UPDATE 2024: Get a new version here: https://github.com/ivoras/EncryptedNotepad2
"Encrypted Notepad" does only one thing, but aims to do it perfectly - a Notepad-like simple text editor where files are saved (and later loaded) encrypted with industrial strength algorithms. Available both for the desktop (as a Java application) and on Android.
Unencrypted data is never stored on-disk. Source is released (on SourceForge) under the BSD license.
TextConverter is a graphical text editor allowing the user to encrypt/decrypt the textual contents displayed on the screen using a 128-bit AES (Advanced Encryption Standard) cipher.
A very simple file encryption tool. Release 1 is a text editor that saves encrypted files. Release 1.1 will include the ability to convert any file, even binary, to a GEF (Gulosh Encrypted File). Release 2.0 brings the strong encryption into play.
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jCryptPad stores text informationen hierarchical, e.g. passwords, important texts etc. The data is saved in a encrypted xml file. Encryption is done with the AES algorithm. Additionally a password generator and a text encryption editor is also included.
KeyStone is an editor program for Java keystore files, licensed under the GPL. KeyStone may help make your life easier if you're working with symmetric cryptography in Java.
Suite of services and tools for handling PKI requirements. The initial list of programs contains: 1) a viewer/encoding converter for X.509 certificates, 2) a viewer/editor/generator for PKCS#7 and 3) a viewer/editor/generator for various keystores types.