[7] In 1976, a group of eight engineers, all former employees of Delhi Cloth & General Mills, led by Shiv Nadar, started a company that would make personal computers.

Puri, Yogesh Vaidya and Subhash Arora) started selling teledigital calculators to gather capital for their main product.

[16] In 1993, HCL also started providing enterprise IT infrastructure management services, winning an order to establish India's first floorless, electronic stock exchange for NSE.

[16] By the early-2000s, its wholly-owned subsidiary HCL Comnet had expanded its offerings from VSAT to include network security and IT infrastructure services.

[28] In 2019, HCL Technologies acquired products of IBM including AppScan, BigFix, Commerce, Connections, Digital Experience (Portal and Content Manager), Notes/Domino, and Unica.

[31] In May 2024, HCLTech announced the acquisition of select assets of Communications Technology Group, a business division of Hewlett Packard Enterprise (HPE), for $225 million.

[33] After the completion of the acquisition, Zeenea is expected to continue operating as an independent unit under Actian, HCLSoftware's data & analytics division.

It has establishments in Australia, China, Hong Kong, India, Indonesia, Israel, Japan, Malaysia, New Zealand, Saudi Arabia, Singapore, South Africa, the United Arab Emirates, Qatar, Morocco and Sri Lanka.

[58] In Europe, it covers Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Romania,[59] Finland, France, Germany, Italy, Lithuania, Netherlands, Norway, Poland, Sweden, Switzerland, Portugal, and United Kingdom.