Akamai is 'that big content delivery company everybody knows'. They have a huge network and over 100,000 servers all over the world. Akamai's service offering ranges from enterprise cloud computing to HD video delivery. But you can also use Akamai for 'simple static content delivery'.
Amazon Cloudfront is a global CDN for serving static and streaming content. It works seamlessly with any origin server and other Amazon Web Services (S3, EC2), supports secure webpages and there are no contracts or monthly commitments: it's pay as you go.
Azion launched its CDN services in 2011. The focus has always been on Brasil (10+ POPS) but they are building a global network. Azion is a modern CDN with real-time analytics, comprehensive API and fast purging.
Cachefly has a strong focus on static file serving, provides a 100% service level agreement and a 14-day free trial. POPs are in US, EU, Asia, Australia, South-America and Africa. Pricing starts at $0.10/GB in US&EU and drops to $0.022/GB at very high volume (2PB/m).
CDN77 London-based CDN77.com launched in March 2012 and is a low-cost CDN provider. CDN77 has 25+ POPs around the world and offers a free 14-day trial.
CDNetworks has been in the CDN business since 2000 and has POPs in 6 continents, including an impressive 21 POPs in China. CDNetworks has a focus on emerging markets like Russia and India.
CDNify provides a easy to use CDN service with monthly and yearly contracts. CDNify has POPs in 18 locations in North-America and Europe and Asia, incl. in India. Custom SSL integration is free.
CDNsun is a pay as you go CDN targeting small and medium sized businesses who want many features, good POP coverage and low pricing.
CDNvideo is a CDN with video, object and whole site delivery services and has a strong focus on Russia and CIS, and their network map shows that. Pricing is fair.
ChinaCache is well-known as the CDN market leader in China, which undoubtly has to do with thei 127 POP locations and 11000 servers in mainland China. The CDN features list is impressive, including hotlink protection, custom CNAME for SSL and Purge All.
ChinaNetCenter has 500 POPs in mainland China and approx. 100 POPs on other continents as well, including Australia and South America.
CloudFlare has 80 POPs across all continents and provides a Free CDN plan including unlimited data transfer. Paid plans are available and vary based on customer needs (think: features, support, ...).
Fastly is a new generation content delivery network provider with a globally distributed network of edge servers that delivers static content and dynamic/API content. Key features are instant purging, instant updates and spike protection.
Highwinds owns and operates its own network and has POPs in 13 cities in the US, in 7 cities in Europe, two in Brazil, three in Asia and one in Sydney. Highwinds provides an award-winning online console/control panel and real-time analytics.
Incapsula is security-focused CDN that offers many integrated security services including WAF and Bot filtering. They have POPS on 5 continents and plans ranging from Free to Enterprise.
Internap offers CDN services around the globe since 1996 and is a big player in the market. Internap uses exclusively paid transit connections with ISP partners to ensure quality delivery.
KeyCDN launched in 2012 and is a global CDN with their own infrastructure and POPs in US, Europe, Asia, South-America and Australia. They offer a true pay-as-you-go pricing model with a competitive global flat-rate of $0.04/GB for traffic.
Leaseweb Dutch hosting company Leaseweb launched their CDN in June 2013 and now has POPs in Europe, US and Singapore, with more POPs coming soon. Leaseweb CDN has all the basic features in place and is powered by 100% SSD technology.
Level3 is a big, 20+ years old IP network and content delivery company. Level3 owns a Tier 1 backbone, has POPs all over the world and supports all key CDN features.
Limelight is a high-end CDN with a large infrastructure: 18000+ servers in 80+ locations and direct connections to 950+ last-mile access networks around the world. Limelight offers all key features, including HTTPS with custom CNAMEs.
MaxCDN launched in 2009 and has developed into a global CDN with a strong offering, including real-time stats and always $39.95 for your first TB and a 30-day, money-back guarantee.
NGENIX NGENIX has 23 POPs in Russia and the CIS countries and is focussed purely on the *delivery* of content in that part of the world. SSL, API, logfiles etc. NGENIX CDN has all the basic functionality.
QUANTIL is a US based CDN with access to the 500+ POPs of ChinaNetCenter in China, plus tens of self-managed POPs on other continents. Services include whole site acceleration and mobile acceleration.
SkyparkCDN is a global CDN with the largest network in Russia and Ukraine. Their CDN has a low barrier to entry with a pay as you go model.
Tata Communications was formerly known as Bitgravity, a CDN acquired by Tata. Tata operates a global Tier-1 IP network.
Verizon Digital Media Services
Verizon Digital Media Services is a top player in the CDN market with 47 'SuperPOPs' in North-America, EU, Asia, Australia, South-America and the Middle-East. VDMS offers useful features like a HTTP Rules Engine, multiple origins and CNAMEs and Token Authentication.
XCDN XCDN is 'Akamai for basic website delivery without a commit'. You pay as you go and your content is delivered by Akamai’s global delivery platform. XCDN is operated by Exceda, the only Akamai partner with certified professional services trained personnel on staff.