Acquired by on May 14, 2008
Total Equity Funding
$28.3M in 4 Rounds from 8 Investors
Sunnyvale, California
Plaxo is a cloud-based online address book that synchronizes, updates and unifies the user's contacts across multiple sources.
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Contact Management, Digital Entertainment, TV

Company Details


Plaxo helps keep people connected by solving the common and frustrating problem of out-of-date contact information. Users and their contacts store their information on Plaxo's servers. When a user edits their own information, the changes appear in the address books of all those who listed the user in their own address books. Because contacts are stored in a central location, it's possible to list connections between contacts and access the address book from anywhere.

Napster co-founder, Sean Parker, was one of Plaxo's founders

Funding Rounds (4) - $28.3M

DateAmount / RoundValuationLead InvestorInvestors
Feb, 2007$9M / Series D$122M1
Apr, 2004$7M / Series C$64M4
Jul, 2003$8.5M / Series B$33.5M3
Nov, 2002$3.8M / Series A$7.5M3

Current Team (4)


Board Members and Advisors (1)


Products (3)

  • Unify all your contact info in a single, smart address book that’s secure in the cloud, organized, and available wherever you are.
  • Plaxo Personal Assistant was added to CrunchBase in 2011
  • Plaxo Pulse is Plaxo's foray into social networking, building a social network around third-party data.

Competitors (13)

  • Alternion is a social hub and communications center combining and managing users’ social web, email and direct messages in one app.
  • Fruux offers a cross-platform synchronization service that enables users to synchronize contacts and calendars across different devices.
  • Gist is a mobile app that creates rich business profiles to provide a full view of the contacts in a user's professional network.
  • Jigsaw provides business information and data services that leverage user-generated content of the B2B community.
  • A fast next-generation search and productivity tool for standard and virtual desktops, for private and enterprise search requirements.
  • Memotoo helps consumers sync and store data in their iCloud.
  • TAPP was created in response to the need for a smarter, private way of exchanging and managing contact information.
  • Socialthing synchronizes personal information and enables users to manage multiple social networking feeds from a single web dashboard.

Offices/Locations (1)

  • HQ

    1050 Enterprise Way, 5th floor

    Sunnyvale, California 94089

    United States

Images (4)


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