It provides software and cloud solutions for simulation, IoT, high performance computing (HPC), data analytics, and artificial intelligence (AI).

[18] Its software also found uses in other sectors, including aerospace (NASA),[19] aviation (Airbus),[13] consumer electronics (Nokia),[19] and toy manufacturing (Mattel), among others.

[13] Also in 2002, Altair opened offices in Seongnam, South Korea and Shanghai, China,[20] adding those locales to its international footprint alongside India where it had begun investment in 1992.

[22] Also in 2004, Altair partnered with General Motors and the United States Department of Defense on the design and construction of a new military vehicle.

[23] Altair also branched out into the life sciences, finance, and pharmaceutical industries with its high performance computing software, PBS Professional,[21] which it had acquired the rights to in 2003.

[21] In 2007, it spun off a new wholly-owned subsidiary called ilumisys, which would focus on light-emitting diode (LED) lamps[25] designed to be used as direct replacements for fluorescent light tubes.

[31] In the years leading up to the IPO, Altair acquired 11 different companies with strategic assets and expertise in fields like material science, electronics, industrial design, rendering, and others.

The updates were implemented to improve workflows and provide access to a broader set of tools for data analytics, machine learning, and physics.

[36] In January 2021, Altair announced that it would collaborate with Rolls-Royce Holdings on a project using AI and machine learning to improve the aero jet engine design process.

[37] In November 2021, Altair's PBS Professional workload manager was selected by the Argonne National Laboratory to be used across the organization's high performance computing (HPC) systems, including the Polaris and Aurora supercomputers.