Zuora, the Marc Benioff-backed on-demand billing and payments start-up, has announced what it calls the Z-Commerce Platform, a development platform dedicated to monetizing cloud computing services.

Zuora CEO Tien Tzuo describes the widgetry as the start-up’s most important product announcement to date, “a big step towards our vision of being the de facto commerce engine for the cloud.”

With Z-Billing, Z-Payments, and Z-Force, its existing products, the company’s supposed to have a suite of business cloud solutions focused on driving revenue from cloud computing.

It figures there’s huge market potential for a provider of cloud-based commerce capabilities such as subscription billing and payments given predictions like Merrill Lynch’s that puts the addressable market for cloud computing at $160 billion, including $95 billion in business and productivity applications.

In fact, Zuora claims upwards of 50% of its inbound leads come from cloud computing companies looking for a way to monetize their services. This is what Zuora calls the business cloud.

According to IDC, “payments and billing are two of the thorniest and critical business operational elements facing both new and mature SaaS and cloud vendors.” So a solution relieves a key pain point.

Zuora’s new platform is supposed to work with any cloud computing platform, including Amazon Web Services, salesforce.com’s Force.com and Google AppEngine.

It includes a set of APIs to tap into Z-Billing, Z-Payments, and Z-Force; a SubscribeNow() call to add one-click order processing to any web site; sample code and toolkits for Java, .NET, and PHP; a sandbox environment for developing and testing commerce solutions; and a so-called Z-Store reference implementation, said to be a fully functional web store, complete with source code, that takes subscription orders from a web site and lets end users to manage their subscription and billing information.

There’s also a Zuora developer community site for collaborating around the business cloud and sharing best practices. See http://developer.zuora.com.

Z-Billing is designed for subscription companies. Z-Payments is a complete payment solution for subscription businesses and can accept PayPal payments. The Z-Force billing and payment system is integrated with Benioff’s salesforce.com.

Cloud Computing Technology Contributors of 2009
10Gen, 3Leaf Systems, 6fusion International, Absolute Performance, Ajaxo, Alentus, Appirio, Appistry, Aptaria, Arena Maxtronic, Arista Networks, Asankya Networks, BitRock, BlueLock, Boomi , Box.net, Canaan Partners, Casdex, Chris Richardson Consulting, CITTIO, Cloud Architects, Cloud9 Analytics, CloudRamp, CloudScale Networks, Cloudscape.ws, CloudWorks, CNI Systems, CohesiveFT, CollabNet, Concentric, Cordys, Cronus Partners, CSRware, CuperTek, Cycle Computing, Dataline, Dell, DNAmail, eBay, Elastra, Engine Yard, Enki Consulting, Enomaly, Excelian, Flexiscale, Forrester, Fortress ITX, G.ho.st, Gear6, GigaSpaces, GoGrid, GraphLogic, GridGain, IBRIX, InfoQ, IntelePeer, IronKey, Iterative Designs, ITO America, Jamcracker, Joyent, JumpBox, Just Skill, Kaavo, Linxter, Mohr Davidow Ventures, MessageLabs, Mimecast, Model Metrics, Moderro Technologies, Moka5 (MokaFive), Mosso, Netmagic, NewServers, Ocarina Networks, Panorama Software, Parabon Computation, Parallels, ParaScale, Patni Computer Systems, Peer1 Networks, Platform Computing, PLX Technology, ProjectLocker, Promise Technology, Qlayer, QlikTech, Rackspace, RampRate, Red Hat, Reliance Globalcom, RightScale, Robson Taylor, Rogue Wave, rPath, Salesforce.com, Sapotek, Saugatuck Technology, ScanSafe, ServePath, ServiceCloud, SIMtone, SkillSoft, Skytap, SmugMug, SOASTA, Solace Systems, Spiceworks, SpiderOak, Symphony Services, Tap In Systems, Teneros, Terremark, Transitive, Trend Micro, Union Square Advisors, Unisys, Univa UD, uTest, Vertica, Weber Shandwick, Widen Enterprises, XCalibre, Zabovo.com, Zeus Technology, and Zuora.

