- Speaking JavaScript Free eBook
- Free creative commons stock photos: stocksnap.io (even for commercial use)
- Building Microservices: Free Ebook
- free eBook: How to Code in HTML5 and CSS3
- Developing Backbone.js Applications: free eBook
- Designing for Performance | free ebook
- Free programming books :: github repository
- pexels: free stock photos
- free-for.dev: free SAAS services for developers
- Calculus Made Easy by Silvanus P. Thompson