As a designer, stock photography is your lifeblood. Finding clients these days that have a decent photography budget is difficult to say the least. There are plenty of low-cost stock photo sites out there, but even then it can be like pulling teeth getting a client to pay for photos. Thankfully there are plenty of free stock photo sites like those listed below.
While a handful of these sites offers a large collection of images to choose from, they all offer you the ability to build a stockpile of images to use for future projects.
1. Death To Stock
2. Unsplash
3. Free Images
4. Freepik
5. Free Nature Stock
6. StockSnap
7. My Stock Photos
8. PicJumbo
9. Public Domain Archive
10. TookAPic
While most of these sites offer images completely free to use for commercial use, you would be well advised to check any license terms to be sure.
Please also check out http://www.goodfreephotos.com for thousands of unique public domain photos, especially travel photos. Appreciate it if you could add it to your list. Let me know, I always blog about lists that include my site. Thanks!