1. Security related
1.1. Jericho Forum
1.2. Cloud Security Alliance
1.3. Open Group: Security Forum
2. Cloudsoft
3. Open Source Projects
3.1. Eucalyptus
3.2. OpenNebula
3.3. Nimbus
3.4. dotcloud
3.5. Babble (maybe)
3.6. Elastic Computing Platform (ECP)
3.7. Haizea
3.8. Sun's Caroline
3.9. Ganglia
3.10. Parkplace
3.11. allmydata.org "Tahoe"
3.12. Sector/Sphere
3.13. Hadoop
3.14. UDT
3.15. AppScale
3.16. Annelidous
3.17. abiCloud
3.18. Tashi
3.19. libcloud
3.20. DeltaCloud
3.21. CloudLoop
3.22. Ubuntu Cloud
4. programming required
4.1. AppJet
4.1.1. Javascript
4.2. Aptana
4.3. Google
4.3.1. AppEngine
4.3.1.1. Python
4.3.1.2. Java
4.4. Heroku
4.5. Microsoft
4.5.1. Azure
4.6. Sun
4.6.1. zembly
4.6.2. caroline
4.7. Stax
4.8. Vmforce
5. IaaS
5.1. Desktop
5.1.1. Sun
5.1.1.1. Sun VDI
5.1.1.2. Sun VirtualBox
5.1.2. Parallels
5.1.3. Citrix
5.1.4. Kernel based Virtual Machine (KVM)
5.2. Compute
5.2.1. Amazon
5.2.1.1. EC2
5.2.2. Engine Yard
5.2.3. Flexiscale
5.2.3.1. New node
5.2.4. GoGrid
5.2.5. Hosting365
5.2.6. IBM Computing on Demand (CoD)
5.2.7. Joyent
5.2.8. PrimaCloud
5.2.9. Rackspace
5.2.9.1. Mosso
5.2.9.1.1. Cloud Sites
5.2.9.1.2. Cloud Servers
5.2.9.2. Slicehost
5.2.10. Savvis
5.2.10.1. Cloud Compute
5.2.11. Enki
5.2.12. vCloud partners
5.2.12.1. bluelock
5.2.12.2. Hosting.com
5.2.12.3. MelbourneIt
5.2.12.4. terremark
5.2.13. ElasticStack
5.3. Database
5.3.1. 10gen
5.3.1.1. mongo
5.3.2. Amazon
5.3.2.1. SimpleDB
5.3.2.2. Relational Database Service (RDS)
5.3.3. blist
5.3.4. Google
5.3.4.1. Google Base
5.3.4.2. through AppEngine
5.3.5. Microsoft
5.3.5.1. SDS
5.3.6. Cloudant
5.3.6.1. couchDB based
5.3.6.2. Replication supported
5.3.7. Trackvia
5.3.8. Xeround
5.4. Middleware
5.4.1. Amazon
5.4.1.1. SQS
5.4.1.2. Simple Notification Service (SNS)
5.5. Storage
5.5.1. Amazon
5.5.1.1. S3
5.5.1.2. CloudFront
5.5.1.3. Elastic Block Store (EBS)
5.5.2. Apple
5.5.2.1. iDisk
5.5.2.2. MobileMe
5.5.3. Box.net
5.5.4. Bycast
5.5.4.1. StorageGRID
5.5.5. Diomede
5.5.6. DropBox
5.5.7. Egnyte
5.5.7.1. Online File Storage
5.5.7.2. Continuous Data Backup
5.5.8. EMC
5.5.8.1. Decho
5.5.8.1.1. Mozy
5.5.8.1.2. Atmos
5.5.9. Gemstone
5.5.9.1. GemFire
5.5.10. Joyent
5.5.10.1. BingoDisk
5.5.11. JungleDisk
5.5.12. Microsoft
5.5.12.1. SkyDrive
5.5.12.2. Live Mesh
5.5.13. Nirvanix
5.5.14. Oracle
5.5.14.1. Fusion
5.5.14.1.1. Coherence
5.5.15. Rackspace
5.5.15.1. Mosso
5.5.15.1.1. Cloud Files
5.5.16. SoonR
5.5.17. Zmanda
5.5.17.1. Zmanda Cloud Backup
5.5.18. Allmydata
5.5.19. ElephantDrive
5.5.20. Caringo
5.5.20.1. CAStor Object Storage
6. PaaS
6.1. Enterprise
6.1.1. Appistry
6.1.2. Apprenda
6.1.2.1. SaaSGrid
6.1.3. Etelos
6.1.4. GigaSpaces
6.1.5. Oracle
6.1.5.1. SaaS platform
6.2. Hosted
6.2.1. Bungee Labs
6.2.2. Clickability
6.2.3. Coghead
6.2.4. Intuit
6.2.4.1. QuickBase
6.2.4.2. Intuit Partner Platform
6.2.5. LongJump
6.2.6. Salesforce
6.2.6.1. Force.com
6.2.6.1.1. AppExchange
6.2.7. Zoho
6.2.7.1. Zoho Creator
6.2.8. High Performance Computing
6.2.8.1. CycleCloud
6.2.8.2. Project Monterey
6.2.9. Caspio
6.2.10. Apprenda
6.2.10.1. SaaSGrid
6.2.11. Cloudera
6.2.12. WorkXpress
7. Management
7.1. Monitoring
7.1.1. Hyperic
7.1.2. collectd
7.1.3. Bluestripe
7.1.4. vmSight
7.2. Other
7.2.1. IBM
