This app can securely wipe an entire disk so that the data cannot be recovered. The owner of the app, Blancco, offers related paid products, including some that support RAID. Operating System: OS Independent
This utility securely deletes individual files. It includes a helpful scheduler. Operating System: Windows
Another option for secure file deletion, this app allows the user to determine how many times deleted data is overwritten depending on the sensitivity of the data being deleted. It offers fast performance and can handle large files. Operating System: Windows
Document Management Systems (DMS)
This professional-caliber tool aims to make it easy to archive and manage documents for a large organization. A paid enterprise version and paid services are available. Operating System: Windows
Highly rated DSpace describes itself as "the software of choice for academic, non-profit, and commercial organizations building open digital repositories." It offers a Web-based interface and very easy installation. Operating System: Windows, Linux, OS X
Epiware offers customizable, Web-based document capture, management, storage, and sharing. Paid support is also available. Operating System: Windows, Linux
This document management system for mid-size to large enterprises boasts that it requires nearly no end user training. Paid enterprise and cloud versions are also available. Operating System: OS Independent
Standards-based OpenKM includes features like version control and file history, metadata, scanning, workflow and search. It also offers some collaboration and social business capabilities. Operating System: OS Independent
Downloaded nearly 3 million times, AxCrypt is the "leading open source file encryption software for Windows." It works with the Windows file manager and with cloud-based storage services like Dropbox, Live Mesh, SkyDrive and Box.net. Operating System: Windows
Extremely lightweight, the 44KB Crypt promises very fast encryption and decryption. You don't need to install it, and it can run from a thumb drive. However, users should note that it doesn't have a GUI. Operating System: Windows
Gnu's implementation of the OpenPGP standard allows users to encrypt and sign data and communication. A very mature project, it's been under active development for sixteen years. Operating System: Linux
The original GPG runs only on Linux, but this version ports it for Windows. It's easy to install and includes plug-ins for Outlook and Windows Explorer. Operating System: Windows
57. GPG Tools
Lest OS X users feel left out, this project ports GPG to the Mac. The latest version supports Mavericks, as well as older versions of OS X. Operating System: OS X.
Extremely popular, this utility has been downloaded nearly 30 million times. It can encrypt both single files or entire drives or partitions. Operating System: Windows, Linux, OS X.
Photo courtesy of Shutterstock.