By Sara Lin from The Wall Street Journal Asia

Billionaire software entrepreneur and philanthropist Tom Siebel is offering a 62,000-acre Montana cattle ranch for $45 million.

About 90 miles north of Billings, Mont., the property, N Bar Ranch, is one of the state's oldest and largest cattle ranches.

N Bar, founded in 1885 and comprising grassy foothills and valleys, open meadows and aspen forests, supports 1,500 head of cattle and specializes in raising purebred Aberdeen Angus cows.

The white frame buildings of the original ranch headquarters are part of the National Register for Historic Places.

Crossed by several trout-filled creeks and streams, the 97-square-mile ranch includes about 51,400 deeded acres and about 10,600 acres of leased lands. There's a 2,500-square-foot farmhouse, a guest house and an airstrip.

Mr. Siebel, 57 years old, bought the property nine years ago. A former Oracle Corp. executive and onetime protégé of Oracle chief executive Larry Ellison, Mr. Siebel later founded Siebel Systems Inc., which made software that helped companies manage sales representatives and interact with customers, and sold his company to Oracle in 2006 for $5.8 billion.

He is founder and chairman of the Meth Project, an anti-methamphetamine campaign. Joel Leadbetter of Hall and Hall has the listing.

This article has been republished from Wall Street Journal