There is a small freeware Unicode outliner with BlowFish encryption.

Its features include:
- Very little size of occupied memory.
- Simple interface.
- Compact databases.
- Instant flushing of entered data. It eliminates needs to press 'Save' button periodically.
- Secure storage for notes using BlowFish algorithm.
- Unicode support.

With this outliner you can store various information into tree-like structure with folders and notes. You can use strong BlowFish encryption to secure your data. The encryption scheme requires just one master password for each file. However you can use encryption only on some individual folder/notes. The content of these folders/notes cant be accessed without the entering master password.
Full Unicode support gives you possibility to store information on various languages easily.