--- title: "Explorium alternatives (2026), sorted by the job you need done" description: "Why teams look beyond Explorium, the tools worth considering for the same job, and when WhoLayer is and isn't a fit. Sourced and dated." url: https://wholayer.com/alternatives/explorium --- Alternatives · Contact data, enrichment, and MCP # Explorium alternatives Sorted by the job you hired Explorium for. WhoLayer is one option; it isn't the right one for everyone, and we say when. Checked November 4, 2026. Every competitor figure links to its source. Winding down Explorium announced on November 3, 2026 that it is shutting down operations. Its AgentSource platform remains available until December 2, 2026, when data exports also end; account data is deleted by December 31, 2026, and unused credits are refunded. [\[4\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-4) [Moving off Explorium? Read the switch guide](https://wholayer.com/switch/explorium) ## Why people look beyond Explorium Themes from public reviews and the vendor's own pages, attributed to where they were reported. - AgentSource and Vibe Prospecting are being discontinued on December 2, 2026 [\[4\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-4) ## Options worth a look WhoLayer Website visitor identification (person-level for US traffic, company-level free), Shopper ID for Klaviyo, and contact data through a REST API and MCP server, from one credit wallet. Free plan with 100 credits a month; paid plans from $49 a month. Good fit if you want - Built for agents - Contact data with checks - Company-level ID is free [WhoLayer vs Explorium](https://wholayer.com/compare/explorium) Apollo All-in-one prospecting: contact database, sequences, dialer, website visitors, AI assistant, and MCP. [\[6\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-6) Free; Basic about $49 per seat a month billed annually (third-party figure) [\[7\] third-party, November 4, 2026](https://wholayer.com/alternatives/explorium#source-7) Good fit if you want - A large contact database with sequences and a dialer in one tool - An MCP server that can write (for example, create contacts and sequences) - AI assistant workflows across prospecting and outreach [WhoLayer vs Apollo](https://wholayer.com/compare/apollo) ZoomInfo Large B2B data platform for sales and marketing, now also selling a self-serve, agent-first data product (GTM.AI). [\[13\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-13) GTM.AI: 1,000 free data credits, then pay as you go from $20 top-ups; annual contracts are not priced publicly [\[14\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-14) Good fit if you want - Depth of enterprise company and contact data - Intent topics, ABM display, and retargeting - Free search and lookup in GTM.AI, plus an open-source CLI [WhoLayer vs ZoomInfo](https://wholayer.com/compare/zoominfo) Clay GTM engineering workspace: tables, waterfall enrichment across 150+ data providers, AI research agents, signals, and MCP. [\[17\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-17) Free; Launch from $185 a month ($167 a month billed annually) [\[17\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-17) Good fit if you want - 150+ data providers with waterfalls that stop at the first validated result - AI web research (Claygent) and a natural-language table builder - Flexible, programmable workflows and ad audience pushes [WhoLayer vs Clay](https://wholayer.com/compare/clay) Hunter Self-serve email finder and verifier, now an outreach platform with an MCP server. [\[20\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-20) Free (50 credits a month); Starter $49 a month ($34 a month billed annually) [\[21\], November 4, 2026](https://wholayer.com/alternatives/explorium#source-21) Good fit if you want - Email finding from public web sources, with the origin of each email - Low-cost bulk email verification - Built-in sequences, sending accounts, and inbox warm-up [WhoLayer vs Hunter](https://wholayer.com/compare/hunter) ## When WhoLayer is not a fit - You need a large global contact database for prospecting by country. WhoLayer's