Allows merchants to accept online and mobile payments

2. SoFi

Value: $4.3 billion

Founded: 2011

Founders: Mike Cagney, Dan Macklin, James Finnigan,

Ian Brady, Andy Carra

CEO: Mike Cagney

Offers student loan refinancing and other services to Millennials

3. GreenSky

Value: $3.6 billion

Founded: 2006

Founders: David Zalik, Larry Smith

CEO: David Zalik

Provides on-the-spot financing for home-improvement projects via its network of contractors. (For more, check out Forbes’ cover story on GreenSky.)

4. Credit Karma

Value: $3.5 billion

Founded: 2007

Founders: Kenneth Lin, Nichole Mustard, Ryan Graciano

CEO: Kenneth Lin

Offers free credit scores and recommendations for credit cards and loans

5. Oscar

Value: $2.7 billion

Founded: 2013

Founders: Josh Kushner, Mario Schlosser, Kevin Nazemi

CEO: Mario Schlosser

Makes it simpler to buy and use health insurance under Obamacare

6. Avant

Value: $2 billion

Founded: 2012

Founders: Al Goldstein, John Sun, Paul Zhang

CEO: Al Goldstein

Makes quick online loans to consumers with lower credit scores

7. Zenefits

Value: $2 billion

Founded: 2013

Founders: Parker Conrad, Laks Srini

CEO: Jay Fulcher

Sells a cloud-based human resources platform for businesses

8. Prosper

Value: $1.9 billion

Founded: 2005

Founders: Chris Larsen, John Witchel

CEO: David Kimball

Connects borrowers and investors for unsecured personal loans

9. AvidXchange

Value: $1.4 billion

Founded: 2000

Founders: Michael Praeger, David Miller

CEO: Michael Praeger

Automates invoicing and bill payments for businesses

10. Robinhood

Value: $1.3 billion

Founded: 2013

Founders: Baiju Bhatt, Vladimir Tenev

Co-CEOs: Baiju Bhatt, Vladimir Tenev

Offers free trades of stocks and ETFs via mobile app

*Valuations are from PitchBook and CB Insights.