The short answer. The six credible SimilarWeb alternatives in 2026 are : Derrick (€9/month, runs inside Google Sheets), BuiltWith ($50/month per tech filter), Wappalyzer ($250/month), Apollo (free tier, then $49 per seat per month), ZoomInfo (~$15,000/year, 3-seat minimum) and HG Insights (~$40,000/year, custom). SimilarWeb itself starts at $199/month for Pro and climbs past $14,000/year for Sales Intelligence, which is the reason most teams start looking.
Start by naming the job, because it splits the list in two. If the job is estimating someone else's traffic, you want a traffic measurement tool, and the table below ranks the six on price and depth. If the job is turning a list of companies into contact and company data you can actually work, that is a different product, and it is what Derrick does : emails, direct phone numbers, company records and technology detection, billed per row from €9 a month on the Mini plan. The free plan, 100 credits a month and no card, covers LinkedIn import and enrichment, which is enough to see the shape of the data before paying.
SimilarWeb is a web traffic and competitive intelligence platform : 100M+ sites measured for traffic, engagement, marketing channels, and audience overlap. Free tier with limited data, paid plans from $199/mo for Pro and $14K+/yr for Sales Intelligence. Aimed at marketing teams and sales targeting traffic-defined ICPs ; heavy for general prospecting.
If SimilarWeb isn't fitting (typically because of pricing climbs fast above the $199 entry tier, pricing scale, or stack misalignment), there are 6 credible 2026 alternatives worth shortlisting. This guide ranks them by price, feature depth, and ICP fit so you can shortcut the procurement comparison.
Featured alternative : Derrick App - the Sheet-native option from €9/month, also reachable through a REST API and an MCP server, with a web app on the way. The 6-option comparison below is structured to let you filter by budget, workflow, or geographic priority in under a minute.