Company lists · Data refreshed September 2026

Top 13 Online tutoring platforms based in San Francisco, United States

RevenueBase identified 28 online tutoring platforms headquartered in San Francisco, United States as of September 2026 and tracks 2,637 professional contacts across them, including 183 with verified work emails. Across the United States, New York is the largest hub for this category (62 companies); San Francisco has 28.

This list covers online tutoring platforms headquartered in San Francisco, 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 14, 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 14, 2026 86% judged on-target in blind review
28Companies
2,637Contacts tracked
183Verified emails
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The 13 largest online tutoring platforms based in San Francisco, United States

Ranked by team size
Top 13 of 28 online tutoring platforms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to online tutoring 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
1Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 2026n/a1,426 contacts →

Partial evidence

“Outschool is an online learning marketplace built around kids' actual interests, not a standardized curriculum or a system that decides what they should learn when.”

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202651-200416 contacts →

Partial evidence

“BookNook is a research-based tutoring solution delivering high-impact reading and math intervention for K–8 students.”

Source: RevenueBase Database · checked Sep 14, 2026
3Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202651-200348 contacts →

Strong evidence

“Mentor Match is a personalized 1-on-1 online tutoring platform helping students excel in global curricula such as IB, British, and American.”

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202611-50106 contacts →

Indirect evidence

“Pencil Spaces consolidates a complete virtual classroom into one browser tab, providing video calls, unlimited whiteboards, chats, file sharing, and more.”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202651-20059 contacts →

Indirect evidence

“Tutor Corps has been in the education business since 2002, providing individualized support to students in grades K-12 for subjects ranging from English, math, social studies, and…”

Source: RevenueBase Database · checked Sep 14, 2026
6Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202611-5034 contacts →

Strong evidence

“XReadyLab – AI STEM Tutor & the World’s Largest Web/VR STEM Simulation Library XReadyLab is a leading EdTech platform delivering AI-powered STEM tutoring and the largest library…”

Source: RevenueBase Database · checked Sep 14, 2026
7Strong evidenceSan Francisco, United StatesHQ checked Sep 14, 202611-5026 contacts →

Strong evidence

“English Ninjas is an online platform that connects people with native English speaking tutors to improve their English with live video or audio chat sessions.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 20261-1015 contacts →

Partial evidence

“AnswersAi is an AI-powered solution to help students get instant homework help via our mobile or desktop platform.”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202611-5011 contacts →

Indirect evidence

“Our mission is to make education accessible to all by creating the world's #1 tutor-student marketplace - starting with Chinese Mandarin.”

Source: RevenueBase Database · checked Sep 14, 2026
10Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 20261-109 contacts →

Strong evidence

“Koala Go is a virtual classroom built from the ground up for online tutoring with kids, the use case Zoom and Google Meet weren't designed for.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

“Prepaze has the finest experts in every subject and also a diverse pool of teachers who can ensure that you receive knowledge in a friendly, comfortable and easy manner.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 20261-107 contacts →

Partial evidence

“The Schoolbird app is a mobile educational platform designed for academic and casual learners worldwide.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Enliven Learning Partners (ELP), an entrepreneurial 501(c)(3), develops and supports 1:1 learning programs.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 13 of 28 online tutoring platforms based in San Francisco, United States

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Online tutoring platforms based in San Francisco, United States at a glance

As of Sep 14, 2026
6.9%Verified-email coverage
94.2Average contacts per company
11-50Median size (employees)
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
11
51-200
4
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 28 companies.

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 online tutoring 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 San Francisco, United States whose own description of what they do matches “online tutoring 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 online tutoring 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 online tutoring platforms, and records with no verified work email. Companies headquartered outside San Francisco 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, 183 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 14, 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.

Online tutoring platforms by metro in the United States

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 online tutoring 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 online tutoring platforms are there based in San Francisco, United States?

RevenueBase identified 28 online tutoring platforms headquartered in San Francisco, 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?

Outschool, headquartered in San Francisco, tops this list with the largest team on record.

Which city in the United States has the most online tutoring platforms?

New York leads the United States with 62 headquartered companies, followed by Los Angeles (35) and Atlanta (29). San Francisco has 28.

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 183 verified decision-maker contacts tracked across these 28 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 14, 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.