Berkeley, CA, USA – April 15, 1999 – The Institute for Scientific Information (ISI) today announced the acquisition of Niles Software, Inc. and the formation of a new company, ISI ResearchSoft. Berkeley,California-based Niles Software, creators of the EndNote bibliographic management program, will combine forces with another ISI subsidiary, Research Information Systems (RIS) of Carlsbad, California, to form the new organization. The new company will be headquartered in Berkeley, California with continuing operations in Carlsbad, California. Richard K. Niles, former president of Niles Software, and David L. Kochalko, former president of RIS, will lead ISI ResearchSoft as President and Chief Operating Officer, respectively. In this new company, ISI ResearchSoft brings together a suite of leading bibliographic software products (EndNote, ProCite and Reference Manager) that complement the databases of ISI and other information providers such as Ovid Technologies®, SilverPlatter® and OCLC.

Strategic Fit and Market Growth
ISI has acquired Niles Software based on its history of bringing innovative products to market, its customer-oriented organization, and the strategic fit of EndNote with ISI's existing database and bibliographic management software products. ISI has a large and diverse customer base for which the suite of bibliographic management products offer valuable support. "We are excited about bringing Niles Software and EndNote into ISI," said Leslie Singer, President and Chief Operating Officer of ISI. "With its strong reputation for product innovation, large customer base, and compatibility with other leading database providers, EndNote adds to our existing strength in bibliographic software and will play an important role in our future development plans."

In recent years, the bibliographic software market has experienced unprecedented growth with over 300,000 researchers, students and librarians worldwide now using EndNote, ProCite, or Reference Manager. This acquisition brings together these products and the skilled people behind them in an organization dedicated to their continued support and development. "Going forward, ISI plans to rely on this new team to create new and innovative information products for the research community. Bibliographic management software will become an invaluable tool for accessing critical information over the Internet," added Singer.

Customer Benefits and Product Plans
"Both Niles Software and RIS have been vibrant and highly successful businesses and we believe our customers will benefit from the formation of this new organization," said Richard K. Niles, President of ISI ResearchSoft. "By bringing our products and talented staffs together we will be able to offer cross-product compatibility and introduce new developments more quickly for all of our customers," added Niles.

"ISI ResearchSoft will actively support all of our products. Since bringing ProCite into our organization in 1996, we have released successful upgrades of ProCite and Reference Manager, and we introduced Reference Web Poster™. We intend to maintain the same level of commitment to EndNote and will continue to respond to the needs of all our customers," said David Kochalko, Chief Operating Officer of ISI ResearchSoft. The new Reference Manager 9 was released on April 14 and development of EndNote and ProCite will continue. Initiatives underway to allow the one-step export of references into these products from leading information databases such as ISI, Ovid, SilverPlatter, and others will also continue.

About ISI ResearchSoft
ISI ResearchSoft is headquartered in Berkeley, California. More information about ISI ResearchSoft products may be obtained at www.endnote.com, www.procite.com or www.refman.com or contact:

ISI ResearchSoft
800 Jones Street
Berkeley, CA 94710
Voice: 510-559-8592
Fax: 510-559-8683
Web Contact Form: Product Information Request

About ISI
The Institute for Scientific Information is headquartered in Philadelphia, PA, and has offices worldwide. ISI produces information databases for researchers, information specialists, and administrators in diverse fields: chemistry, technology, pharmaceuticals, healthcare, engineering and business. Today, ISI maintains the most comprehensive, multidisciplinary, bibliographic database of research information in the world. This database covers over 16,000 international journals, books and proceedings. These products are available in a variety of formats with recent emphasis on Web-based delivery.

More information about ISI and its products is available at www.isinet.com or contact:

Jacqueline H. Trolley, Director, Corporate Communications
Institute for Scientific Information
3501 Market Street
Philadelphia, PA 19104
Voice: 215-386-0100, extension 1449
E-mail: jtrolley@isinet.com

ISI ResearchSoft - Carlsbad
2355 Camino Vida Roble
Carlsbad, CA 92009 USA
Telephone: 800.722.1227 or 760.438.5526
Fax: 760.438.5573
Web Contact Form: Product Information Request

ISI ResearchSoft Europe
Brunel Science Park, Bld. 1
Brunel University
Uxbridge, UB8 3PQ
Telephone: 44.1895 270016 Ext. 138
Fax: 44.1895.258859
E-mail: uksales@isiresearchsoft.com