person-level data is US-only. - You need person-level identification of visitors outside the US. WhoLayer identifies people for US traffic only; elsewhere it's company-level, after consent. - You want a full ABM advertising suite, an on-site AI chat agent, or a built-in sequencer and dialer. WhoLayer identifies and enriches; it doesn't run ads, chat, or send email for you. The quickest way to know is to try it on your own traffic. The Free plan includes company-level identification and monthly credits, no card needed. ## Sources - \[1\] [Explorium developer docs](https://developers.explorium.ai/) (vendor's own page, checked November 4, 2026) - \[2\] [PricingSaaS: Explorium pricing](https://pricingsaas.com/companies/explorium/diffs/2026W37) (third-party source, checked November 4, 2026) - \[3\] [Explorium docs: contact information enrichment](https://developers.explorium.ai/v2/prospects/enrichments/contact_information_job) (vendor's own page, checked November 4, 2026) - \[4\] [Explorium: AgentSource will be discontinued on December 2, 2026](https://www.explorium.ai/blog/news-and-updates/important-notice-agentsource-will-be-discontinued-on-december-2-2026/) (vendor's own page, checked November 4, 2026) - \[5\] [explorium.ai](https://www.explorium.ai/) (vendor's own page, checked November 4, 2026) - \[6\] [apollo.io](https://www.apollo.io/) (vendor's own page, checked November 4, 2026) - \[7\] [Costbench: Apollo.io pricing](https://costbench.com/software/sales-intelligence/apollo-io) (third-party source, checked November 4, 2026) - \[8\] [Apollo pricing](https://www.apollo.io/pricing) (vendor's own page, checked November 4, 2026) - \[9\] [Releasebot: Apollo updates](https://releasebot.io/updates/apollo/apollo) (third-party source, checked November 4, 2026) - \[10\] [Apollo API pricing docs](https://docs.apollo.io/docs/api-pricing) (vendor's own page, checked November 4, 2026) - \[11\] [Trustpilot reviews of Apollo](https://www.trustpilot.com/review/apollo.io) (third-party source, checked November 4, 2026) - \[12\] [Costbench: Apollo price changes (2026)](https://costbench.com/changelog/apollo-price-decrease-2026-08/) (third-party source, checked November 4, 2026) - \[13\] [ZoomInfo pricing](https://www.zoominfo.com/pricing) (vendor's own page, checked November 4, 2026) - \[14\] [GTM.AI pricing](https://gtm.ai/pricing) (vendor's own page, checked November 4, 2026) - \[15\] [Emelia: ZoomInfo pricing](https://emelia.io/software/zoominfo/pricing) (third-party source, checked November 4, 2026) - \[16\] [Cleanlist: ZoomInfo GTM.AI explained](https://www.cleanlist.ai/blog/2026-07-23-zoominfo-gtm-ai-gtm-bench-explained) (third-party source, checked November 4, 2026) - \[17\] [Clay pricing](https://www.clay.com/pricing) (vendor's own page, checked November 4, 2026) - \[18\] [Clay: new pricing (Mar 2026)](https://www.clay.com/blog/introducing-clays-new-pricing) (vendor's own page, checked November 4, 2026) - \[19\] [Cleanlist: Clay MCP server review](https://www.cleanlist.ai/blog/2026-10-01-clay-mcp-server-review) (third-party source, checked November 4, 2026) - \[20\] [hunter.io](https://hunter.io/) (vendor's own page, checked November 4, 2026) - \[21\] [Hunter pricing](https://hunter.io/pricing) (vendor's own page, checked November 4, 2026) - \[22\] [Hunter API docs](https://hunter.io/api-documentation/v2) (vendor's own page, checked November 4, 2026) - \[23\] [Hunter: MCP server](https://hunter.io/blog/hunter-mcp-server-bringing-ai-and-b2b-data-together) (vendor's own page, checked November 4, 2026) Competitor information is from public sources as of November 4, 2026 and may have changed. Trademarks belong to their owners. WhoLayer wrote this page; if something here is wrong, [tell us](https://wholayer.com/contact?topic=sales) and we'll fix it. [All alternatives guides](https://wholayer.com/alternatives) · [All comparisons](https://wholayer.com/compare) Ready when you are ## See who's on your site this week Install one tag. Your first 100 identified people are free, no card needed. [Start free](https://wholayer.com/signup) [Talk to sales](https://wholayer.com/contact?topic=sales)