HubSpot, Inc. is a US-based developer and marketer of software products for inbound marketing, sales, and customer service. HubSpot was founded by Brian Halligan and Dharmesh Shah in 2006. The global headquarters is in Cambridge, MA.

The company grew rapidly from $255,000.00 in revenues in 2007 to $15.6 million in 2010. Later that year, HubSpot acquired Oneforty, the Twitter app store founded by Laura Fitton. The company also introduced new software for personalizing websites for each visitor. According to Forbes, HubSpot started out targeting small companies but "moved steadily upmarket to serve larger businesses of up to 1000 employees."

HubSpot filed for an IPO with the Securities and Exchange Commission on August 25, 2014, requesting to be listed on the New York Stock Exchange under the ticker symbol HUBS. They raised more than $140 million dollars by selling shares for $25, which then peaked at $840 in November 2021.

In July 2017, HubSpot acquired Kemvi, which applies artificial intelligence and machine learning to help sales teams. The company reported revenues of $1 billion in 2021.

In February 2021, Axios reported that HubSpot would be acquiring The Hustle, a content and email newsletter company focused on small business owners and entrepreneurs.

In September 2021, HubSpot announced Yamini Rangan as their new CEO, while Brian Halligan stepped out of the role and became an Executive Chairman at the company.

On January 31, 2023, HubSpot announced the first layoffs in the company's history. Affecting approximately 500 employees, this layoff eliminated 7% of its total workforce. On the same day, HubSpot also announced plans to restructure its Cambridge campus, centralizing operations within a nearby office the company had already been leasing.

Hubspot announced its acquisition of B2B intelligence firm Clearbit in November 2023.