Company lists · Data refreshed September 2026

Top 16 Knowledge exchange platforms based in the United States

RevenueBase identified 50 knowledge exchange platforms headquartered in the United States as of September 2026 and tracks 1,487 professional contacts across them, including 302 with verified work emails and 267 with mobile numbers. San Francisco is the largest hub.

This list covers knowledge exchange platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
50Companies
1,487Contacts tracked
302Verified emails
267Mobile numbers
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The 16 largest knowledge exchange platforms based in the United States

Ranked by team size
Top 16 of 50 knowledge exchange platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to knowledge exchange platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMountain View, CA, United StatesHQ checked Sep 4, 2026201-5001,038 contacts →

Indirect evidence

“Quora’s mission is to grow the world’s collective intelligence.”

Source: RevenueBase Database · checked Sep 4, 2026
2Partial evidenceSilver Spring, MD, United StatesHQ checked Sep 4, 202611-50123 contacts →

Partial evidence

“Jobskillshare is the premier platform for skill sharing and professional development.”

Source: RevenueBase Database · checked Sep 4, 2026
3Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 4, 2026201-50072 contacts →

Indirect evidence

“BrightTALK brings professionals and businesses together to learn and grow.”

Source: RevenueBase Database · checked Sep 4, 2026
4Indirect evidenceMilwaukee, WI, United StatesHQ checked Sep 4, 202651-20066 contacts →

Indirect evidence

“Forj empowers the professionals who make our world better.”

Source: RevenueBase Database · checked Sep 4, 2026
5Partial evidenceSouthlake, TX, United StatesHQ checked Sep 4, 202611-5028 contacts →

Partial evidence

“Social Knowledge® was founded to foster online communities, sites where people with similar interests connect to harness the distributed expertise of the members.”

Source: RevenueBase Database · checked Sep 4, 2026
6Indirect evidenceCary, NC, United StatesHQ checked Sep 4, 202611-5013 contacts →

Indirect evidence

“Welcome to InsightLab, your go-to community for sparking conversations, sharing expertise, and staying on top of the latest industry insights-all while earning some exciting…”

Source: RevenueBase Database · checked Sep 4, 2026
7Indirect evidenceNY, United StatesHQ checked Sep 4, 20261-1010 contacts →

Indirect evidence

“Voray is the go-to place to join, build, or partner with a community.”

Source: RevenueBase Database · checked Sep 4, 2026
8Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 4, 20261-1010 contacts →

Strong evidence

“BraveNew powers online knowledge sharing and collaboration communities for the enterprise on its proprietary platform.”

Source: RevenueBase Database · checked Sep 4, 2026
9Strong evidenceRoseville, United StatesHQ checked Sep 4, 20261-106 contacts →

Strong evidence

“iOOi pronounced: I | You | We We are iOOi, a social knowledge-sharing platform.”

Source: RevenueBase Database · checked Sep 4, 2026
10Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 4, 202611-506 contacts →

Indirect evidence

“CommonGenius is an international expert community that helps professionals overcome complex challenges in and out of the office.”

Source: RevenueBase Database · checked Sep 4, 2026
11Indirect evidenceTempe, AZ, United StatesHQ checked Sep 4, 20261-103 contacts →

Indirect evidence

“Our vision is to revolutionize the way clients access expertise and be the go-to resource for clients seeking access to niche professionals.”

Source: RevenueBase Database · checked Sep 4, 2026
12Partial evidenceBellingham, WA, United StatesHQ checked Sep 4, 202611-502 contacts →

Partial evidence

“At Forumbee, we are on a mission to empower organizations through a comprehensive, modern cloud-based community platform.”

Source: RevenueBase Database · checked Sep 4, 2026
13Partial evidenceWashington, DC, United StatesHQ checked Sep 4, 202611-502 contacts →

Partial evidence

“BuildWise is a modern and interactive lessons-learned platform designed for construction projects.”

Source: RevenueBase Database · checked Sep 4, 2026
14Partial evidenceCedar Falls, IA, United StatesHQ checked Sep 4, 20261-102 contacts →

Partial evidence

“At HowFactory we believe that knowledge is more powerful when it's shared with the tribe.”

Source: RevenueBase Database · checked Sep 4, 2026
15Strong evidenceAmherst, NY, United StatesHQ checked Sep 4, 20261-102 contacts →

Strong evidence

“The Advisor Network is a platform designed to facilitate collaboration among individuals seeking to expand their knowledge and skills.”

Source: RevenueBase Database · checked Sep 4, 2026
16Partial evidenceTemecula, CA, United StatesHQ checked Sep 4, 20261-101 contacts →

Partial evidence

“Embrasure Space is an online platform aimed at building a network of value for general dentists, specialist, and other professionals whose goal is to support healthcare providers…”

Source: RevenueBase Database · checked Sep 4, 2026

Showing 16 of 50 knowledge exchange platforms based in the United States

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Knowledge exchange platforms based in the United States at a glance

As of Sep 4, 2026
20.3%Verified-email coverage
18.0%Mobile-number coverage
29.7Average contacts per company
1-10Median size (employees)
8.0%Largest-city concentration · San Francisco
Sep 4, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
9
51-200
1
201-500
4

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among knowledge exchange platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “knowledge exchange platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names knowledge exchange platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among knowledge exchange platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 302 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names knowledge exchange platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many knowledge exchange platforms are there based in the United States?

RevenueBase identified 50 knowledge exchange platforms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

QUORA, headquartered in Mountain View, tops this list with the largest team on record.

Which city has the most knowledge exchange platforms?

San Francisco leads with 4 headquartered companies, followed by Mountain View (3) and New York (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 302 verified decision-maker contacts tracked across these 50 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.