The company raised its Series A round of $1.1 million,[5] with the investment being led by Yossi Vardi, and Docor International Management.

SimilarSites, a browser extension to help users find sites similar to those they are visiting, was launched later.

On September 24, 2013, the company closed a Series B round led by David Alliance, Moshe Lichtman with the participation of existing investor Docor International Management.

[7][8] In July 2015, Similarweb acquired personalized content discovery platform developer Swayy.

[12][13] In October 2021, Similarweb won "Best Alternative Data Provider" at Hedgeweek Americas Awards 2021, for their Investor Intelligence suite.

[16] Similarweb develops tools that enable the analysis of the traffic and behavior of users on websites and apps.