quizlet.com

1.

Google Tag Manager

94.03% • Google • Essential

2.

Cloudflare

93.02% • Cloudflare • CDN

3.

Quantcast

90.63% • Quantcast International Limited • Advertising

4.

ScoreCard Research Beacon

90.31% • comScore, Inc. • Site Analytics

5.

DoubleClick

68.29% • Google • Advertising

6.

PageFair

67.08% • Blockthrough • Customer Interaction

7.

Google User Content

66.49% • Google • CDN

8.

Ad Lightning

66.43% • Ad Lightning • Advertising

9.

Amazon Advertising

66.31% • Amazon • Advertising

10.

Google Analytics

58.44% • Google • Site Analytics

11.

PubMatic

57.26% • PubMatic, Inc. • Advertising

12.

Index Exchange

56.68% • Index Exchange, Inc. • Advertising

13.

Rubicon

56.34% • The Rubicon Project, Limited • Advertising

14.

Yahoo!

56.24% • Verizon • Site Analytics

15.

AppNexus

56.23% • Microsoft • Advertising

16.

ShareThrough

55.63% • Sharethrough, Inc • Advertising

17.

Sonobi

55.22% • Sonobi, Inc • Advertising

18.

Teads

54.22% • Teads • Advertising

19.

Yahoo! Analytics

50.93% • Verizon • Site Analytics

20.

ID5 Sync

49.63% • ID5 Technology Ltd. • Site Analytics

21.

TikTok Analytics

44.82% • ByteDance Inc • Site Analytics

22.

AppsFlyer

44.41% • AppsFlyer • Site Analytics

23.

ad-delivery.net

36.42% • • Misc

24.

Amazon CloudFront

35.25% • Amazon • Hosting

25.

CookieLaw by OneTrust (formerly Optanaon)

34.57% • OneTrust • Consent Management

26.

Google

32.78% • Google • Advertising

27.

Facebook Social Graph

24.75% • Meta • Social Media

28.

Brandmetrics.com

23.77% • • Advertising

29.

GrowthCode Analysis

22.17% • GrowthCode • Site Analytics

30.

Facebook CDN

19.06% • Meta • CDN

31.

OneTrust

18.56% • OneTrust • Consent Management

32.

sovrn

12.03% • Sovrn Holdings Inc • Advertising

33.

Criteo

9.81% • Criteo • Advertising

34.

Google Static

6.6% • Google • CDN

35.

Google Fonts

4.87% • Google • CDN

36.

33Across

4.72% • 33Across • Advertising

37.

OpenX

4.41% • OpenX Software Ltd. • Advertising

38.

SMART AdServer

4.03% • Smart Adserver • Advertising

39.

Google Syndication

3.95% • Google • Advertising

40.

TripleLift

3.87% • TripleLift, Inc. • Advertising

41.

Media.net

3.81% • Media.net • Advertising

42.

LiveRamp

3.34% • Acxiom • Advertising

43.

Live Intent

3.34% • LiveIntent • Site Analytics

44.

Lotame

3.27% • Lotame • Advertising

45.

Conversant

2.87% • Conversant • Advertising

46.

Google AdServices

2.45% • Google • Advertising

47.

TradeDesk

2.36% • The Trade Desk • Advertising

48.

RTB House

2.36% • RTB House • Advertising

49.

Bidswitch

2.3% • Criteo • Advertising

50.

Adobe Audience Manager

2.16% • Adobe • Advertising

51.

PulsePoint

2.02% • PulsePoint, Inc. • Advertising

52.

Turn Inc.

1.95% • Singtel • Advertising

53.

Pangle

1.89% • ByteDance Inc • Advertising

54.

Google APIs

1.88% • Google • CDN

55.

StackAdapt

1.87% • StackAdapt • Advertising

56.

Zeta

1.83% • Zeta Global • Customer Interaction

57.

MediaMath

1.8% • MediaMath, Inc. • Advertising

58.

SiteScout by Centro

1.8% • Centro • Advertising

59.

Connatix

1.79% • Connatix Native Exchange Inc. • Advertising

60.

Tapad

1.6% • Telenor Group • Advertising

61.

Dotomi

1.53% • Conversant • Advertising

62.

Yahoo! Ad Manager Plus

1.45% • Verizon • Advertising

63.

Adform

1.44% • Adform • Advertising

64.

Rhythmone Beacon

1.37% • RhythmOne, LLC • Advertising

65.

StreamRail

1.37% • ironSource • Advertising

66.

Beeswax

1.35% • Beeswax • Advertising

67.

Intent IQ

1.31% • AlmondNet • Advertising

68.

ADman Media

1.25% • illumin • Advertising

69.

Flickr Badge

1.25% • SmugMug • Social Media

70.

Facebook

1.21% • Meta • Advertising

71.

StickyAds

1.15% • Comcast • Advertising

72.

Simpli.fi

1.14% • Simplifi Holdings Inc. • Advertising

73.

DeepIntent

1.05% • Deep Intent • Advertising

74.

Zemanta

1.04% • Outbrain • Customer Interaction

75.

DataXu

1.03% • DataXu • Advertising

76.

Adelphic

1.03% • Viant • Site Analytics