DIRECTORY · CATEGORY
Backlink & Link-Building Tools
Tools for tracking backlinks, finding contacts, and running outreach campaigns to earn links. 15 tools, sorted by what's actually running underneath — full tier criteria →
01Apollo.ioDATA MOATOwn crawler plus a crowdsourced contributor network and licensed third-party data feed a database refreshed on 150M+ contacts a month — real infrastructure behind the outreach tool.CONF HIGH$49+/MO02BuzzStreamAPI STITCHOutreach CRM whose contact discovery is on-demand AI web research, not a pre-built index — Ahrefs supplies the SEO metrics.CONF HIGH$49+/MO03ConnectivelyAPI STITCHA two-sided marketplace, not a data or API product — Connectively (formerly HARO) sells access to a live network of publishers and experts a script can't conjure, even though the matching mechanism itself is simple.CONF MEDIUM$0+/MO04Hunter.ioDATA MOATOwn crawler indexing 150M+ emails from the public web — a real data moat behind what looks like a simple email-finder wrapper.CONF MEDIUM£28+/MO (GBP)05LinkodyAPI STITCHBacklink tracker with its own monitoring/discovery crawler for tracked and competitor domains; Domain Rating, Domain Authority, and Trust Flow/Citation Flow scores are licensed from Ahrefs, Moz, and Majestic, not built in-house.CONF MEDIUM€13.90+/MO06LinkResearchToolsAPI STITCHAggregates 25+ third-party link-data sources plus its own crawlers; no single proprietary web-scale index of its ownCONF MEDIUM$599+/MO07MajesticDATA MOATOwn crawler since 2004, Fresh + Historic link indexes, proprietary Trust Flow/Citation FlowCONF MEDIUM$49.99+/MO08Monitor BacklinksAPI STITCHBacklink tracker and disavow tool, founded 2012, acquired by SEOptimer in 2023; licenses Majestic and Moz data rather than running its own crawl, now sold as a feature inside SEOptimer's White Label plans rather than a standalone product.CONF HIGH$39+/MO09NinjaOutreachDATA MOATA 130M+ profile influencer/blogger database built and maintained since 2014 — not on-demand search or a rented third-party feed.CONF MEDIUM$49+/MO10PitchboxAPI STITCHLink-building CRM that rents its metrics from Ahrefs, Moz, Semrush, and Majestic instead of running its own crawler — the real build is the prospecting-and-sequencing pipeline.CONF HIGH$210+/MO11ProwlyAPI STITCHProwly no longer exists as a standalone product — it's now sold only as Semrush's AI PR Toolkit, riding Semrush's own traffic data with an undisclosed journalist-database source.CONF MEDIUM$149+/MO12ResponaAPI STITCHNow a pay-per-placement done-for-you link-building/digital PR service, not self-serve outreach software; no proprietary data moat disclosedCONF MEDIUM$100+/PLACEMENT13RocketReachDATA MOATRuns its own web-scanning search technology across a claimed 700M+ profiles and 60M+ companies — a real data moat, not a lookup you can fake with one API call.CONF MEDIUM£20+/MO (GBP)14Snov.ioAPI STITCHReal email-finder-plus-outreach engineering — the lookup itself is pattern-guessing and live verification you could rebuild yourself, layered under a CRM, warm-up network, and sequencing you probably wouldn't.CONF MEDIUM$29.25+/MO15Voila NorbertAPI STITCHPattern-guessing plus live verification you could rebuild yourself, layered under bulk workers, API access, and email-sequencing infrastructure you probably wouldn'tCONF MEDIUM$49+/MO