Why Salesforce is Fortune's best company to work for in America

Salesforce Tower in Indianapolis stands taller than any other in the Indianapolis skyline. And the San Francisco-based company also stands taller than any other in the country on Fortune's list of 100 best companies to work for in the U.S.

Salesforce is one of four companies with Indiana ties on Fortune's list, which was released on Thursday. The other three were IT company Kronos Inc., FedEx and consulting firm Crowe Horwath LLP, all of which have significant operations in Indianapolis.

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Fortune credited Salesforce's "zealous encouragement of company philanthropy" and its focus on "Ohana," which is the Hawaiian word for family. Fortune also cites Great Place to Work's reviews of Salesforce, which are overwhelmingly positive.

97 percent of employees said they feel good about the ways they contribute to the community

96 percent said they are proud to tell people that they work at Salesforce

96 percent said Salesforce management is honest and ethical in its business practices

96 percent said Salesforce employees are willing to go the extra mile to get the job done

95 percent said employees of Salesforce care about each other

This is the first time Salesforce has topped the list, up from No. 8 last year, and its next-previously highest ranking of No. 7. The company plans to have 2,200 employees working in the building, plus its apprenticeship program.

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Salesforce reacted to the honor from Fortune on its website, saying, in part: "We are honored and humbled to be named to FORTUNE's list for the 10th year in a row, and we are proud to be featured alongside so many other inspiring companies that care about creating a culture of trust."

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Crowe Horwath LLP landed at No. 62 on the list, while Kronos Inc. and FedEx landed at Nos. 81 and 94. Here's what Fortune liked about each of those companies:

Crowe Horwath: Employees have a sense of "personal ownership" — the dress code isn't strict and 90 percent of the staff works remotely at least some of the time.

Employees have a sense of "personal ownership" — the dress code isn't strict and 90 percent of the staff works remotely at least some of the time. Kronos: Employees "feel like a family," CEO Aron Ain is an "amazing leader and human" and employees get unlimited paid time off.

Employees "feel like a family," CEO Aron Ain is an "amazing leader and human" and employees get unlimited paid time off. FedEx: The company has "numerous charitable initiatives."

To see which other 96 companies made the list, click here.

Andrew Clark is a digital producer for IndyStar. Follow him on Twitter @Clarky_Tweets.