Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.
PhoneLeash: SMS/MMS forwarding - PhoneLeash: SMS/MMS forwarding app offers features that let you forward your desired text messages and multimedia messages to your email or your other mobile phone so that you can access them later.
File Lock PEA - Password-encryption of files and directories. File PEA encrypts files and folders with authenticated encryption to protect confidentiality and integrity. The program uses memory-hard key derivation functions to prevent custom hardware attacks.
SMS Plus - SMS Plus app offers features that let you forward text messages through internet connection as well as through other social media platforms.
EncFSMP - EncFSMP, a program to mount EncFS folders on Windows and OS X.
Easy Message - Easy Message app comes up with features to help users in effortlessly sending text messages to a phone number, which is not in the contact list.