Stockvault is a stockphoto resource which offers over 63,000 medium sized images that can be used freely for personal and non-commercial usage.

One of the largest collection of free photographs for private non-commercial use on the Internet, featuring 50 main sections, 1600+ sub sections and over 40,000 images. New pictures added weekly....

Looking for high resolution stock photos for your illustration, comp or design needs? Search morgueFile for free reference images. Yes, they're all completely free. whether you're an illustrator,...

Over 500,000 high quality photos, illustrations, and vector graphics. Free for commercial use. No attribution required. All images and videos on Pixabay are released free of copyrights under...

Caniuse helps you find out which browsers support what features. Type in a feature (such as border-radius) and Caniuse will output a table showing which browsers support that particular feature.

Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. Khan Academy...

This site collects OVAL(Open Vulnerability and Assessment Language) definitions from several sources like Mitre, Red Hat, Suse, NVD, Apache etc, and provides a unified, easy to use web interface to...

CVE Details provides an easy to use web interface to CVE vulnerability data. You can browse for vendors, products and versions and view cve entries, vulnerabilities, related to them. You can view...