With a library of 4000+ free textures, Mayang’s website should be one of your first stops. They have high quality textures, signage, and all sorts of other images.
The catch: you can only download 20 images a day and its tracked by your IP address (so if other people are using the same MICA internet as you on the same day, then it could pose as a problem).
CG Textures is one of the most popular resources for textures. They have a library of over 10,000 images and most of their textures are tileable.
The catch: Can only download upto 15mb of textures in a 24 hour period. You also cannot distribute these textures.
Tons of high quality textures that can be used for commercial work as well.
The catch: I don’t think there is, but let us know if you find one.
Lots of stuff that aren’t just textures – there’s bokeh, light trails, grungy paper, etc.
The catch: It is a list of collections from various websites that all may have different catches.
Lots of user-submitted art, so if you have textures to, you can submit them to increase their library
The catch: Licensing varies from image to image because it is all user-submitted. So just make sure and double check certain things before you use them for anything commercial.
*The Animation Server
MICA’s Animation Server has an animation library with a few textures already uploaded.
Do you have more resources? Please submit them in the comment section below or email firstname.lastname@example.org and we will start adding them to the list.