Comprehensive Sales Intelligence Platforms:

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ZoomInfo: One of the most widely used platforms, offering vast B2B contact and company data, including firmographics, technographics, and intent data.
Apollo.io: Popular for its extensive database, email finding, and sequencing capabilities, often used by sales and marketing teams for outreach.
Lusha: Known for its accurate contact data, particularly phone numbers and email addresses.
Seamless.AI: Focuses on real-time search for contacts and companies, claiming high accuracy.

Clearbit: Provides B2B armenia whatsapp number database data enrichment, allowing you to add firmographic and technographic data to existing leads or website visitors.
DiscoverOrg (now part of ZoomInfo): Another strong player known for human-verified data.
Prospecting Tools Integrated with LinkedIn:

LinkedIn Sales Navigator: While not a traditional database you can export en masse, it's an incredibly powerful tool for identifying, segmenting, and engaging with B2B prospects based on detailed professional criteria within the LinkedIn ecosystem. Many other tools integrate with or scrape data from LinkedIn (though scraping terms of service should be checked).
Intent Data Providers:

Bombora: A leading provider of B2B intent data, showing which companies are actively researching specific topics.
6sense: Offers a comprehensive ABM platform with strong intent data capabilities to identify in-market accounts.
CRM Systems with Advanced Features:

Salesforce Sales Cloud: While a CRM, its AppExchange offers numerous integrations with B2B data providers to enrich lead and account records.
HubSpot Sales Hub: Integrates with various B2B data tools and offers native prospecting features.
Data Enrichment Services:

Hunter.io: Primarily for finding email addresses associated with domains.
Skrapp.io: Another popular email finder tool.
BuiltWith: Provides technographic data, showing what technologies websites are built with.
Crowdsourced Data: