Javascript
AppEngine, Python, Java
Azure
zembly
caroline
Sun, Sun VDI, Sun VirtualBox
Parallels
Citrix
Amazon, EC2
Engine Yard
Flexiscale, New node
GoGrid
Hosting365
IBM Computing on Demand (CoD)
Joyent
PrimaCloud
Rackspace, Mosso, Cloud Sites, Cloud Servers, Slicehost
Savvis, Cloud Compute
10gen, mongo
Amazon, SimpleDB
blist
Google, Google Base
Microsoft, SDS
Trackvia
Xeround
Amazon, SQS
Amazon, S3, CloudFront
Apple, iDisk, MobileMe
Box.net
Bycast, StorageGRID
Diomede
DropBox
Egnyte, Online File Storage, Continuous Data Backup
EMC, Decho, Mozy, MozyHome, MozyPro, Atmos
Gemstone, GemFire
Joyent, BingoDisk
JungleDisk
Microsoft, SkyDrive, Live Mesh
Nirvanix
Oracle, Fusion, Coherence
Rackspace, Mosso, Cloud Files
SoonR
Zmanda, Zmanda Cloud Backup
Allmydata
ElephantDrive
Caringo, CAStor Object Storage
Not too sure how to split this category: suggestions appreciated. How about using Cloud Abstraction Points
Appistry
Apprenda, SaaSGrid
Etelos
GigaSpaces
Oracle, SaaS platform
Cloudsoft
Bungee Labs
Clickability
Coghead
Intuit, QuickBase, Intuit Partner Platform
LongJump
Salesforce, Force.com, AppExchange
Zoho, Zoho Creator
High Performance Computing, CycleCloud, Project Monterey
Caspio
Apprenda, SaaSGrid
Cloudera
WorkXpress
Hyperic
collectd
Bluestripe
vmSight
IBM, Blue Cloud
CloudBerryLab
Cloud builders, rpath
Config Mgmt, Puppet, CFEngine
3Tera, AppLogic
Appistry
Cassat
DataSynapse
Univa UD
CohesiveFT, VPN-Cubed
opensso
Altor
LineSider
Catbird
Reflex
HyTrust
Third Brigade
Soasta
Elastra, Cloud Server
Enomaly
enStratus
Q-Layer
Rightscale
CohesiveFT, Elasticserver
CloudKick
Apache, Hadoop
Intridea, scalr
Sun, SunGrid
VMware, vCloud, vApp
Poolparty
Amazon, DevPay
Aria
eBay, PayPal
eVapt
Evident Software
Google, GoogleCheckout
MetraTech
OpSource
VAlign
vKernel
Zuora
influenced by the cloud, but ...
DHCP, IPAM, NAC
Infoblox
Analytic Database for the Cloud
bespin
RESERVOIR
"software distribution" for setting up and operating Linux clusters, including cluster-specific management tools and software for job processing and Grid computing.
A hardware and software bundle that allows multiple users to share one PC.
AtomSphereSM
Cloud Twitterati, dexin, Doug Neal (gblnetwkr), Mark Masterson (MasterMark), Christopher Hoff (Beaker)
Bloggers/ Podcasts, Alex Barnett, Bungee Labs, Chirag Mehta, SAP, Chris Richardson, Cloud Foundry, Christopher Hoff, David Linthicum, Blue Mountain Labs, Geva Perry, James Hamilton, Amazon, James Urquhart, Cisco, John Willis, Reuven Cohen, Sam Charrington (Cloud Pulse), Appistry, Thorsten von Eicken, Rightscale, Werner Vogels, Amazon, Wes Felter, George Reese, Robert Grossman
Appirio, AppExchange, Google Enterprise
Capgemini
Booz Allen Hamilton
Cloudera
Skills Matter London
CloudCamp
the451group
Gartner
Programmable Web
AWS London User Group
Cloud Computing Interoperability Forum
Open Cloud Consortium
UDT
Jericho Forum
Cloud Security Alliance
Open Group: Security Forum