|Traded as||Euronext: BULL|
|Headquarters||Les Clayes-sous-Bois, France|
Bull SAS (also known as Groupe Bull, Bull Information Systems, or simply Bull) is a French-owned computer company headquartered in Les Clayes-sous-Bois, in the western suburbs of Paris. The company has also been known at various times as Bull General Electric, Honeywell Bull, CII Honeywell Bull, and Bull HN. Bull was founded in 1931, as H.W. Egli - Bull, to capitalize on the punched card technology patents of Norwegian engineer Fredrik Rosing Bull (1882–1925). After a reorganization in 1933, with new owners coming in, the name was changed to Compagnie des Machines Bull.
The company has undergone many takeovers and mergers since its formation. In particular, it has had various ownership relations with General Electric, Honeywell, and NEC from the 1960s to the 1980s; and with Motorola, Debeka, and France Télécom more recently. It acquired Honeywell Information Systems in the late 1980s, and later also had a share of Zenith Data Systems and Packard Bell. Bull was nationalised in 1982 and was merged with most of the rest of the French computer industry. In 1994, the company was re-privatised.
Bull has a worldwide presence in more than 100 countries, and is particularly active in the defense, finance, health care, manufacturing, public and telecommunication sectors.
In August, 2014 the French IT company Atos announced that it had acquired a controlling stake in Bull SA through a tender offer launched in May. Atos announced plans in October, 2014 to buy out or squeeze out the remaining share and bondholders.
Bull launched the Hoox m2, the first integrally secured European smartphone. The Hoox range of secure mobiles and smartphones ensures confidentiality of voice, SMS, e-mail and data communication.
On 31 July 1919 an engineer named Fredrik Rosing Bull filed a patent for a "combined sorter-recorder-tabulator of punch cards" machine that he had developed with financing from the Norwegian insurance company Storebrand. Storebrand integrated his device into its operations in 1921. The following year Bull sold his second machine to the Danish insurer Hafnia who had learned of the technology through an article in an insurance trade magazine. At the time of Bull's death of cancer in 1925 at the age of 43, a dozen of his machines had been sold to different companies throughout Europe. The commercial and technical development of the machines continued under the direction of Bull's childhood friend and long-time collaborator Reidar Knutsen along with his brother Kurt Andréas Knutsen.
As the business grew several outside investors were brought in, leading to the incorporation of the company H.W. Egli Bull in 1931.  In 1933 more investors joined and the company changed its name to Compagnie des Machines Bull, a name it would keep until 1964.
Products and services
- NovaScale servers (GNU/Linux and Windows), Escala servers (AIX) and mainframes GCOS (design, manufacturing, distribution)
- Data storage and backup systems, cloud computing infrastructure
- Mobile/smart phones (Hoox)
Software and services
- Open source (Novaforge.org portal)
- Information technology consulting and services, custom solutions development for clients
- Systems integration
- Human resource and social welfare management systems
- Managed services and web hosting
- Public key infrastructure
- Electronic signature solutions
- Encryption solutions (hardware and software)
- Digital payment security
- Identity, authentication and access management
- High availability and disaster recovery
- Systems and network monitoring
- Bull SAS
- Bull International SAS
- Evidian (Security; identity and access management)
- Serviware (high performance computing)
- Amesys SAS :
- Amesys Consulting (including Amesys International)
- Amesys RSS (including TRCOM)
- Elexo (networking and telecommunications equipment)
Amesys, a Groupe Bull subsidiary specializing in defense and aerospace-related systems and software, became embroiled in controversy in 2011 when it was revealed that it had sold an internet monitoring system to the Muammar Gaddafi regime of Libya in 2007. The Eagle System was used by the Gaddafi regime to spy on citizens and foreign journalists. On 12 March 2013 Reporters Without Borders named Amesys as one of five "Corporate Enemies of the Internet" and “digital era mercenaries” for selling products that have been or are being used by governments to violate human rights and freedom of information. A judicial inquiry was opened by the French government in May 2012 following allegations of complicity in torture by the International Federation for Human Rights (FIDH). In March 2012 Groupe Bull divested itself of the Eagle System, selling it for the sum of 4 million euros to Nexa Technologies, a company run by a former Amesys CEO.
- "Heide, Lars (2002) ''National Capital in the Emergence of a Challenger to IBM in France''" (PDF). Retrieved 2014-08-25.
- "Atos succeeds in bid to buy Bull". Retrieved 2014-10-11.
- "Atos to launch buyout of last 5% of Bull shares, bonds". Retrieved 2014-10-11.
- "Histoire de Bull". Retrieved 2014-10-11.
- "Bull et le 20ème arrondissement", sur le Site personnel de François Holvoet-Vermaut 
- url = http://www.feb-patrimoine.com/Histoire/tabsyn/ts10.htm#A195
- "Corporate Enemies: Amesys", The Enemies of the Internet, Special Edition: Surveillance, Reporters Without Borders, 12 March 2013
- "Firms Aided Libyan Spies ", Paul Sonne and Margaret Coker, Wall Street Journal, 30 August 2011
- "Life Under the Gaze of Gadhafi's Spies ", Margaret Coker and Paul Sonne, Wall Street Journal, 14 December 2011
- "Advanced Middle East Systems et Nexa vont faire le voyage depuis Dubai Billancourt". Retrieved 2014-10-08.
- Pierre E. Mounier-Kuhn (1998). "Bull: A World-Wide Company Born in Europe". IEEE Annals of the History of Computing. pp. 279–297. Retrieved 2009-07-08.
- History of Bull Extracted and translated from Science et Vie Micro magazine, No. 74, July–August, 1990: The very international history of a French giant
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