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Venture capital firm

Mainsail Partners

Growth equity firm investing in bootstrapped B2B software and AI-enabled companies and helping them scale

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About Mainsail Partners

Mainsail Partners is a growth equity firm that invests in business software companies, including those using AI. It focuses on founder-led firms that have grown without outside money and want help scaling.

Products and services

  • Growth equity: takes a stake in software firms whose growth has caught up with their cash flow.
  • Operations team: a dedicated group helps build the team and infrastructure.
  • Talent recruiting: helps portfolio companies hire senior people.
  • Sales and marketing planning: shares practices and resources for software businesses.
  • Network access: uses its contacts to speed up key projects and cut risk.

Who it works with

The firm works with bootstrapped software founders. Portfolio examples include software for machine shops, fire inspection companies and veterinary practices, and companies such as ResMan, Aspire and Ncontracts have spoken about it.

Key facts

  • Focus: B2B software and AI-enabled companies
  • Investor type: growth equity
  • Podcast: Mainsail AI Labs

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

As of 2026-10-08. Organic ranks only; sponsored placements are never ranks.

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