来点有用的，全球40几家主要＂云＂公司名录

在门外汉看来，其实，＂云＂的发展是要让信息需求utility 化， 公共事业化，就象多数私人和公司不自己发电，打水一样。下面是世界股票期权交易所做的一个云指数index

Rackspace Hosting, Inc.

SAP AG (ADR)

Aruba Networks, Inc.

NetSuite, Inc.

Netflix Inc.

Open Text Corporation

Akamai Technologies, Inc.

Google Inc.

Oracle Corporation

Salesforce.com, Inc.

Amazon.com, Inc.

Cisco Systems, Inc.

Equinix, Inc.

Juniper Networks, Inc.

NetApp Inc.

EMC Corporation

VMware, Inc.

TIBCO Software Inc.

F5 Networks, Inc.

Red Hat, Inc.

Acme Packet, Inc.

Teradata Corporation

Apple Inc.

International Business Machines Corporation

Microsoft Corporation

Brightcove Inc.

Informatica Corporation

Hewlett–Packard Company

OPNET Technologies Inc.

Zynga Inc.

j2 Global Inc.

Financial Engines, Inc.

NetScout Systems, Inc.

Adobe Systems Incorporated

Intuit Inc.

Activision Blizzard, Inc.

Iron Mountain Incorporated

Wipro Ltd. (ADR)

BMC Software, Inc.

Polycom, Inc.

CA Inc.

Check Point Software Technologies Ltd.