Virtualization Technology Contributors of 2009
123Together.com, 361 Degrees, 3PAR, 8e6 Technologies, A10 Networks, Aastra, Accario, Accellion, AccessFlow, AceNet, ACMA, Acronis, Actional, activePDF, Acxiom, Adaptec, ADC, Adder, Adexis, Adtran, Agilysys, Agito Networks, AirMagnet, Akorri, ALADDIN Knowledge Systems, Alcatel-Lucent, Alert Logic, AlterPoint, Altor Networks, AMAX, AMCC, Amyuni, Apani, APC, APCON, APM Experts, Appistry, Applied Innovations, Apptio, Aquantia, Arastra, Aravo, Arbor Solutions, ArcSight, Areohive Networks, Array Networks, Arrow ECS, ARTEC - Computer, Asigra, Asoka USA, Aspera, Astaro Internet Security, Atempo, ATEN Technology, Attune Systems, AutoVirt, Avanade, Avaquest, Avaya, Aventiv-NomaDesk, Avocent, AVTECH, AXIOMTEK, BakBone, BBN Technologies, BDNA, BEA Systems, Bedsole, Benchmark Capital, Berkeley Varitronics, BigFix, Bivio Networks, Blade Network, Blue Lane, BlueArc, BluePoint, BlueStripe, Bobcares, Bosanova, Brigh Technologies, Brocade, CA, CalAmp, Capitial Trust Ventures, Cassatt, Catbird, Cayenne, CDG, Ceedo, Certeon, Champion Solutions, Check Point Software, Chip PC, CiRBA, Citihub, Citrix Systems, ClearCube, CommVault, Compass America, Compellent, Compugen, Computer Lab International, Concentsus, Configuresoft, Continuity Software, Coraid, Courion, Coyote Point Systems, cPanel, Credit Suisse, Crosswalk, CrystalTech Web Hosting, CSC, Data Domain, Databarracks, DataCore, DataDirect, Datagardens, DataPipe, DataSynapse, DC3 Solutions, Dell, EqualLogic, Desktone, Devon IT, Digipede, Doctrino Systems, DocuSign, DoubleTake Software, Dynamic Network Factory, DynamicOps, Ecora Software, eG Innovations, Egenera, Electric Cloud, Electrorack, Embotics, Emulex, Endeavors Technology, Enigmatic, Enomaly, Entuity, EqualLogic, Ericom, EVault, Evolving Solutions, Exinda, eXludus, Extentrix Systems, F5Networks, FalconStor, Faronics, FastScale, FastSoft, FOCUS Consulting, Fortinet, Fortisphere, Fugitive LLC, Fujitsu Systems, Fusepoint, FusionStorm, Gateworks, Getronics, Gibraltar Solutions, GlassHouse Technologies, GlobalFluency, GlobalSCAPE, GlobalSign, Green Hills Software, Grid Dynamics, GRIDtoday, groupSPARK, Hiperware, Hitachi Data Systems, Hubspan, Hurricane Electric, Hyper9, HyPerformix, Hyperic, I2 Technology, IGEL Technology, Ignite Consulting, Illumita, IMEX Research, Incipient, Insight Venture Partners, InstallFree, INSYSTEK,Integrien, Ipswitch, Isilon Systems, iTrinegy, KACE, Kaseya, KI Lipton, Kidaro, Kingston Technology, KnownHost, Lanamark, LeftHand Networks, Lenovo, Leostream, Liquid Computing, Lucid8, LynuxWorks, Magirus, Mailtrust, Mainline, ManageIQ, ManageSoft, Marathon Technologies, Marketo, Markitects, McAfee, Meridian IT, Metron, Microsemi, Microserv, Mid-Atlantic Computers, MIMOS, Mimosa Systems, Mindbridge Software, Miva Merchant, MonoSphere, Morph Labs, Mxi Technologies. mySoftIT, Nagarro, Namescape, Ncomputing, NEC, Nemertes, NeoPath, Neoware, Net Magic, NetApp, Neterion, NetEx, NetIQ, Netuitive, Network Appliance, Neverfail, New Age Technologies, New Idea Engineering, NewTek, Nexenta, NextIO. Nimsoft, Niyuta, NoMachine, Nortel, Novell, Old Road Computing, Omnitron, On The Avenue, ONStor, Opalis Software, Open Kernel Labs, OpenHosting, OpenSpan, Optaros, Opus Capital, PacketTrap, Palm, Inc., Panda Security, Pano Logic, Pattern Insight, Peak IP Solutions, PHD Technologies, Phoenix Technologies, Phurnace Software, Pillar Data Systems, Pinnacle Cart, Pivot3, Platespin, Proofpoint, ProServeIT, ProSync, Provision Networks, , Q1 Labs, QG Software, Qualys, Quest Software, R1Soft, Racemi, RACKWISE, Radiant Logic, Raritan, Raxco Software, Red Hat, Reflex Security, Regan Technologies, Resolution Enterprises, RF Code, Riverbed, RSA Security, Ruckus Wireless, Sagent Solutions, SanDisk, SAVVIS, ScaleMP, Scalent Systems, ScienceLogic, ScriptLogic, Seanodes, Secure Command, Secure Computing, Sentillion, ServInt, Shavlik, Silpion, SIMtone, Singularity Technologies, Sitemasher, SmarterTools, Socialcast, SoftLayer, SolarWinds, SolutionSet, Sonasoft, SSH Communications Security, StackSafe, Starfire, SteelEye Technology, StillSecure, StoneFly, Stonesoft, Stoneware, StorageCraft, StorageNetworking.org, StorMagic, Stratus, Sun Microsystems , Oren Tech, SunView, Supermicro,, Surgient, SWsoft, Sycros, Symantec, Systar, Telecompute, The 451 Group, The Israeli Association of Grid Technologies, TheInfoPro, ThinkEquity Partners, ThinPrint, Third Brigade, Tideway, Tigerpaw, TOA Solutions, ToutVirtual, Train Signal, TRANGO Virtual Processors, Tresys Technology, Trigence, Tripwire, Twisted Pair Solutions, UK-2 Limited, Ulteo, UniPrint, United Devices, V.i. Labs, VaST Systems, VDIworks, VeeAm Software, Veodia, Verio, VeriSign, Vicom, Vigilar, VirtenSys, Virtera, Virtual Computer, Virtual Iron, VirtualizationChat.com, VirtualLogix, Virtugo, Virtutech, Visionapp, VisionCore, VKernel, VM People, VM6, VMLogix, vmSight, vThere, Vyatta, Wyse Technology, XDS, XenoCode, Xiotech, xkoto, Xsigo.

