myabandonware.com and oldgamesdownload.com - free digital archives of old games that are no longer commercially available.

archive.org - the biggest mammajamma of digital libraries hosting tons of media and software. there are a lot of old public domain movies on here.

unsplash.com - host of non-copyrighted images provided for free by volunteer photographers.

w3schools.com - one of the best resources when it comes to learning how to code HTML and CSS.

3dgifmaker.com - what is says on the tin; cool website where you can make 3d gifs out of uploaded images.

photopea.com - in-browser photo editing software as a completely free alternative to adobe photoshop if you're worried about sailing the high seas.