This is a curated list from testing tools over the years and talking to hundreds of B2B marketers, SDRs, and go-to-market pros. Whether you're building your first outbound motion or optimizing a mature engine, this reference will help you find the right tool for the job.
Best All-in-One Platforms for B2B Lead Generation and Outreach
Contact and Email Enrichment Tools for Outbound Campaigns
- Apollo.io
Verified emails, enrichment, direct dials - Cognism
GDPR-compliant EU data, strong contact quality - Clearbit
Real-time firmographic + contact APIs - PeopleDataLabs
Deep identity graph, API-based - Dropcontact
Privacy-compliant email enrichment - FullEnrich
Aggregates 15+ data sources - LeadGenius
Curated lists and research for MM/Enterprise - Snov.io
Email finder, verifier, and drip tools - Tomba
$39/mo for 100 verified contacts - Findymail
Extract emails from LinkedIn searches - RocketReach
Emails + phone; expensive but reliable - Wiza
Email + phone, credit-based model - Kaspr
Direct dials at low cost - ExactBuyer
Intuitive UI for filtered prospect lists - Leadrocks
Affordable enrichment tool - BookYourData
CSV-based B2B data purchases
Tools to Find Direct Dials and Mobile Numbers
- Lusha
Known for accurate direct dials - ZoomInfo
Best-in-class for phone validation - Cognism
Especially strong in EU markets - FullEnrich
$0.125/number via Freckle - Datagma
Smaller volume, strong niche focus - Freckle
UI over FullEnrich API; flexible filtering
ICP & Lookalike Audience Building Tools
- TryTelescope.ai
Automatically model ICP from closed-won deals - Ocean.io
Find lookalike accounts based on top customers - LeadGraph
Advanced filters; demo required - Clay
Complex and pricey; requires certification and training - DiscoLike
Define Your ICP as an Account List Purpose-built LLMs & precision company data for TAM Discovery and ICP Matching
Prospecting Tools for SaaS, Startups, and PLG Companies
- ProductHunt (autoprospect.io)
Daily startup scrape w/ contact info - Crunchbase
Startup funding + exec data - Golden.com
Deep company profiles with granular filters for industry, business model, and geography — great for building curated lists in SaaS, biotech, fintech, and other emerging sectors - SaaS Browser
Curated SaaS discovery database - Storeleads
Shopify + eCommerce platform data - Stackshare
Discover company tech stacks - Keyplay / PeerSignal
PLG startup discovery list - Beauhurst
UK/Germany private company intelligence - AngelList / Wellfound
Team + hiring data for startups - Coldytics
Great for hard-to-find ICPs and manually validated niche lead data — on the pricier side - HG Insights
Technographic firmographic data + buyer scoring — powerful but expensive, best for larger teams or ABM efforts
Local Business Data & Franchise List Providers
- Clay + Maps/Yelp
Hyper-local targeting using business directories - ScrapeHero
Chain/franchise locations and counts - FranchiseGator
Broad franchise listings - FranchiseOpportunities
Broad franchise listings - Data Axle
Authoritative U.S. SMB dataset - Statista
Industry-wide sizing and benchmarks - IBISWorld
Industry-wide sizing and benchmarks
Best Scraping Tools for B2B Prospecting
- Clay
Steep learning curve; not ideal for beginners - PhantomBuster
LinkedIn, Maps, and social scraping flows - TexAu
Chrome-based scraper; affordable and flexible - Kadoa
Great for structured data scraping, no-code - Browse.ai
Visual tool for scraping tables and search results - Listly
Easy data table extraction from websites - Outscraper
Ideal for Google Maps bulk scraping - Hexomatic
Lightweight AI + scraper combo - IGLeads.io
Instagram lead extraction for eCom/local/service brands - Tweetscraper
Scrapes Twitter to identify creators, influencers, and niche social accounts — useful for PLG and eCom influencer targeting
Location-Based & Regional Segmentation Tools
- FlexIndex
See if a company is remote, hybrid, or in-office - SimilarWeb
Website traffic by country, industry - Apollo
HQ location + hiring intent filters - ZoomInfo
HQ location + hiring intent filters - Clay + Maps
ZIP code and regional targeting via search operators
Intent Data, Buyer Signals & Account Scoring Tools
- Bombora
Topic-based 3rd-party intent data - LeadSift
Lightweight intent alternative to Bombora - G2
2nd-party: buyer signals based on profile and page views - Leadfeeder
De-anonymizes site traffic for B2B intent - Albacross
EU-focused visitor intent platform - Rb2b
1st-party signal platform for email + site behavior - Warmly
Real-time visitor intent signals from your site
Recommended GTM Data Stack for Startups & SMBs
Apollo.io
Category: All-in-one data, outreach & CRM
When to Add: Day 1
Why We Recommend It: Best all-in-one starting point — verified emails, sequences, basic CRM
Rb2b
Category: First-party intent (website engagement)
When to Add: Once you're getting traffic
Why We Recommend It: See who’s engaging with your brand and prioritize follow-up accordingly
Warmly
Category: First-party intent (website engagement)
When to Add: Once you're getting traffic
Why We Recommend It: See who’s engaging with your brand and prioritize follow-up accordingly
Smartlead.ai
Category: Dedicated email deliverability & scale
When to Add: When scaling sending
Why We Recommend It: Better inboxing, deliverability controls, and campaign separation from Apollo
Cognism
Category: Phone enrichment & compliance
When to Add: When adding cold calling
Why We Recommend It: Stronger phone match rates, compliance tools for Europe/EMEA
Kaspr
Category: Phone enrichment & compliance
When to Add: When adding cold calling
Why We Recommend It: Stronger phone match rates, compliance tools for Europe/EMEA
Storeleads
Category: Vertical-specific data
When to Add: When refining ICP
Why We Recommend It: eCom targeting, Shopify-focused
IGLeads.io
Category: Vertical-specific data
When to Add: When refining ICP
Why We Recommend It: Lead data from Instagram, great for local/service/creator
Crunchbase
Category: Vertical-specific data
When to Add: When refining ICP
Why We Recommend It: Funded startup and investor data
Stackshare
Category: Vertical-specific data
When to Add: When refining ICP
Why We Recommend It: Tech stack discovery
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