# Atria Software

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American software company

**Atria Software Inc.** was a software company that developed [ClearCase](/source/ClearCase) in the early 1990s.[1] It was founded by David B Leblang,[2] Paul Levine,[3] David Jabs[4] and others on January 11, 1990.[5] Some of the Atria developers had worked on an earlier system: *DSEE* ([Domain](/source/Apollo_Domain) Software Engineering Environment) from [Apollo Computer](/source/Apollo_Computer). After [Hewlett-Packard](/source/Hewlett-Packard) bought [Apollo Computer](/source/Apollo_Computer) in 1989, they left to form Atria.[6][7][8] Atria later merged with [Pure Software](/source/Pure_Software) to form Pure Atria.[9] That firm merged with [Rational Software](/source/Rational_Software), which was purchased by [IBM](/source/IBM) in 2003.[10] IBM continues to develop and market ClearCase.

## References

1. **[^](#cite_ref-1)** ["ClearCase - Atria Software Inc.'s software configuration management system - New Products: Development Tools - Brief Article - Product Announcement"](http://findarticles.com/p/articles/mi_m0SMG/is_n13_v12/ai_12606942). Software Magazine. September 15, 1992. Retrieved December 1, 2007.

1. **[^](#cite_ref-2)** ["The Sons of Apollo May Outshine the Original"](https://www.bloomberg.com/news/articles/1991-02-17/the-sons-of-apollo-may-outshine-the-original). Bloomberg. 1991.

1. **[^](#cite_ref-3)** ["CLK Design Automation Board of Directors"](https://web.archive.org/web/20071214060139/http://www.clkda.com/board_of_directors.html). CLK Design Automation, Inc. 2007. Archived from [the original](http://www.clkda.com/board_of_directors.html) on December 14, 2007. Retrieved December 1, 2007.

1. **[^](#cite_ref-4)** ["AccuRev Hires New VP, Former Rational ClearCase Creator"](https://web.archive.org/web/20070708173656/http://eon.businesswire.com/releases/accurev/clearcase/prweb509605.htm). Business Wire. March 6, 2007. Archived from [the original](http://eon.businesswire.com/releases/accurev/clearcase/prweb509605.htm) on July 8, 2007. Retrieved December 1, 2007.

1. **[^](#cite_ref-Atria-Software-Inc-Aug-1996-10-Q_5-0)** ["Atria Software Inc, Form 10-Q, Quarterly Report, Filing Date Aug 13, 1996"](http://edgar.secdatabase.com/1750/92701696000794/filing-main.htm). secdatabase.com. Retrieved May 14, 2018.

1. **[^](#cite_ref-6)** ["Key dates in Hardware/Software Configuration Management History"](http://www.cmcrossroads.com/cgi-bin/cmwiki/view/CM/HistoryOfCM). CM Crossroads LLC. 2007.

1. **[^](#cite_ref-7)** Michael Bucken (August 1995). ["Complex development earns Atria an IS role; hot Unix vendor's move to Windows and NT opens IS doors - Company Profile"](http://findarticles.com/p/articles/mi_m0SMG/is_n8_v15/ai_17338017). Software Magazine.

1. **[^](#cite_ref-8)** Andrew DeFaria (December 21, 2004). ["Re: cvs vs. clearcase?"](http://lists.gnu.org/archive/html/info-cvs/2004-12/msg00237.html). [Newsgroup](/source/Usenet_newsgroup): [lists.gnu.org](news:lists.gnu.org).

1. **[^](#cite_ref-9)** Lawrence M. Fisher (June 7, 1996). ["Pure Software To Buy Astria In Stock Deal"](https://www.nytimes.com/1996/06/07/business/pure-software-to-buy-astria-in-stock-deal.html). *The New York Times*. Retrieved December 1, 2007.

1. **[^](#cite_ref-10)** ["IBM Reports 2003 First-Quarter Results"](https://web.archive.org/web/20090802084645/http://www-03.ibm.com/press/us/en/pressrelease/243.wss). IBM. April 14, 2003. Archived from [the original](http://www-03.ibm.com/press/us/en/pressrelease/243.wss) on August 2, 2009. Retrieved January 9, 2008.

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Adapted from the Wikipedia article [Atria Software](https://en.wikipedia.org/wiki/Atria_Software) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Atria_Software?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.