When it comes to publishers, few names stand out in the technical world like O'Reilly. With literally thousands of books and videos, there are topics ranging from Programming to Business, and Fitness to Photography. Not only does O'Reilly print under its own name, but it also owns several other brands including: Wiley, Packt Publishing, No Starch Press, and more. Almost every developer probably has a small stack of books with the trademark line-drawn animals on the covers.

In honor of Day Against DRM, O'Reilly has cut the price of everything in its entirely library by half. The discount applies to both books and videos, and it even includes brand new releases. Additionally, if an order comes in at over $100, the savings jump to 60%.

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Budding app developers may be interested in browsing through hundreds of books about Android and Java. Of course, there are topics for everybody, even sections for Health and Do-it-Yourself projects.

The deal only applies to digital content, so no trees will be harmed on this shopping trip. To activate the discount, just use the code DRM2014 when you go to checkout. You'd better hurry up, the sale only runs for 24 hours, ending May 7th at 5 am (PDT).

[O'Reilly - Day Against DRM]