Form: 20-F

Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

February 28, 2024

Exhibit 8.1
LIST OF SUBSIDIARIES


Company Name Jurisdiction of Incorporation
Similarweb Inc. Delaware
Similarweb UK Ltd. United Kingdom
Similarweb Japan K.K. Japan
Similarweb Australia Pty Ltd. Australia
Similarweb Germany Gmbh Germany
Similarweb France SAS France
Similarweb SG Pte Ltd. Singapore
Embee Mobile Inc. Delaware
Similarweb CZ s.r.o Czech Republic