AJAX & RIA Technology Contributors of 2009
3Tera, Abaque, Accenture, AccuRev, AccuSoft, Active Endpoints, Active Inquiry, ActiveState, Actuate, Adaptive Blue, Adaptive Path, Adobe Systems, Afrous Dashboard, Agitar Software, AGOSYS, AJAX 13, Akamai, Alfresco, Allurent, Alpha Software, Altova, Amazon.com, Appcelerator, Appeon, Apple Computer, Applibase, , AppTrigger, Apress, Aptana, Aragon Consulting, Art & Logic, Ask Pivot, Asperon, Astreya, Atlassian, Aztecsoft, Azul Systems,, BackBase, Barracuda Networks, Baynote, BEA Systems, Bizwhazee, Black Duck, Blogtronix, BlueFolder, BlueTie, BondDesk, Borland, BOSSdev, Bottomline, BScaler, Bungee Labs, Burton Group, CambrianHouse, Canoo Engineering, Cassatt, Cast Iron, Catalyst Resources, Cenzic, Chordiant, CIGNEX, Cisco Systems, Cision, Citrix Systems, Claria, Clearspring, CodeFlare, Codign, Coghead, Cognizant, ComponentArt, ComponentOne, Conference Guru, Coradiant, Corent Technology, CoreSpeed, Corizon, Crescendo Networks, CSS Group, cStar Technologies, CSW Group, Curl, Cybage, Cynergy Systems, Dapper, Dassault Systèmes, DataDirect, Day Software, dCongo, deCarta, Dell, Denim Group, Denodo, Design Universe, DeviceAnywhere, Dialcom, Dice.com, DiscountASP.NET, DotNetNuke, Drangonfly, DreamFace Interactive, Dynamic Toolbar, DynaTrace, EffectiveUI, Egnyte, Ektron, Elastic Path, Elementool, EMC, Encanvas, ENOVIA Matrix One, EnterpriseDB, Ephox, esnips, ESRI, Etelos Systems, etouch, Evans Data, Exadel, ezAJAX, F5 Networks, FeedbackFX, Fig Leaf Software, Finetooth, Fiorano Software, firstRain, FiveRuns, Foldera, Force10 Networks, Fortify, Forum Systems, Fotango, Freewebs, froglogic, Funambol, FundingPost, Furtherahead.com, Fusion Technologies, Gaggle.Net, GemStone, genius.com, Genuitec, Gizmox, Glassbox, GoGrid, Gomez, Inc., GreenHat, GreenPoint, GridApp Systems, Groupware Technology, Helmi Technologies, Hitachi America, Hosting.com, HostMySite.com, HP Software, Hummer Winblad Venture Partners, Ibiza Software, IBM, ICEsoft, ILOG, Impetus, iNetOffice, Infinilogic, Infragistics, Ingres, Inimit, Innominds, Innoopract, inpowr, InsideView, Instancy, Instantiations, Integration New Media, Intel, IntelliObjects, Intelliun, Interactive Networks, InterSystems, Isomorphic, IT Mill, ITtoolbox, JackBE, JadeLiquid, JasperSoft, Javeline, JBoss, JellyCloud, JetBrains, Jive Software, K2, Kaazing, Kapow, Keynote Systems, KonoLive, Krugle, Laszlo Systems, Lightstreamer, M/Gateway, Magic Software, Mainsoft, Manning Publications, Marathon Technologies, Mashery, Mashmatrix, MaxiScale, MB Technologies, Metia Software, Microsoft, Midnight Coders, Molecular, MomentumSI, Morfik, Neocleus, Neotys, Netfective, Netmite, NetSuite, Nexaweb, Nextapp, NextAxiom, NextDB.net, Nirvanix, Nitobi, Northwoods Software, Novell, Novulo, OASIS, ObjectWave, OpenLink, OpenLogic, OpenSpot, OpenWave, OPNET, OpSource, Oracle, OrangeHRM, OSS Nokalva, Parasoft, Passport Corporation, Pentaho, Perforce, Pervasive Software, Primavera Systems, PushToTest, QLogic, Quasar Technologies, Quest Software, Rackable Systems, Radialpoint, RadView Software, Rearden Commerce, Recursion Software, Red Hat, Roaring Penguin, Salesforce.com, SAP, Saven Technologies, Scalix, Servoy, SkillBuilders, Skyway, SL Corporation, SlickEdit, SnapLogic, SOA Software, Software AG, Software FX, Sonic Software, SoonR, Splunk, SugarCRM, Sun Microsystems, Sybase, iAnywhere Solutions, Symphoniq, TeaLeaf Technology, Tele Atlas, telerik, ThinkFree, TIBCO Software, TriveraTechnologies, Valtech, Visual Mining, VMware, Vocus, WatchFire, WaveMaker, Web Spiders, WebAppCabaret, Webtide, Wipro, WSO2, XAware, Xenos, Xythos Software, Yahoo!, Zapatec, ZCubes, Zimbra, ZOHO, and Zoovy.

