In August 1988, Killelea formed the Australian company Integrated Research, which was listed on the Australian Stock Exchange in 2000. The company's main business is providing its PROGNOSIS performance monitoring software for business-critical computing and IP telephony environments used by corporations such as Visa, MasterCard and American Express; the New York, London and Hong Kong stock exchanges; and most of the world's ATMs. Killela retired from Integrated Research as Chairman in November 2018 to focus more time on his philanthropic interests. Killelea also has an IT venture capital fund named Smarter Capital, which is one of the investors behind Australian software firm Emagine International. Killelea set up The Charitable Foundation in 2000, one of Australia's biggest private overseas aid providers, spending over five million A$ in 2008. Killelea is the creative force behind the Global Peace Index study, launched in May 2007, that ranks the world's nations’ and regions’ peacefulness. The Index has been endorsed by the Dalai Lama, Desmond Tutu and Jimmy Carter. Killelea is the founder of the Institute for Economics and Peace which is "analysing the impact of peace on sustainability, defining the 'Peace Industry', estimating the value of peace to the world economy, and uncovering the social structures and social attitudes that are at the core of peaceful societies". In 2013, Killelea’s founding of IEP was recognized as one of the 50 most impactful philanthropic gifts in Australia’s history by a coalition including the Myer Family Company, The Myer Foundation and Sidney Myer Fund, Pro Bono Australia, Swinburne University and Philanthropy Australia. He is also notable as being one of Australia's largest individual donor to overseas aid. He sits on the advisory board of the Washington DC based Alliance for Peacebuilding, is a member of the Presidents Circle of the Club of Madrid, and is the Treasurer of Religions for Peace. In 2008, Killelea was the producer and chief financier for the documentary Soldiers of Peace, which was shown at the 2009 Cannes Film Festival, where it received The Club of Budapest World Ethic Film Award. The documentary also won Best Feature Film at the Monaco International Film Festival.
Honors
In June 2010, Killelea was appointed a Member of the Order of Australia for his service to the community through the global peace movement and the provision of humanitarian aid to the developing world.
Publications
Killelea, Steve. "Foreword" in Analytical Peace Economics: The Illusion of War for Peace, edited by Partha Gangopadhyay and Nasser Elkanj, Routledge, Taylor & Francis Group, 2017, pp. xiv-xv..
Killelea, Steve. "The Economic Opportunity of Improving Peace in the United States" in Learning from the World: New Ideas to Redevelop America, edited by Joe Colombano and Aniket Shah, Palgrave Macmillan, 2014, pp. 254-266..
Killelea, Steve. "Chapter 9: Studying and Creating Peace" in On World Religions: Diversity, Not Dissension, edited by Anindita N. Balslev, SAGE Publications Pvt. Ltd., 2014. .
Killelea, Steve. "The pillars of peace: identifying the elements that allow human potential to flourish" in The Necessary Transition: The Journey Towards the Sustainable Enterprise Economy, edited by Malcolm McIntosh, Greenleaf Publishing Limited, 2013, pp. 119-131..
Killelea, Steve. "Fact Based Approaches to Peace Making: Global Peace Index" in Peacemaking from Practice to Theory, edited by Susan Allen Nan et al., vol. 2, Praeger Security International, 2011, pp. 438-457. .
Killelea, Steve. "Shared Societies and Peace: The ends and means of development" in Development, vol. 57, Issue 1, Palgrave Macmillan, 2014. pp. 6470.
Killelea, Steve. "Chapter 4- Australia: An Evolution of Personal Giving and the Business of World Peace" in Global Philanthropy, edited by Norine MacDonald and Luc Tayart de Borms, MF Publishing, 2010, pp. 43-59..
Killelea, Steve. "Chapter 10: Pillars of Peace" in Why Love Matters: Values in Governance, edited by Scherto Gill and David Cadman, Peter Lang International Academic Publishers, 2015, pp. 133-149. /.
Killelea, Steve, and Roland Schatz, editors. Global Peace Report 2010, InnoVatio Ltd., 2010,.
Killelea, Steve, and Roland Schatz, editors. Global Peace Report 2011, InnoVatio Ltd., 2011,.