Buy Protection Only

Purchase Protection Only

If you only need Protection without the many benefits of Automation, you can purchase one of our licensing clients and manually manage customers, licenses and activations.

The truth is, most of our customers choose to save time and money by using the SOLO Server Automation features and services included in our monthly service plans. Not only does it count and limit the activations for each license, it also saves time, gives you more control and provides customers the immediate gratification they are looking for, with features like:

  • Automated license activation 24/7/365
  • Customer self-service portal to see and manage licenses
  • Periodic license validation
  • New version notification
  • License revocation
  • Automated license transfer to another computer

Before You Purchase

Before you purchase Protection without Automation, be sure to read our blog post, 7 Ways License Automation Increases Revenue and Saves Time.

If you prefer to manually organize and manually manage your customers and licenses, then you can purchase the licensing client(s) you need below.

Note:  All licenses are sold by developer workstation. AutoCrypt SL requires a service plan with SOLO Server Automation.

Instant Protection PLUS 3


Protection PLUS 5 SDK .NET Edition


Protection PLUS 5 SDK Native Edition for Windows


Protection PLUS 5 SDK Native Edition for macOS


Protection PLUS 5 SDK Native Edition for Linux


Protection PLUS 5 SDK LabVIEW Edition (multi-platform)
Contact us to verify appropriateness of using this product.


Protection PLUS 5 SDK Java Edition (multi-platform)


Protection PLUS 5 SDK Android Edition


Protection PLUS 5 SDK iOS Edition


Protection PLUS 5 SDK Native Edition for Linux (ARM)


Protection PLUS 5 SDK License Manager
License Manager is included with each Protection PLUS 5 SDK Edition.


Multiple Developers and/or Multiple Editions
Discounts apply when multiple licenses are  purchased at the same time.

Legacy Products

Contact us to verify appropriateness of using these products:

Protection PLUS 4 SDK Enterprise Edition License


Software Maintenance

Each license of our software comes with one year of software maintenance, which includes updates and electronic support. This maintenance is renewable at any time, and is optional.

Annual maintenance renewals cost roughly 20% of the license cost.

Be sure to keep a safe archive of the installation media for the version that you purchased and are using in your software. Only the latest version is kept on our website and only for customers with an active maintenance agreement.


Flexible and Stable for Thousands of Users

We have used Protection PLUS for many years with thousands of users, and it has been a very flexible and stable product. We recently encountered an issue requiring FIPS-compliance in our software in order to participate with some US government contracts. We contacted SoftwareKey support to inquire about a FIPS-compliant version of Protection PLUS. Even though it required a special build of their library, they researched the issue and provided a solution very quickly. This was a big deal for us to support some large companies evaluating our product.

Andre Martinez Executive Business Services, Inc.


We stand behind our products and services. If for any reason you are not completely satisfied with your Protection PLUS purchase and we are unable to remedy the situation, simply contact us within 30 days of receipt and we will gladly provide a refund.