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SimilarWeb, Ltd.
SimilarWeb logo.svg
Type of businessPrivate
Founded2007; 12 years ago (2007)
HeadquartersNew York City, New York, U.S.
London, England
Tel Aviv, Israel
Area servedWorldwide
Founder(s)Or Offer
IndustryAdvertising, Information technology
ServicesWeb analytics
Launched2007 (2007)
Current statusOnline

SimilarWeb is a website which provides web analytics services for businesses. The company offers its customers information on their clients' and competitors' website traffic volumes; referral sources, including keyword analysis; and website "stickiness" (e.g., time on site, page views, bounce rate), among other features.

Like Alexa Internet, it extrapolates data from a panel of web users who allow to monitor their internet activity, combined with direct observations for a subset of internet properties, such as websites' own traffic statistics. In 2019, it claimed to have the world's largest panel, with hundreds of millions users.[1]


The company was founded in 2007 by Or Offer in Tel-Aviv, Israel.[2] By 2009 SimilarWeb won the first Israeli SeedCamp, attracting the attention of international media and investors; the company raised its Series A round of $1.1 million[3] with the investment being led by Yossi Vardi, and Docor International Management. SimilarSites, a browser extension to help users find sites similar to those they are visiting, was launched later that year.

On September 24, 2013, the company closed a $6 million[4] Series B round led by David Alliance, Moshe Lichtman with the participation of existing investor Docor International Management.[5] On February 24, 2014, South Africa media giant Naspers invested $18 million into SimilarWeb and leading their Series C round.[6] Within a month, SimilarWeb used a part of the capital for the acquisition of Israeli early-stage company TapDog for a few million dollars in shares and cash, less than a year after TapDog was founded.[7] In November 2014 raised $15 million in a series D investment.[8][9] In July 2015, SimilarWeb acquired personalized content discovery platform developer Swayy.[10][11]

On December 10, 2015, SimilarWeb announced it had acquired Quettra, a Silicon Valley-based mobile intelligence startup, to boost its mobile operations.[12][13] Quettra provided personalization tools for developers in return for detailed mobile telemetry data.

In July 2017, the company announced a $47 million round of financing led by Viola Growth, Saban Ventures with participation from CE Ventures and existing investors.[14]

On September 8, 2019, SimilarWeb updated the algorithm that use to produce traffic and engagement statistics; the update took into account the behaviour of visitors to similar kinds of sites to improve the depth and dependability of their data.[15]

See also[edit]


  1. ^ "Our Data".
  2. ^ "SimilarWeb organization". CrunchBase. Retrieved 3 August 2014.
  3. ^ "Series A funding". TechCrunch. Retrieved 24 August 2014.
  4. ^ "Series B additional funding". CrunchBase. Retrieved 24 August 2014.
  5. ^ "Docor International Management". VentureDeal. Retrieved 24 August 2014.
  6. ^ "Series C funding". CrunchBase. Retrieved 24 August 2014.
  7. ^ "TapDog Acquisition". Globes Inc. Retrieved 24 August 2014.
  8. ^ Sarah Perez (29 January 2013). "SimilarGroup Raises $2.5 Million To Take On Alexa's (Often Terrible) Web Rankings With Its New SimilarWeb Service". TechCrunch. Retrieved 6 June 2015.
  9. ^ Rebecca Grant (29 January 2013). "SimilarGroup takes new funding to take on Alexa". VentureBeat. Retrieved 6 June 2015.
  10. ^ "Web traffic analytics co SimilarWeb acquires Swayy - Globes". Globes (in Hebrew). Retrieved 2018-06-05.
  11. ^ "Digital Measurement Service SimilarWeb Acquires Content Discovery Platform Swayy – TechCrunch". Retrieved 2018-06-05.
  12. ^ "Quettra Acquisition". TechCrunch. Retrieved 10 December 2015.
  13. ^ "Analytics company SimilarWeb acquires mobile intelligence startup Quettra for $10M+". VentureBeat. 2015-12-10. Retrieved 2018-06-05.
  14. ^ "SimilarWeb raises $47 million to grow its web and app analytics platform globally". VentureBeat. 2017-07-25. Retrieved 2018-06-26.
  15. ^ "SimilarWeb's Algorithm Update 2019". Retrieved 2019-10-10.