7.2.1.1. Blue Cloud
7.2.2. CloudBerryLab
7.2.3. Cloud builders
7.2.3.1. rpath
7.2.4. Config Mgmt
7.2.4.1. Puppet
7.2.4.2. CFEngine
7.2.4.3. Opscode
7.3. Private Cloud
7.3.1. 3Tera
7.3.1.1. AppLogic
7.3.2. Appistry
7.3.3. Cassat
7.3.4. newScale
7.3.5. DataSynapse
7.3.6. Univa UD
7.3.7. openQRM
7.3.8. Canonical's Landscape
7.3.8.1. Manages Ubuntu Enterprise Cloud
7.3.9. Novell
7.3.9.1. Cloud Manager
7.4. Security
7.4.1. CohesiveFT
7.4.1.1. VPN-Cubed
7.4.2. opensso
7.4.3. Altor
7.4.4. LineSider
7.4.5. Catbird
7.4.6. Reflex
7.4.7. HyTrust
7.4.8. Third Brigade
7.4.9. Novell
7.5. Testing
7.5.1. Soasta
7.6. Topology Management
7.6.1. Elastra
7.6.1.1. Cloud Server
7.6.2. Enomaly
7.6.3. enStratus
7.6.4. Q-Layer
7.6.5. Rightscale
7.6.6. CohesiveFT
7.6.6.1. Elasticserver
7.6.7. CloudKick
7.7. Workload/ Provisioning / Scheduling
7.7.1. Apache
7.7.1.1. Hadoop
7.7.2. Intridea
7.7.2.1. scalr
7.7.3. Sun
7.7.3.1. SunGrid
7.7.4. VMware
7.7.4.1. vCloud
7.7.4.2. vApp
7.7.5. Poolparty
7.7.6. openQRM
7.7.7. Canonical's Landscape
7.7.7.1. Ubuntu Enterprise Cloud (UEC)
7.7.7.2. AWS EC2, S3 etc.
7.7.8. ServiceMesh
7.7.9. Novell
7.7.9.1. PlateSpin
7.7.9.1.1. Orchestrate
7.7.9.1.2. Migrate
7.8. Billing/ Contract
7.8.1. Amazon
7.8.1.1. DevPay
7.8.2. Aria
7.8.3. eBay
7.8.3.1. PayPal
7.8.4. eVapt
7.8.5. Evident Software
7.8.6. Google
7.8.6.1. GoogleCheckout
7.8.7. MetraTech
7.8.8. OpSource
7.8.9. VAlign
7.8.10. vKernel
7.8.11. Zuora
7.9. Governance/Policy Mgmt
7.9.1. ServiceMesh
8. TO CLASSIFY
8.1. SAP
8.2. Virtual Iron
8.3. Foundation
8.3.1. Infoblox
8.4. Vertica
8.4.1. Analytic Database for the Cloud
8.5. Mozilla.org
8.5.1. bespin
8.6. Zimory
8.7. Cloudkick
8.8. Arjuna
8.9. Government funded projects
8.9.1. RESERVOIR
8.10. Symform
8.11. Rocks
8.12. SugarSync
8.13. NComputing
8.14. InstallFree
8.15. Boomi
8.15.1. AtomSphereSM
8.16. Zetta
9. Community
9.1. Individuals
9.1.1. Cloud Twitterati
9.1.1.1. dexin
9.1.1.2. Doug Neal (gblnetwkr)
9.1.1.3. Mark Masterson (MasterMark)
9.1.1.4. Christopher Hoff (Beaker)
9.1.2. Bloggers/ Podcasts
9.1.2.1. Alex Barnett
9.1.2.1.1. Bungee Labs
9.1.2.2. Chirag Mehta
9.1.2.2.1. SAP
9.1.2.3. Chris Richardson
9.1.2.3.1. Cloud Foundry
9.1.2.4. Christopher Hoff
9.1.2.5. David Linthicum
9.1.2.5.1. Blue Mountain Labs
9.1.2.6. Geva Perry
9.1.2.7. James Hamilton
9.1.2.7.1. Amazon
9.1.2.8. James Urquhart
9.1.2.8.1. Cisco
9.1.2.9. John Willis
9.1.2.10. Reuven Cohen
9.1.2.11. Sam Charrington (Cloud Pulse)
9.1.2.11.1. Appistry
9.1.2.12. Thorsten von Eicken
9.1.2.12.1. Rightscale
9.1.2.13. Werner Vogels
9.1.2.13.1. Amazon
9.1.2.14. Wes Felter
9.1.2.15. George Reese
9.1.2.16. Robert Grossman
9.1.2.17. Cloudonomics
9.1.2.18. CloudChasers
9.2. Analyst Firms
9.2.1. the451group
9.2.2. Gartner
9.3. Developers
9.3.1. Appirio
9.3.1.1. AppExchange
9.3.1.2. Google Enterprise
9.3.2. StreamStep
9.4. Consultants
9.4.1. Capgemini
9.4.2. Booz Allen Hamilton
9.4.3. Grid Dynamics
9.5. Education
9.5.1. Cloudera
9.5.2. Skills Matter London
9.5.3. CloudCamp
9.5.4. The Cloud Tutorial
9.6. Resources
9.6.1. Programmable Web
9.6.2. AWS London User Group
9.6.3. Cloud Taxonomy
9.7. Emerging Standards
9.7.1. Cloud Computing Interoperability Forum
9.7.2. Open Cloud Consortium
9.7.3. UDT