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EXHIBIT 21.1

SUBSIDIARIES OF REGISTRANT*

Wind River Systems GmbH, an Austrian corporation.

Wind River Systems FSC, Inc., a Barbados corporation.

Wind River International Limited, a Canadian corporation.

Wind River Novia Scotia Company, a Canadian corporation.

Wind River S.A.R.L., a French corporation.

Wind River GmbH, a German corporation.

Wind River S.r.l., an Italian corporation.

Wind River K.K., a Japanese corporation.

Wind River Scotland Ltd., a Scottish corporation.

Wind River AB, a Swedish corporation.

Wind River AG, a Swiss corporation.

Wind River UK Limited, a United Kingdom corporation.

Wind River Sales Co., Inc., a California corporation.

Wind River Services, Inc., a Delaware corporation.

Wind River Systems International, Inc., a Delaware corporation.

WRC Technology, Inc., a Delaware corporation.

Embedded Support Tools Corp., a Massachusetts corporation.

Integrated Systems, Inc., a California corporation.

Integrated Systems ISINC (Israel) Ltd.

Rapid Logic, Inc., a Delaware corporation.

Zinc Software, Incorporated, a Utah corporation.

*

100% owned

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EXHIBIT 21.1

SUBSIDIARIES OF REGISTRANT