary entries.
Thoughts is an electronic journal/diaryprogram based on the .NET framework (C#). It allows entries to be saved locally and/or remotely via web service or directly to a database. The entries can also be encrypted prior to saving.