More than 5,000 are reported to be either dead or missing after hijacked airplanes hit the World Trade Center and the Pentagon on Tuesday.
A partial list of contributors follows.
Computer Associates International, a New York-based company that delivers software for e-businesses, said Thursday that it will contribute $2 million to a fund dedicated to children in New York who have lost a parent as a result of Tuesday's terrorist attacks. CA also offered to assist New York businesses on a pro-bono basis with the restoration of data and computing services.
Software giant Microsoft said Wednesday that it will donate $5 million in cash and an additional $5 million in technical services to relief efforts. The cash donation will go to The September 11 Fund, created by the United Way and The New York Community Trust for established emergency-assistance agencies providing immediate support in cities affected by the events.
Cisco Systems, which makes computer-networking equipment, said that it will donate about $6 million to select aid groups to support efforts in New York and Washington.
Applied Materials, a giant maker of chip-manufacturing equipment, said that it will donate $250,000 to relief efforts and match employee donations up to an additional $750,000.
Security provider Network Associates said it is pledging $250,000 to The September 11 Fund; it will also match all employee donations to relief organizations. The Santa Clara, Calif.-based company added that it is offering software, support and any assistance necessary to organizations that are involved in the disaster relief efforts. Magic Solutions, a division of Network Associates, said it has donated 1,000 phone cards to the American Red Cross, which will be distributed to people attempting to contact family and friends.
Fiber optic cable maker Corning said that, through the Corning Foundation, it will contribute $200,000 to relief efforts in New York and Washington. The foundation said it will donate $100,000 to the September 11th Fund and $100,000 to the American Red Cross Disaster Relief Fund. It also will contribute $1 for every $1 donated by Coring employees and retirees to the Disaster Relief Fund.
Phone service carrier WorldCom said it is offering resources, technology and other support for the disaster relief efforts in New York and Washington. The Clinton, Miss.-based company is assisting the American Red Cross through donations of office space, telephones and local and long-distance service. In addition, WorldCom is donating long-distance service, two-way pagers and telecommunications network switches to disaster workers and government agencies so they can maintain communications in New York City.
Wireless equipment maker Motorola said it deployed crisis teams to assist authorities after Tuesday's attacks. The company said it has shipped thousands of mobile radios, batteries, base stations and other communications equipment to New York and Washington.
"All citizens of the world were affected by these tragic events, and we are committed to assisting those who are suffering," James Morgan, chief executive of Applied Materials, said in a statement. "Our hopes and thoughts are with the victims and families affected by these terrible tragedies."
Reuters and The Associated Press contributed to this report.