云计算技术和方案供应者（Enaber）:

• 3Tera - AppLogic grid OS used as cloud computing platform by service providers and enterprises
• Appistry - Cloud computing middleware - Enables easily scalable cloud computing in the enterprise. 
• Cassatt - Cassatt Active Response platform enables administrators to set policies to power physical and virtual servers safely on and off and pool their computing resources.
• Feemod - Cloud tech and infrastructure consultant, in China.
•  CloudScale Networks - Cloud enabler.  Currently in private ALPHA only 
• Enomaly Inc - Service Provider & Cloud Enabler - Developer of the Enomalism Elastic Computing Platform & Elastic Drive 
• Joyent - Cloud Infrastructure (Accelerators), and consulting for developers and enterprise.
• Q-layer - provides software for data centers that enables cloud computing, support VSAN, VLAN, VPDC, currently support VMware ESX.   
• Skytap - IaaS service optimized for QA, Training, Demo, and Ops Testing. Supports VMware, Xen hypervisors & Windows, Linux & Solaris OS guests.

云计算基础设施提供者（IaaS）:

• Agathon Group - Cloud provider. Services include highly available VPS, virtual private datacenters and ready-to-use LAMP stacks. Self-service ordering. Custom development and managed services available.
• Amazon Web Services - Amazon EC2/S3 (Hardware-a-a-S & Cloud Storage)
• CohesiveFT - CohesiveFT Elastic Server On-Demand  
• ElasticHosts - UK-based instant, on-demand servers in the cloud
• Feemod -  China company to provide cloud infrastructure and consult service
• Flexiscale - Another instant provisioner of web servers with some advanced features like auto-scaling coming soon. 
•  GoGrid - instant, on-demand servers offering "control in the cloud". Deploy Windows/Linux servers via web-interface in minutes
• GridLayer - Cloud Provider.  A service by Layered Technologies that delivers Virtual Private Datacenters and virtual private servers from grids of commodity servers
• LayeredTechnologies - Cloud Provider. provider of on-demand hosting and cloud and utility computing solutions through its brand GridLayer
• Mosso - Rackspace's cloud hosting service 
• Newservers - Instant provisioning of web servers either Windows or Linux

云计算平台性服务提供者（PaaS）:

• Aptana Cloud -  Elastic Elastic Application Cloud™ featuring fully stacked and integrated PHP app engines, Ajax/Jaxer app engines, and soon Ruby on Rails app engines -- ready to use and ready to scale as you need it.
• Bungee Connect - Provides end to end tools and systems required to develop, deploy and host web applications (Platform as a Service)  
• Coherence - Oracle Coherence Data Grid for EC2 and other cloud platforms
• Force.com - Salesforce.com's application development platform (PaaS)
• GigaSpaces - middleware for the cloud, "cloudware"  
• Google AppEngine - (PaaS)Now support python
• Heroku - Ruby on Rails in their Cloud
• Morph Labs -  Fully managed, open, elastically-scalable, end-to-end deployment and delivery platform for Ruby on Rails and Java (Jetty, JRuby, Groovy and Grails) web applications. Leverages AWS, but completely abstracts details and complexities from developers.
• Qrimp - An AJAX based PaaS 
• RightScale - RightScale provides a platform and expertise that enable companies to create scalable web applications running on Amazon’s Web Services that are reliable, easy to manage, and cost less  

基于云计算的其他服务（SaaS...）:

• CAM Solutions - SaaS Provider.  Cloud Event Management, Autonomics and Monitoring-as-a-Service(TM)
• CloudStatus- CloudEnabler. Real-time performance trending of cloud infrastructure (currently AWS). 
• Kaavo's IMOD is an easy to use online application.  Cloud Computing Made Easy.
• Microsoft Mesh 
• Nasstar -  SaaS provider.  Business grade Hosted Desktop service, UK market leaders.
• Nirvanix - Cloud Storage 
•  ThoughtExpress - Generic Enterprise Management Service based in semantics supported by semantic computing cloud to perform enterprise information processing to deliver: BPM, BI, enterprise modelling & semantic human interface without the need to program.
• TrustSaaS - uptime monitoring and alerting service ('SaaS Weather Report') for Software as a Service (SaaS) run by an independent third party.
• UtilityStatus - Cloud Diagnostics and Problem Determination for Java Applications on EC2. Heap-Dump Analysis, Thread Analysis, API diagnostics.

• 另外还有elastra,  skytap, desktone, terracotta, terramark,  coghead, sun's network.com, microsoft等公司。

来自：云计算讨论组