62 Data Sources for Better Outbound Lists
Underused and alternative data sources organized by category. Many accessible via Apify scrapers.
Review & Feedback Sites
| Source |
What You Get |
Sales Signal |
Why Underused |
| G2 |
Reviewer titles, companies, ratings, comparisons |
Tool dissatisfaction, switching intent |
Reviews reveal pain points and timing |
| Capterra |
Reviewer details, pros/cons, company size |
Mid-market software evaluators |
Lower profile than G2, equally valuable |
| Trustpilot |
Company ratings, sentiment, reviewer info |
CX quality, brand health |
B2C focus means B2B teams skip it |
| Gartner Peer Insights |
Enterprise reviewer titles, vendor comparisons |
Enterprise buying intent |
Perceived as "too enterprise" |
| Glassdoor |
Employee reviews, salary data, company ratings |
Culture, growth trajectory, hiring budget |
Used for recruiting, not sales |
| Yelp |
Business owner info, local data, reviews |
Local/SMB market intelligence |
Seen as "consumer" not B2B |
Startup & Founder Discovery
| Source |
What You Get |
Sales Signal |
Why Underused |
| Product Hunt |
Maker emails, launches, upvotes, categories |
Early-stage founders, PMF timing |
Most only use for competitive intel |
| Y Combinator Directory |
Profiles, founders, batch, funding, team size |
Venture-backed with budget |
Requires manual browsing without scraper |
| Wellfound (AngelList) |
Profiles, team, funding, job listings |
Funded startups actively hiring |
API limited; scraping unlocks more |
| BetaList |
New startups, maker profiles, descriptions |
Pre-launch and early-stage founders |
21K+ startups, barely touched |
| Crunchbase |
Funding, acquisitions, exec changes, tech stack |
Growth signals, leadership transitions |
API expensive; scrapers are cheap |
| Hacker News |
"Show HN" launches, job posts, discussions |
Developer/founder sentiment |
Real-time signals lost in noise |
Events & Communities
| Source |
What You Get |
Sales Signal |
Why Underused |
| Meetup |
Events, organizers, RSVPs, group members |
Self-identified interest in topics |
Event data rarely used for outbound |
| Eventbrite |
Events, organizer profiles, ticket pricing |
Professional event attendance intent |
B2B teams don't think "events" |
| Lu.ma |
Tech events, attendee counts, organizer info |
High-intent tech community |
Newer platform, undiscovered |
| LinkedIn Events |
Attendees, company affiliations |
Professional interest signals |
Hard to access without scraping |
| Reddit |
Discussions, complaints, tool mentions |
Unfiltered buyer frustrations |
Perceived as "consumer" only |
| Hacker News |
Tech discussions, job posts, launches |
Developer/founder sentiment |
Too noisy without filtering |
Job Boards & Hiring Signals
| Source |
What You Get |
Sales Signal |
Why Underused |
| Greenhouse |
Job posts, company info, tech in descriptions |
Hiring = budget = growth |
Requires scraping each ATS |
| Lever |
Job titles, requirements, company details |
Department-level expansion |
Fragmented across platforms |
| Workable |
Job listings, company profiles, salaries |
SMB/mid-market hiring |
Less known than big boards |
| Ashby |
Job posts, company info |
Modern startups using modern ATS |
Newer ATS, fewer scrapers |
| Indeed |
Job posts at scale, salary estimates |
Mass hiring signals |
High volume, needs filtering |
| Work at a Startup (YC) |
YC company jobs, team size, stage |
Venture-backed hiring intent |
YC-specific, highly targeted |
Tech Stack & Technographics
| Source |
What You Get |
Sales Signal |
Why Underused |
| BuiltWith |
Full tech stack, CMS, analytics, payments |
Technology adoption patterns |
Expensive API; scrapers bypass cost |
| Wappalyzer |
Frontend/backend frameworks, CDN, hosting |
Tool switching opportunities |
Requires bulk lookups |
| 6sense Tech Data |
Technology market insights, install base |
Competitive intelligence |
Enterprise-focused, overlooked |
| Stackshare |
Company tech stacks, comparisons |
Developer tooling decisions |
Niche, highly specific |
| DNS/WHOIS Data |
Domain age, registrar, mail provider |
Legitimacy, tech maturity |
Technical, underutilized |
Marketplaces & E-Commerce
| Source |
What You Get |
Sales Signal |
Why Underused |
| Shopify Stores |
Products, pricing, store metadata |
E-commerce brand intelligence |
Most focus on Amazon only |
| Amazon |
Products, reviews, seller info, pricing |
Market validation, competitor analysis |
