GOOGLE APP ENGINE
…comes with following free: 46.3 CPU hours, 500 MB, 20 GB data transfer (10-in/10-out)
…add’l pricing is $0.10-0.12/CPU-hour processing, $0.15-0.18/GB storage, $0.13-0.5/GB outgoing, & $0.09-0.11 incoming data.

TERREMARK
*PROCESSING IS VERY PRICEY*
Spoke with their account rep and quoted $2,000/month for 5 GHz/10 GB RAM which equates to $0.83 effective rate/hr pure processing without included bandwidth or storage. Charges for bandwidth is good @ $40-50/mo per Mbps (I think this is $.063-.079/GB)

MOSSO/RACKSPACE
Recently announced their CloudFiles Storage ($0.13-0.15/GB) and Limelight CDN partnership ($0.15-0.22/GB). Impressive given size/value of Limelight content distribution.

CloudSites is like Google App Engine and priced at $100/mo with included 10k compute cycles (comparable to Amazon EC2 small 1.2 GHz instance), 50GB storage, 500GB traffic, and 3 Million page views.

SLICEHOST (Also by Rackspace)
Different from Mosso CloudSites as can setup own virtual server with root access to run any application or language. Priced by “slice” ranging from virtual server having 256MB RAM w/10GB storage & 100GB traffic @ $20/mo up to15.5GB w/620GB storage, 2TB traffic @ $800/mo.

FLEXISCALE is UK-based and comes around $0.19/hr US-dollar for small server (1.5 GB,1CPU) to $1.03 XL (8GB,4CPU) and from $0.09/GB traffic in, $0.10-0.13/GB out, $0.34-0.39 storage (the latter being a little high)

LIQUID WEB
$60/$100 VPS plans, as well as storage and traffic bundles ($0.08 & $0.03 per GB respectfully) and RAM upgrades.

ENTIC.NET is Solaris-based and most similar to Joyent
$10-60/month plans, all with 4 CPUs and bundled traffic/storage

GRIDZONES is also Solaris-based and similar to Joyent
$10-100/mo from 64MB RAM, 2GB storage, 10GB traffic up to 1GB RAM, 50GB storage, 400GB traffic

3TERA
They are the creator of Applogic OS and I was very impressed. They do not host themselves but partner with other firms Layered Technologies (GridLayer), ENKI and others around the world. Unlike other grid providers like Terremark, the Visio-like AppLogic Editor allows you to visually draw & deploy with 1-click your technical architecture including net connections, firewalls, load balancers, web & app servers, replicated db server (master-master, master-slave), log/monitor console, etc. and even scale automatically up & across horizontally with their SLA virtual appliance. Very impressive. This is called app virtualization and is host-agnostic as can be migrated in minutes (dependent on dataset size) to another provider regionally or internationally and even backup to Nirvanix, Amazon S3 or Layered Technologies (Grid Layer) DynaVol and restore complete app+data effortlessly.

GRID LAYER (Layered Technologies)
Uses 3tea AppLogic Grid Operating System and is their largest partner. However, it is important to note that not a true cloud as you have to first provision for dedicated severs to be allocated to the grid on a whole. The virtualized apps when running can then scale up to the entire available grid’s resources as all processing, storage and traffic is aggregated. If available capacity is used, then need to have more dedicated serves added to the grid. The only 3tera partner which is different is ENKI as utilizes a shared grid & serves for all customers but then you are charged a higher utility price of $0.78 per core-hour. By sharing, customers lose ability to self-manage or use if AppLogic Editor to design, revise or otherwise manage their own virtual appliances. Whilst this approach is ideal for some customers, I prefer to be able to manage and deploy apps myself. Due to this reason, they are pricier.

GO GRID
Data transfer in is free, has some nice open APIs to instantly provision servers, and since also has dedicated and co-location business allow hybrid model of mix with cross-connected cloud-based scalable compute resources. Has ‘pay-as-you-go’ and pre-paid plans, ranging from $0.14-0.32/hour effective pricing

VOXEL.NET/VoxCast
Although not cloud computing, Voxel.net has very good physical & virtual hosting prices. They also offering ‘Universal’ bandwidth pricing so in that regard their global CDN is priced very competitively. I spoke with their account and technical folks who said they are also rolling our virtualization in their CDN edge nodes, Chicago and Amsterdam first, so your app can be run as globally distributed.

NIRVANIX
Offers their SDN (Storage Delivery Network) and CloudNAS, similar to Amazon S3 and Mosso CloudFiles. Their storage costs are $0.25/GB which is more than the other 2 services mentioned but still priced fairly. However, not so with their traffic out as is very expensive at $0.66/GB and at that price-point is comparable to top level, mainstay CDNs like Akamai. They also partner with CDNetworks which if used will lower delivery to $0.40/GB

APPNEXUS
Pay-as-you-go compute pricing, $0.22 per hour for 2.83 GHz w/8GB RAM, 2X 750GB storage drives (1.5TB total). Other DB-server specific pricing is higher but utilizes fast 10K RPM RAID-10 SAS drives. Offers SAN pricing @ $0.50/GB which utilizes dual-mirrored Isilon Storage units @ 300MB/s throughput. Two datacenters (one of each U.S. coast and plans for European expansion) are globally load balanced.