The Company history begins at 1991, when Argussoft Company was created under Professor E.G. Oykhman guidance.

The main directions of its activity were promotion of object-oriented (OO) technology and development of custom application software spread in Russia and CIS countries. The company was the first in the country to become an official distributor of Rational software products, including the system of visual modeling Rational Rose.

By 1996 Argussoft Company has implemented its own technology for design and development of a software based on the Rational Unified Process (RUP) and Rapid Application Development (RAD), which was patented in the United States and continues to be improved in accordance with the latest achievements in the field of OO technology. In these years the specialists of the Company have successfully completed more than a hundred of development projects as for organizations such as the Central Bank of the Russian Federation, the Central election Commission of the Russian Federation, the national Bank of the Republic of Tatarstan, Kazakhtelecom, Renaissance Software Inc., NeopostOnline, Dymo, Caterpillar and others.

In 1998 the Company received the Certificate of conformity to International standards ISO 9001 in the field of information systems applied software ". Certification of company technologies was held by the leading American company – Registrar Perry Johnson Registrars, Inc. In the same year the company CorePartners was created. The close cooperation between the companies has successfully performed hundreds of development projects both for Russian and foreign companies in the USA, Great Britain, China and other countries.

In 2007, in connection with the division of Argussoft Company, its structural subdivisions, engaged in the development of software, entered into the composition of the CorePartners, forming the Moscow Development Centre. In subsequent years, branches in Kyiv (Ukraine), Zelenograd, Kaluga and Voronezh were organized. CorePartners headquarters is located in the USA.