Thank YOU!

..for considering a checksum license. Your support keeps this software (as well as me, my family and hard work) fresh and alive!
checksum is now free for personal use. Thanks for all your support over the years. See the link below for the FREE license generator.
Personal use:
You can grab a FREE license here. If you want to donate something, you can do that here..Professional use:
In a professional setting, data integrity is crucial. With an instant learning curve for employees, optional central configuration, and ultra-fast, secure results, checksum provides a simple, cost-effective solution for your company's data verification needs.
To continue using checksum beyond a month in a professional setting, you are required to purchase a license. checksum costs £10 for a single-user professional license, with excellent volume discounts available for larger organisations.
Some of the world's largest and most critical organisations rely on checksum every single day. So can you..
Prices as follows..
If you would prefer to pay for your license by some other method or barter, or have any other questions, please don't hesitate to contact me.
FAQ:
Licenses are valid for the lifetime of this major version of checksum. My minor upgrades are like most other software's major upgrades!
Licenses are shipped immediately by email on successful PayPal payment. If you didn't get it immediately, check your spam folder! If it's still not there after an hour, mail me.
"Users" means installations. If you install checksum on ten machines which are used by 100 people. You only need 10 professional licenses.
Licenses are keyed to whichever email address you use for the purchase.
License Entry:
Got an old license?Click here to upgrade to the new format (checksum v1.3+) for FREE.
How to get your registration details into checksum..
The ONLY way to get your license details into checksum is via the registration dialog. And aside from a monthly reminder, the ONLY way to get to that is via checksum's About Box.
You can get to the About Box any time checksum is running by right-clicking checksum's System Tray icon. Choose the "About checksum" item.
In the About Box, click the big checksum icon and enter your registration details in the dialogs that appear. To force a new registration when one already exists, use Shift+Click. Tap/click/hover your mouse over the image here for a demo.
Once registered, your email address appears in the About Box, giving you the warm fuzzy glow that only fully licensed software can supply. If you want to change that text to something else, click the text.
If you have any problems with any aspect of your registration, get in touch! I will quickly sort it out.
Your support is appreciated!