Similarweb alternatives

Reachkit makes a competing cold email tool with a built-in lead database, and it’s one of the nine options below. I checked each price against the vendor’s own pages in October 2026, and figures from buyer-data sites like Vendr are labeled.

Similarweb estimates traffic, keywords, ads and AI visibility for any website. If you used it to decide which companies to sell to, replace the part you actually relied on:

• Company research at a self-serve price: Crunchbase, for funding and growth signals.
• Traffic signals from your own site: Leadfeeder, which names the companies visiting you.
• Account intent for a large team: 6sense, quote-only.
• Contacts and sequences for less: Apollo, with a free plan.
• Contact data at enterprise depth: ZoomInfo, quote-only.
• Target accounts turned into cold email, sending included: Reachkit.
• Many data sources in one table: Clay.
• Company data by API with no contract: Explorium.
• AI agents that research the open web: Exa.

If you used Similarweb for SEO, ads or market sizing, this list won’t replace it. The pages ranking for this search point to SEO suites such as Semrush and Ahrefs, which I haven’t reviewed here.

Similarweb’s own self-serve plans run $99 to $649 a month in US prices, one user each, as of October 2026.

Crunchbase is a database of mostly private companies: funding rounds, investors, acquisitions, firmographics and people. Since a 2025 relaunch it also forecasts funding, growth, acquisitions and IPOs. It fits sellers who pick accounts by “just raised” or “growing fast” rather than by site traffic.

Price (October 2026): a free account shows 5 results per search with no exports. Pro costs $99 a month per seat, month to month. New users can instead pay $588 for a first annual year (38% off); the checkout page lists $79 a month as the regular annual rate. Business goes through sales; its pricing page, as shown in search results, says from $199 a month billed annually.

Strengths:

• No sales call to start: a 7-day Pro trial and a monthly plan you can cancel.
• Timing signals: heat scores and list alerts on Pro. Its plan comparison puts funding and acquisition forecasts on Business only, though a help article lists them for Pro.

Drawbacks: refunds only within 7 days of a payment, and none if you exported anything, even during the trial. Pro caps exports at 2,000 rows a month. Contacts cover far fewer companies than the company data, roughly 18 million people at 400,000 organizations, with US companies prioritized.

Versus Similarweb: an entry price close to Similarweb’s Sales Intelligence plan ($99 a month billed yearly), but funding and growth data instead of traffic and tech signals. See the Crunchbase profile.

Leadfeeder puts a tracker on your site and matches visitor IP addresses to companies, then alerts you and pushes those accounts to your CRM. By its own figure it recognizes “up to 45%” of visiting companies. It reports the business behind a visit, not the individual. The company ran as Dealfront from 2023 until it took the Leadfeeder name back in March 2026.

Price (October 2026, in euros only): Lite costs nothing and covers up to 100 identified companies a month, keeping a week of history. Discover starts at €79 a month billed yearly (€113 monthly), Activate at €369 (€527) with verified emails and phones, and Scale at €599, with no monthly option.

Strengths:

• Unlimited users on every plan, Lite included, with one shared credit pool.
• Every tier below Enterprise has a public price, and paid plans with API access include an MCP server at no extra cost.

Drawbacks: a yearly plan rolls over unless you give notice 30 days or more before the term ends, and several reviewers on Trustpilot and Capterra report getting no reminder first. Contacts start on Activate and cost credits.

Versus Similarweb: Similarweb estimates anyone’s traffic; Leadfeeder records who visits yours. A company already reading your pricing page is a stronger reason to reach out than a traffic estimate. See the Leadfeeder profile.

6sense is an account-based marketing and sales intelligence platform that shows which companies are researching a purchase and how close they are to buying. It combines IP-matched website visits, its own B2B intent network, optional G2 and Bombora intent, and predictive scores. It fits B2B teams that work a defined list of target accounts on a yearly budget.

Price (October 2026): not published. The pricing page lists three Sales Intelligence bundles behind “Book a Demo”. Vendr’s purchase data (386 purchases, updated February 2026) shows a median near $62,000 a year. 6sense shut its free plan on August 12, 2026 and publishes no trial.

Strengths:

• Intent data is its most praised feature in G2’s review summary, and every Sales Intelligence bundle includes technographics, third-party intent and website visitor identification.
• Six years running as a Leader in Gartner’s ABM platforms Magic Quadrant, 2026 included, per 6sense.

Drawbacks: no price before a demo. “Inaccurate Data” is a top review tag on G2’s Sales Intelligence listing, and setup takes work: Capterra and G2 reviewers mention configuration effort and a learning curve.

