Industrial sourcing portals in the US
Industrial supplier and part sourcing. The oldest B2B directory market in the US, still measured in real volume.
Which b2b sourcing portals get the most traffic?
By traffic, the largest b2b sourcing portals are Yellow Pages (42.77M monthly visits), Better Business Bureau (26.68M monthly visits) and Crunchbase (4.95M monthly visits). Worldwide figures for 2026-09, third-party estimates from docs.dataforseo.com. Where available, each row below lists the portal's monthly visits next to its operator.
Who buys in US b2b sourcing, and is there a single national database?
- Who pays for attention here
- Industrial suppliers and distributors pay subscription listings and RFQ lead fees to ThomasNet and Alibaba membership tiers, plus Dun & Bradstreet for credit and marketing data (head term "industrial suppliers" $7.64 CPC, 74000 monthly searches, measured 2026-09-01).
- What a cross-state index adds
- ThomasNet and Alibaba already aggregate supplier catalogs, capabilities and RFQ routing; the uncovered side is a national join of verified certifications (ISO/AS9100/ITAR), facility and plant-size data, ownership and financial health with quality or complaint history.
- Single national database?
- No. No official US supplier registry exists; coverage is commercial — ThomasNet returns 403 (bot shielding) while commercial registry dnb.com verified 200 after redirect, and neither publishes license, certification or quality history as a public DB.
Source: www.thomasnet.com · Last reviewed 2026-09-17
How big is the demand for US b2b sourcing?
Google Ads, United States, 2026-09-01- Head keyword
- industrial suppliers
- Searches / month
- 74,000
- Cost per click
- $7.64
- Advertiser competition
- 58/100
Opening score 51/100 — high click value against thin advertiser competition.
What are the main b2b sourcing portals in the US?
The original US local business directory — search by trade and city across millions of listings.
Accreditation profiles with ratings, complaint histories and scam reports for businesses across the US and Canada.
The reference directory of private companies — funding, leadership and acquisitions used for deal and vendor research.
Industrial MRO distribution whose catalogue functions as a de facto parts reference.
The reference catalogue for mechanical components; engineers search it instead of Google.
Software reviews and category grids that buyers use to shortlist business tools before a purchase.
Small-business directory and profile host that has been compiling company listings for over two decades.
On-demand manufacturing marketplace that quotes CNC, sheet metal and injection moulding from uploaded CAD.
The century-old US industrial supplier directory, now the sourcing front end for Xometry.
Daily curation of new products where makers launch and buyers browse by category.
B2B research and ratings platform listing 32,000+ software products and IT companies by service and city.
Electronic component search across distributor stock and pricing in real time — searching electronic component invent...
Neutral purchasing portal for the aviation industry connecting buyers of aviation parts with suppliers.
Vertical search website helping readers find and buy new, used, rare, out-of-print books and textbooks online.
Cloud-based R&D marketplace connecting researchers with scientific service providers for experiments and lab services.
Software review and discovery marketplace where buyers research and compare business software vendors.
Open-source software directory and community platform indexing projects, contributors, and code repositories.
Network of public research organizations and scientists for outsourced research services.
Global B2B sourcing platform linking buyers with vetted suppliers.
Online lab management and scientific research supply ordering platform.
Global B2B wholesale marketplace connecting US buyers with verified suppliers across thousands of product categories.
Global B2B marketplace for wholesale trade connecting US businesses with manufacturers and suppliers worldwide.
B2B wholesale trade marketplace offering global product sourcing listings to US buyers.
Free wholesale directory listing US suppliers, dropshippers and manufacturers by product category.
Membership-based wholesale directory of vetted suppliers and dropshippers serving US retailers and ecommerce sellers.
Business-to-business company directory with US supplier data, catalogs and procurement leads.
Amazon's B2B marketplace for US businesses to buy wholesale supplies, bulk quantities and business-only pricing.
B2B sourcing marketplace connecting US buyers with suppliers and manufacturers across Asia and worldwide.
Wholesale directory and review site listing US suppliers, dropshippers and wholesale product suppliers by category.