Heavily used, specific cases missed |
| Etsy |
Seller profiles, product data, reviews |
Creative/SMB market |
B2B teams ignore handmade market |
| AppSumo |
SaaS launches, pricing, founder info |
Early-stage SaaS buyers/builders |
Niche lifetime deal market |
Freelancer & Services Platforms
| Source |
What You Get |
Sales Signal |
Why Underused |
| Fiverr |
Gigs, seller profiles, pricing, reviews |
Freelancer market trends |
Seen as "gig economy" not B2B |
| Upwork |
Job posts, client budgets, freelancer profiles |
Project-based demand signals |
Underused for B2B lead gen |
| Clutch.co |
Agency profiles, client lists, portfolios |
Agency ecosystem, client discovery |
Gold mine for partnerships |
| Freelancer.com |
Job listings, project budgets, client info |
Outsourcing demand |
Less polished, still valuable |
| PeoplePerHour |
Project listings, client profiles |
UK/EU freelance market |
Regional but rich data |
Content & Creator Platforms
| Source |
What You Get |
Sales Signal |
Why Underused |
| YouTube Channels |
Creator emails, subscriber counts, video stats |
Influencer/creator partnerships |
Business emails often in "About" |
| Substack |
Newsletter creators, subscriber counts, themes |
Creator economy leads |
Market booming, data untapped |
| Apple Podcasts |
Podcast hosts, episode data, genres |
Guest/sponsor opportunities |
Scraping unlocks discovery at scale |
| Spotify Podcasts |
Podcast metadata, creator info |
Audio content creators |
Similar to Apple, different catalog |
| Medium |
Publication authors, engagement metrics |
Thought leadership identification |
Easy to get, rarely used for outbound |
Developer & Open Source
| Source |
What You Get |
Sales Signal |
Why Underused |
| GitHub Stargazers |
User profiles, company, email, social links |
Technical evaluators, OSS enthusiasts |
Developers influence buying decisions |
| GitHub Repo Data |
Stars, forks, contributors, issues |
Tool adoption, community health |
Competitive intel for dev tools |
| Stack Overflow |
Question authors, tags, company mentions |
Technical pain points |
Problem-focused, not used for outreach |
| Dev.to |
Developer authors, article engagement |
Developer community trends |
Growing platform, underutilized |
Business Directories & Lists
| Source |
What You Get |
Sales Signal |
Why Underused |
| Google Maps |
Business listings, reviews, contact info |
Local business intelligence |
Massive scale, often too broad |
| Yelp Business |
SMB profiles, owner info, reviews |
Local/SMB market |
Consumer-perceived, B2B uses exist |
| Yellow Pages / Local Directories |
Business categories, contact info |
Traditional businesses |
"Old school" but data-rich |
| Industry Association Directories |
Member companies, leadership |
Vertical-specific targeting |
Scattered, requires manual ID |
Funding & Investment
| Source |
What You Get |
Sales Signal |
Why Underused |
| Crunchbase Funding |
Rounds, investors, amounts, dates |
Budget availability, growth stage |
API costs limit access |
| AngelList/Wellfound |
Valuations, investor connections |
Investment ecosystem |
Fragmented with job data |
| SEC Filings |
Public company financials, acquisitions |
Enterprise intelligence |
Technical to parse |
| PitchBook (indirect) |
Funding via news/press releases |
PE/VC activity |
Requires creative sourcing |
News & Press
| Source |
What You Get |
Sales Signal |
Why Underused |
| TechCrunch |
Company mentions, funding news, launches |
Tech industry timing |
News = trigger events |
| PR Newswire / Business Wire |
Press releases, exec quotes |
Corporate announcements |
Real-time triggers overlooked |
| Industry Blogs |
Company mentions, thought leadership |
Competitive intelligence |
Requires domain-specific targeting |
| Company Newsrooms |
Direct PR, executive announcements |
First-party company signals |
Scattered across websites |
Location & Real Estate
| Source |
What You Get |
Sales Signal |
Why Underused |
| Google Maps |
Office locations, reviews, popular times |
Physical presence, expansion |
Underutilized for B2B |
| Commercial Real Estate Listings |
Office expansions, relocations |
Growth/contraction signals |
Niche but powerful |
| Coworking Space Directories |
Startup locations, company profiles |
Early-stage discovery |
Startups cluster in specific spaces |
Built by Frontal & Ivan Falco. For questions on implementation or anything not covered here, reach out to Ivan directly on LinkedIn.