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MainStreet

mainstreet.com · Bookkeeping & tax · Finance

Mainstreet is a software development company based in San Francisco, employing between 51 and 200 people. The company specializes in providing an integrated back-office operating system designed for small businesses and entrepreneurs. Its platform streamlines essential operations, allowing business owners to concentrate on growth rather than administrative tasks.

Company facts

Founded2019 (7 years)
Latest fundingMerger / Acquisition
Employees67
HeadquartersSan Francisco, United States
Trusted networks on Proven3 investor, bank and government networks offer MainStreet to their members
Member offers on Proven1
Member redemption clicks7

Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.

Discounts for Proven network members

Receive a one-time $1,000 credit

Members redeem through their investor or bank's Proven marketplace. Terms vary by network.

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Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.