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Marketplace 100


A ranking of the largest and fastest-growing marketplace startups.
This ranking is based on the The a16z Marketplace 100 index^
that is using Second Measure^ as a data source.


  1. 20

    Course Hero

    Access 30 million course-specific study materials

    Education Online Education Studying

    Headquarters: Redwood City, CA
    Released: 01 Oct 2006

      Course Hero Alternatives

    1. Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.
    2. Brainscape - Find, create, and study SMART FLASHCARDS on any device. DOUBLE your learning speed using the most effective study system on the planet. Keep all your content in sync across Brainscape's website and your Android devices.
    3. Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
    4. » All Course Hero alternatives

  2. 27

    Varsity Tutors

    Award-Winning Tutoring & Test Prep In 2,500+ Subjects

    Education Online Tutoring Online Learning

    Headquarters: St Louis, MO
    Released: 17 Oct 2007

      Varsity Tutors Alternatives

    1. TutorTrac - Classroom Management
    2. TutorCruncher - Business management for tutoring companies
    3. Oases - OASES is a game created by Armel Gibson that attempts to explore what might have happened to his grandfather, who went missing while flying in Algeria in 1960... read more.
    4. » All Varsity Tutors alternatives

  3. 33

    Udemy

    Online Courses - Learn Anything, On Your Schedule

    Education Online Learning Online Courses

    Headquarters: San Francisco, CA
    Released: 11 May 2010

      Udemy Alternatives

    1. Collaborator - Система дистанційного навчання повного циклу із аналітикою в реальному часі та інструментами внутрішнього маркетингу.
    2. LinkedIn Learning - Online training through LinkedIn's professional network.
    3. Udacity - Join Udacity to learn the latest in Deep Learning, Machine Learning, Web Development & more, with Nanodegree programs & free online courses.
    4. » All Udemy alternatives

  4. 38

    Coursera

    Build skills with courses, certificates, and degrees online from world-class universities and companies

    Education Online Courses Online Learning

    Headquarters: Mountain View, CA
    Released: 01 Apr 2012

      Coursera Alternatives

    1. Udemy - Online Courses - Learn Anything, On Your Schedule
    2. Adobe Captivate Prime LMS - Adobe Captivate Prime LMS is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
    3. Moodle - Moodle - Open-source learning platform | Moodle.org
    4. » All Coursera alternatives

  5. 39

    Wyzant

    Learn on your terms from an expert tutor. Private, 1–on–1 lessons with the expert instructor of your choice.

    Education Online Education Online Learning Online Tutoring

    Headquarters: Chicago, IL
    Released: 21 Sep 2005

      Wyzant Alternatives

    1. Chegg - Save $$ on textbooks. Rent, buy or sell your books today and get 24/7 homework help when you need it with Chegg Study and Chegg Tutors.
    2. Talentnook - At Talentnook, find a Tutor, Instructor or a Teacher for your kids in your neighborhood. Teach Music lessons, Dance lessons, Art lessons, Chess, Programming.
    3. Preply - Large database of experienced English language tutors. Native speakers. Flexible payment system
    4. » All Wyzant alternatives

  6. 43

    MasterClass

    MasterClass offers online classes created for students of all skill levels. Our instructors are the best in the world.

    Education Online Courses Online Learning

    Headquarters: San Francisco, CA
    Released: 12 May 2015

      MasterClass Alternatives

    1. Udemy - Online Courses - Learn Anything, On Your Schedule
    2. AMPLI.FI - Live online music community. Twitch for tunes.
    3. Workshop - Learn new skills simply by doing them.
    4. » All MasterClass alternatives

  7. 54

    TakeLessons

    Private Lessons & Group Classes. We help students pursue their passion for learning. Search thousands of 5-star rated teachers with background checks and find the perfect teacher today!

    Education Online Learning Online Courses Online Tutoring

    Headquarters: San Diego, CA
    Released: 01 Jun 2006

      TakeLessons Alternatives

    1. Fons - Fons is a web-based Appointment Scheduling and Billing solution created primarily for appointment-based professionals and businesses.
    2. Schedulista - Schedulista is the easiest way to accept and schedule appointments online.
    3. BookSteam - BookSteam Online booking and appointment scheduling software for businesses worldwide. Easy to use, cloud based web scheduler that includes class and group bookings. Calendar management and schedule organization, trusted by thousands.
    4. » All TakeLessons alternatives

  8. 57

    SkillShare

    Skillshare is a learning platform with online classes taught by the world's best practitioners.

    Online Learning Education Online Courses

    Headquarters: New York, NY
    Released: 01 Dec 2010

      SkillShare Alternatives

    1. Udemy - Online Courses - Learn Anything, On Your Schedule
    2. Coursera - Build skills with courses, certificates, and degrees online from world-class universities and companies
    3. Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
    4. » All SkillShare alternatives

  9. 63

    Wonderschool

    Child Care Services & In-Home Preschool. Wonderschool pairs parents with in-home child care programs near them that fit the needs of their lifestyle and child's development.

    Childcare Software Parental Kids Education Education

    Headquarters: San Francisco, CA
    Released: 01 Jun 2016

      Wonderschool Alternatives

    1. Outschool - Take small-group classes, from anywhere. 8000+ video chat classes for K-12 science, art, mindfulness, english, social studies, life skills, and more!
    2. AltSchool - School, reimagined.
    3. Care.com - Find babysitters, nannies, childcare, and home senior care.
    4. » All Wonderschool alternatives

  10. 69

    Outschool

    Take small-group classes, from anywhere. 8000+ video chat classes for K-12 science, art, mindfulness, english, social studies, life skills, and more!

    Education Kids Education Online Learning

    Headquarters: San Francisco, CA
    Released: 01 Jun 2015

      Outschool Alternatives

    1. Wonderschool - Child Care Services & In-Home Preschool. Wonderschool pairs parents with in-home child care programs near them that fit the needs of their lifestyle and child's development.
    2. AltSchool - School, reimagined.
    3. Varsity Tutors - Award-Winning Tutoring & Test Prep In 2,500+ Subjects
    4. » All Outschool alternatives

  11. 90

    Verbling

    The Modern Way to Learn a Language. Language lessons with native 5-star teachers over video chat. Anytime, anywhere.

    Education Language Learning Online Learning

    Headquarters: San Francisco, CA
    Released: 01 Jun 2011

      Verbling Alternatives

    1. Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
    2. Italki - italki is a language learning social network that connects students and language teachers.
    3. Rosetta Stone - Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.
    4. » All Verbling alternatives

Note: The "Marketplace 100" index here is following the a16z Marketplace 100 index. It is an extended version and not an affiliate of a16z.
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References: