Marc Fleury is a Franco-American computer scientist, physicist, musician and businessperson. He is a pioneer of the Open Source movement and the creator of JBoss, an open-source Java application server.

Fleury was born in Paris, France, to a French father and Spanish mother, and came to the US in the early nineties to work on his doctoral thesis as a visiting scientist at MIT. He earned his Ph.D.from the École Polytechnique, in Paris, France in 1997. He holds a Masters in Theoretical Physics from the École Normale Supérieure.^[1] rue d'Ulm (1993). His undergraduate degree was in Mathematics from the Ecole Polytechnique, Palaiseau (1992). He served in the military, as a paratrooper, with the rank of lieutenant in the 17th Parachute Engineer Regiment.^[2]

Fleury worked in France for Sun Microsystems before moving to the United States where he has worked on various Java projects.^[3] Fleury's research interest focused on middleware, and he started the JBoss project in 1999. JBoss Group, LLC was incorporated in 2001 in Atlanta, Georgia. JBoss became a corporation under the name JBoss, Inc. in 2004. Fleury pioneered business models of Open Source known as Professional Open Source.^[4] After selling his company to Red Hat, Fleury became Senior Vice President and General Manager of the JBoss Division. On 9 February 2007, his departure from Red Hat was made public.

In 2008, Fleury started a new open source project called OpenRemote, to build home automation systems.^[5]

Fleury co-founded the theater and electronic music act known as "The Church of Space" or "Poèmes Électroniques" (The CoS). The CoS served a 3 years residency (2016, 2017, 2019) at Moogfest Music and Arts festival.^[6] Poèmes Électroniques was featured on NPR public radio for its premiere in Atlanta in 2015.^[7] Since 2018 Poèmes Électroniques has been co-headed with Prof. Stuart Gerber of the Georgia State music dept.^[8][9]