Company lists · Data refreshed September 2026

Top 16 Task outsourcing platforms based in San Francisco, United States

RevenueBase identified 53 task outsourcing platforms headquartered in San Francisco, United States as of September 2026 and tracks 128,687 professional contacts across them, including 589 with verified work emails. New York is the largest hub.

This list covers task outsourcing 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 6, 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 6, 2026 86% judged on-target in blind review
53Companies
128,687Contacts tracked
589Verified emails
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The 16 largest task outsourcing platforms based in San Francisco, United States

Ranked by team size
Top 16 of 53 task outsourcing platforms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to task outsourcing 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 evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026n/a127,560 contacts →

“Upwork is the world’s work marketplace that connects businesses with independent talent from across the globe.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026n/a220 contacts →

“informal matches world class freelancers with companies of all sizes.”

Source: company website · checked Sep 6, 2026
3Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026n/a51 contacts →

“Upload your resume once and get confirmed remote jobs ranked by skills, salary, seniority, timezone, and location eligibility.”

Source: company website · checked Sep 6, 2026
4Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026201-50038 contacts →

“We’re a platform that lets companies work efficiently and securely with top, thoroughly selected IT contractors.”

Source: company website · checked Sep 6, 2026
5Indirect evidenceSan Francisco, United StatesHQ checked Sep 6, 202611-5020 contacts →

“Build your tech team in Latin America with Teilur Talent's end-to-end solution.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202611-5018 contacts →

“Employers Are you struggling to find and hire the top-performing remote talent to drive and support growth for your company?”

Source: company website · checked Sep 6, 2026
7Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202611-5014 contacts →

“HireAthena is an on-demand labor marketplace focused on accounting, payroll and HR.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202611-5012 contacts →

“Freelancers are at the forefront of the future of work.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceSan Francisco, United StatesHQ checked Sep 6, 20261-108 contacts →

“Get world-class offshore talent, with an acceptance rate of less than 1%, for everyday help with design, data entry, ads testing, copywriting, project managing, and more.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202611-507 contacts →

“Achieve superior business outcomes by combining the best of skilled humans with cutting-edge AI agents.”

Source: company website · checked Sep 6, 2026
11Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 20261-105 contacts →

“Bench is a web-based mobile-enabled software platform, on which Independent Consultants and Client Organizations are matched to deliver project based work within IT departments.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceSan Francisco, United StatesHQ checked Sep 6, 202611-505 contacts →

“GrowTal is a remote talent marketplace revolutionizing the recruiting process for hiring companies everywhere.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceSan Francisco, United StatesHQ checked Sep 6, 202611-504 contacts →

“The best of today's gig workforce is at your disposal”

Source: company website · checked Sep 6, 2026
14Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 20261-101 contacts →

“SourceSeek helps business owners navigate the complex world of software outsourcing.”

Source: company website · checked Sep 6, 2026
15Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 20261-101 contacts →

“freelance 2.0 platform

Source: company website · checked Sep 6, 2026
16Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 20261-101 contacts →

“Sesh is a complete, on-demand solution for Finance, People, Talent, and Legal for early stage VC-backed startups.”

Source: company website · checked Sep 6, 2026

Showing 16 of 53 task outsourcing platforms based in San Francisco, United States

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Task outsourcing platforms based in San Francisco, United States at a glance

As of Sep 6, 2026
0.5%Verified-email coverage
2428.1Average contacts per company
1-10Median size (employees)
179.2%Largest-city concentration · New York
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
21
51-200
2
201-500
1
501-1,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 53 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 task outsourcing 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 “task outsourcing 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 task outsourcing 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 task outsourcing 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, 589 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 6, 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.

Task outsourcing 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 task outsourcing 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 task outsourcing platforms are there based in San Francisco, United States?

RevenueBase identified 53 task outsourcing 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?

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

Which city has the most task outsourcing platforms?

New York leads with 95 headquartered companies, followed by San Francisco (53) and Los Angeles (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 589 verified decision-maker contacts tracked across these 53 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 6, 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.