Here are a selection of Online Tools I have compiled
Hash Calculator
Here is a simple, web-based hash generator (the data does not leave your browser).
Base 64 Calculator
Here is a simple, web-based base64 encoder/decoder (the data does not leave your browser).
Message Encryption
Here is a simple, web-based encryption example using aes256 encryption technology (the data does not leave your browser).
Hex Calculator
Here is a simple, web-based hex encoder/decoder (the data does not leave your browser).