SOA / WOA Technology Contributors of 2009
/n Software, Aberdeen Group, Abovo Group, AccelTree, activePDF, ActiveServers, Actuate, AdventNet, AgentWare, Agilent Technologies, AgilePath, Altova, AmberPoint, AMD, Amentra, American Coders, Amyuni, AppSense, Apptricity, Aprimo, Arbortext, Attachmate, Autodesk, Azul Systems, BEA Systems, B-hive, Black Hat, BlackDuck Software, BlueNote Networks, BMC Software, Borland, BroadVision, Business Objects, CA, CalAmp, CapGemini, Catalyst Systems, CheckFree, ClearApp, Codagen, COGNOS, ComponentSource, Composite Software, CSC, Compuware, Covalent, DevelopMentor, DigitalAssets, Eclipse.org, Embarcadero Technologies, EnterpriseDB, Fair Isaac, Farata Systems, Fiorano, Forum Systems, Fuego, Fujitsu, Gartner Group, Gizmox Systems, Global Knowledge, Gluecode Software, GT Software, Gutenberg Communications, HP, HiT Software, Hitachi, HP Bluestone, Information Builders, Interwoven, Ipedo, iTKO, J9 Technologies, Jacada, JustSystems, Layer 7 Technologies, LogicLibrary, LogiXML, MacroVision, Maestro CMS, Magoo Software, McAfee.com, Mellanox, Micro Focus, Mindreef, MKS / Mortice Kern Systems, NASTEL Technologies, NEON Systems, NetIQ, OMG, Object Management Group, ObjectBuilders, ObjectFocus, Objective Solutions, Open Text, OpenLogic, OpenMake, OpenSpan, OpTier, Optika, Oracle, PaperThin, PerfectXML, Perficient, Inc, preEmptive Solutions, Progress Software, Prolifics, Rackspace, Red Hat / JBoss, Rogue Wave, RSA Security, SAP, Sapiens, Seagull Software, Seapine Software, ServerLogic, SOALogix, SOAMatrix, Sonic Software, SpikeSource, StrikeIron, Sybase, Telelogic, Teradata, Thinstall, Thoughtworks, TIBCO Software, Tidal Software, VeriSign, Versant, Versata, Vertigo Software, Visual Numerics, Vitria, Vordel, Wakesoft, Web Age Solutions, WebLayers, Webmetrics, Websense, Wily Technology, WinMill Software, WSO2, XMethods, XMLCities, ZapThink, and Zend Technologies.