Versus Similarweb: Similarweb’s quote-only Sales Business package includes 2 custom intent topics; 6sense is built around intent, with no self-serve way in and a higher Vendr median (about $62,000 against Similarweb’s $37,800). See the 6sense profile.

Apollo combines a B2B contact database with email sequences, a built-in dialer and CRM sync. By its own count it covers 240M+ contacts and 30M companies, and it added Bombora intent data in June 2026. It fits small teams that found accounts in Similarweb and then needed the people and the emails.

Price (October 2026): the free plan gives 75 credits a month. Paid seats run $49 (Basic, with 2,500 credits a month), $79 (Professional) and $119 (Organization, three seats minimum) per month on yearly billing; monthly billing is $65 for Basic and $99 for Professional. One credit buys an email, eight a mobile number.

Strengths:

• Public prices and a free plan you can keep.
• Sequences, mailbox warmup and done-for-you domains sit next to the data. Verified emails sent through Apollo within 30 days of buying them get their credits back if they bounce.

Drawbacks: bounces on addresses marked verified are a common complaint, and Apollo’s own accuracy figures disagree: 91% in its knowledge base, 98% in its AI fact sheet. Seats are billed one by one, and fees are non-refundable.

Versus Similarweb: no traffic estimates, but Basic’s 2,500 monthly credits cost $49 against 1,000 data credits for $99 on Similarweb’s Sales Individual plan, both billed yearly (each vendor counts credits differently). See the Apollo profile, Apollo alternatives or Reachkit vs Apollo.

ZoomInfo sells a contact and company database with intent data and sales apps layered on top. It claims 500M+ contacts, 100M+ companies and 300+ human researchers. Its Professional plan covers mobile numbers, emails and a dialer; the Copilot Advanced tier adds buyer intent and website visitors.

Price (October 2026): quote-only and seat-based, with a minimum number of seats. Vendr’s February 2026 data shows a $33,500 yearly median from 1,577 purchases. A free Lite tier comes with 10 credits a month, and the GTM.AI API and MCP charge per data credit with no contract, from $0.45 each falling to $0.25 at volume.

Strengths:

• Depth: phone numbers, intent topics and website visitors in one contract.
• A data-quality clause in the license terms: when over 5% of contacts are at the wrong company, ZoomInfo gets 30 days to correct it, after which you may terminate with a prorated refund.

Drawbacks: paid plans are annual, can’t be cancelled mid-term, and renew automatically unless you opt out within your contract’s notice window (60 days, according to several sources). Outdated contacts come up in both Trustpilot’s summary and G2’s list of cons. Lite’s terms let ZoomInfo use contacts from the email account you connect.

Versus Similarweb: both sell company data to sales teams on quotes, but ZoomInfo is built around people and phone numbers, not site traffic. See the ZoomInfo profile, ZoomInfo alternatives or Apollo vs ZoomInfo.

This is our product. Reachkit is a cold email platform with a Lead Finder built in. Similarweb’s Sales Intelligence finds contacts and drafts outreach messages but doesn’t send them; Reachkit runs the campaign. It fits founders, agencies and small sales teams whose next step after picking accounts is an email.

If you shortlisted accounts in Similarweb, Lead Finder can search people at those specific companies by title and seniority. Or describe the campaign in one sentence: Reachkit drafts the sequence and sizes a matching audience from Lead Finder’s 500M+ people and 70M+ companies, which you can filter by technologies, size, industry or revenue.

Price (October 2026): the Growth plan is $39 a month for the whole workspace, or $29 a month paid yearly. It includes 1,000 lead credits, room for 5,000 stored contacts and 15,000 campaign emails a month. Scale starts at $99 and adds the CRM, API and integrations. The trial runs 30 days with no card.

Strengths:

• Searching is free and 1 credit buys 1 verified lead. Team members are unlimited, with no seat fees.
• Sending is included: connect your own Google, Microsoft or IMAP inboxes with no per-inbox fee, or have Reachkit register domains ($15 a year) and set up Google or Microsoft inboxes ($5 an inbox a month) with AI warmup.

Drawbacks: no traffic estimates, intent data, phone numbers or LinkedIn steps. Leads come from one database rather than a waterfall, and the help center says typically 70 to 95% of a well-targeted search verifies. Growth stores 5,000 contacts at once, and CRM sync needs Scale.

Versus Similarweb: it won’t tell you which sites are growing; it turns the accounts you chose into a sent campaign. See pricing.

Clay is a table where each row can run through a chain of data providers until one returns an answer, a pattern known as waterfall enrichment. Claygent, its AI agent, can browse the web for every row, and Clay’s own Sequencer, generally available since September 2026, can send the emails. It fits GTM engineers and agencies who want to define list logic themselves.

