Who are the best B2B eCommerce consultants in the San Francisco Bay
Area?  Specifically, I am looking for companies that have significant
experience building customized shopping cart solutions that integrate
a complex corporate legacy system.  The integration piece is crucial. 
It is also important that the company be able to demonstrate fantastic
looking front end design.  Any ideas?

Hi! Thanks for the question.

Here is a list of companies that has experience in making web services
with B2B and legacy systems integration.

Contivo
2880 Zanker Rd., Suite 203 
San Jose , CA 95134 
Tel : (650) 426-4000 
Fax: (650) 426-4001 
Email: saleswest@contivo.com
http://www.contivo.com 

Tibco
3303 Hillview Avenue
Palo Alto, CA 94304 USA
Phone: 650-846-1000
Fax: 650-846-1005
http://www.tibco.com 

Infoscaler
1825 De La Cruz Boulevard
Suite 201
Santa Clara, CA95050
Phone: 408-333-9850
Fax: 408-516-9510
Email: info@infoscaler.com 
http://www.logicool.com 

Zenith Infotech Inc. (Singapore company with US Branch)
39675 Cedar Blvd. Suite # 240B
Newark
CA ? 94560 USA
Tel : ++1 510-687-1943
Fax : ++1 510-687-1944
E-mail : sales@zenithinfotech.com.sg
http://www.zenithinfotech.com.sg/turnkey/turnkey.htm

Fiorano Software, Inc.
718 University Avenue, Suite 212
Los Gatos, CA 95032 U.S.A.
Tel: +1-408-354-3210
1-800-663-3621 (Toll-Free within the USA)
Fax: +1-408-354-0846
Email: info@fiorano.com

Creative Science Systems, Inc.
1901 S. Bascom Ave.
Pruneyard Tower Suite 800-840
Campbell, CA 95008
Tel: 408.369.1555
Fax: 408.369.1558
http://www.creativescience.com 

eForce
555 Twin Dolphin Drive, 
Suite 620, Redwood City, 
CA 94065-2129
Phone: 650.587.3866 
Fax: 650.594.4378
Email: info@eforceglobal.com
http://www.eforceglobal.com 

Cape Clear Software Inc.
2929 Campus Drive, Suite 400
San Mateo, CA 94403
Tel: (888) 227 3439
Email: info@capeclear.com
http://www.capeclear.com/ 

Itemfield
1820 Gateway Drive
Suite 360
San Mateo, CA 94404
USA
Sales Inquires: +1-888-239-2299
Toll Free: +1-800-838-1055
Phone: +1-650-577-8850
Fax: +1-650-356-2190
http://www.itemfield.com/about/alien_data.aspx

E2open 
1600 Seaport Blvd. 
5th Floor
Redwood City
California 94063
Email: sales_us@e2open.com
http://www.e2open.com/

NetManage, Inc.
20883 Stevens Creek Blvd.
Cupertino, CA 95014
USA
Phone: +1.408.973.7171 / +1.800.558.7656
Fax: +1.408.257.6405
Email: sales@NetManage.com
http://www.netmanage.com

ERENA Software, Inc.
2755 Campus Drive, 3rd Floor
San Mateo, California 94403  USA
Phone: Toll Free: 800-457-3736 / +1-650-522-6600
Fax: +1-650-522-6699
http://www.serena.com 

Inovis
1400 Marina Way South
Richmond, CA 94804
Phone: +1 510.215.5000
Fax: +1 510.610.3980
Email: info@inovis.com
http://www.inovis.com


Search strategy used:  
Searched cities within the Bay Area for the following terms:
b2b legacy integration  

I hope this would help you in your research. Before rating this
answer, please ask for a clarification if you have a question or if
you would need further information.
                                                          
                              
Regards,                              
Easterangel-ga                              
Google Answers Researcher

Deloitte Consulting LLP is a global leader in systems integration with
work on large-scale e-commerce business-to-business solutions. We
currently have a multi-million dollar project with with a Fortune 1000
company to revamp their b2b website with a slick user interface as
well as many previous similar projects with great success. You can
email me at tompai@gmail.com and I can lead you to the appropriate
individuals who can work with your company on a possible project. Key
questions I need to have answered include how large is your company
and approximate budget if any. Thanks.

Follow-up to the previous comment. Deloitte Consulting LLP has
locations in the Bay Area (as well as globally) with many clients in
the Bay Area.

Systems Integration  
Benefits include:

Cost savings and rapid implementation through time-tested and
well-defined delivery models
Business improvement and cost savings through application change from
legacy to Web-enabled platforms
Lower cost, faster implementation and higher quality delivery of
development through onsite/offsite/offshore models
Lower risk and higher quality through dedicated testing services
Lower cost, higher quality and rapid delivery through dedicated data
migration and conversion services
Capability transfer of world class IT development standards for both
package and custom implementations

Enterprise Portal Services    
 
Our Enterprise Portal Services creates a platform for one-stop access
to all the information assets of your enterprise. Using a standard Web
browser, people can easily find and use exactly the data, applications
and business processes they need.

Related Case Studies:

http://www.deloitte.com/dtt/case_study/0,2300,sid=26562&cid=56486,00.html