* https://www.fastly.com/ - Free CDN, all features until 50$/m is reached, enough for most, then pay or suspended.
* http://ddos-protection.io/ - Free DDoS protection with unlimited websites.
* https://www.section.io/ - A simple way to spin up and manage a complete Varnish Cache solution. Supposedly free forever for one site.
* https://www.netdepot.com/cdn/ - First 100 GB free per month.
## PaaS
* http://restlet.com/products/apispark/ - APISpark enables any API, application or data owner to become an API provider in minutes via an intuitive browser interface.
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* http://www.configure.it/ - Mobile app development platform, free for 2 projects, limited features but no resource limits
* https://stamplay.com/ - 50k API calls, 100 GB data transfer, and 1 GB storage for free
* http://qtcloudservices.com/products/managed-runtime/ - Managed platform with micro runtime instance and database for free
* http://elastx.com/start/easypaas/ - Free tier with up to 4 "cloudlets". Must be renewed every year.
* https://viaduct.io/ - 350 MB of RAM and a 1 GB database for free
* http://pagodabox.io/ - Small worker, web server, cache, and database for free
* https://www.cloudandheat.com/en/paas.html - 128 MB of RAM for free, includes support for custom domains for free
## BaaS
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* https://www.mashape.com/ - API Marketplace And Powerful Tools For Private And Public APIs. With the free tier, some features are limited such as monitoring, alerting and support.