Price (October 2026): a free plan, then Launch at $185 a month ($167 yearly) with 15,000 actions. Its data-credit allowance appears twice on Clay’s pricing page with different numbers: 2,500 in the FAQ, 3,000 on the plan card. Growth is $495 ($446 yearly).

Strengths:

• No seat limits on any plan, and enrichments that return nothing aren’t charged.
• Clay’s pricing page counts 150+ providers, and Claygent can answer questions no database field covers, such as whether a company sells to enterprises.

Drawbacks: two meters, actions and data credits, make the bill hard to forecast, and G2’s summary notes a steep learning curve. CRM sync, the HTTP API and webhooks need Growth.

Versus Similarweb: instead of one vendor’s view of a company, you combine many sources and decide which signals matter. See the Clay profile, Reachkit vs Clay or Apollo vs Clay.

Explorium is a B2B data provider built to be called by software: an API and a hosted MCP server that AI agents use to find companies and people. A search returns businesses or prospects by filter at 1 credit a record, and you pay more only to enrich the ones worth keeping, with firmographic, technographic, funding, workforce or contact fields, plus business events and intent topics. It suits teams where software builds the list.

Price (October 2026): one-time credit packs, no subscription. A free trial gives 100 credits for 90 days, then Lite is $29.99 for 500 credits, Starter $149.99 for 5,000, Growth $749.99 for 30,000 and Scale $7,499.99 for 500,000. Finding one prospect and their work email takes 3 credits.

Strengths:

• Public packs, no seats and no sales call below Enterprise.
• Audience counts are free, and you pay per field: 2 credits for an email, 5 for a phone.

Drawbacks: credits expire after 12 months, packs are non-refundable, and when the balance hits zero the service stops until you buy more. Outside its Vibe Prospecting chat tool, you work through the API, MCP, n8n or Clay (company data only). It doesn’t send email.

Versus Similarweb: Similarweb’s API and MCP need an API-only, Business or Enterprise plan, all priced by quote. Explorium’s API is open from a $29.99 pack. See the Explorium profile.

Exa is a search engine that AI agents and apps query instead of people. It crawls the web into its own index (1.4 trillion URLs tracked by August 2026, per its FAQ) and offers dedicated people and company search. Exa Agent takes on longer jobs: assembling a list, testing each company against your criteria and adding contact details. It fits developers who build lists in code.

Price (October 2026): pay as you go. Each month starts with $10 in free credit, no card required. Instant search is $4 per 1,000 requests and Fast or Auto $7. In Agent runs, an email enrichment costs $0.02 and a phone $0.07, on top of compute.

Strengths:

• API rates are public, and there’s no plan to subscribe to or spend floor to meet.
• A hosted MCP server and an official n8n node. Agent runs can also pull Similarweb data through Exa Connect, at $0.30 per Similarweb credit on top of the run.

Drawbacks: many meters, and a metered Agent run’s compute can be capped but not priced in advance. One r/gtmengineering user called its structured company and people lists weak; that’s one voice, so test it on your own market.

Versus Similarweb: open-ended research by query instead of fixed traffic reports. See the Exa profile.

Start with what you did in Similarweb last month, not what the plan included.

• You ranked companies by traffic, then looked up people. Apollo if you want contacts and sequences cheaply, ZoomInfo for a large team that also calls, Reachkit if the next step is cold email.
• You treated traffic as a buying signal. Leadfeeder for companies visiting your own site, 6sense if there’s budget for intent across the web, Crunchbase if funding news predicts buying in your market.
• Your engineers called Similarweb’s API. Explorium for structured company data on prepaid packs, Exa for open-ended research, Clay to mix providers without code.
• You used it for SEO, ads or market sizing. Keep Similarweb or compare SEO suites; nothing above replaces that.

On a self-serve plan, Similarweb lets you cancel inside the app and keep access until the billing period ends. Business contracts set their own termination terms.

Similarweb is good at what it was built for: sizing up markets and competitors. If it pays off there, keep it. For prospecting, I treat traffic as a way to rank accounts, not a reason to email them, and its estimates are weakest on small sites.

If you mostly used Similarweb to pick companies and then hunt for people, a contact tool and a sender cover that job for less. That’s the case for Reachkit: choose the companies, add verified people, and send from warmed inboxes in one workspace. If you need phone numbers or intent data, ZoomInfo or 6sense fit better.

Related: ZoomInfo alternatives, Apollo alternatives and Reachkit vs Clay.