With this application you can encrypt texts or files and chat with friends.
You can download a early Android version of the chat client from here:
https://drive.google.com/uc?export=download&id=0BwePHaWdtoMweWRyMExqbHZyUEk
Hint: I started this project because i have fun to write java apps. This app is not professional. I don´t recommend using this to encrypt very important data (for example of your company ...).
Underground IM is a free Java Instant Messaging solution.
Underground IM is a free Java Instant Messaging solution. Both a client and a server are available. Underground IM is open source software distributed free of charge under the terms of the GNU General Public License.
*Public Server: 64.94.101.216:5632
SecureIM is an instant message client who uses digital certificates and PKI.The client application connects to a WildfireSIM server.SIM do a digital signature for login to the server using a user certificate.Also uses PKI to encrypt and decrypt messages