quizlet.com

1.

Google Tag Manager

93.95% • Google • Essential

2.

Cloudflare

93.65% • Cloudflare • CDN

3.

Quantcast

90.56% • Quantcast International Limited • Advertising

4.

ScoreCard Research Beacon

90.38% • comScore, Inc. • Site Analytics

5.

CookieLaw by OneTrust (formerly Optanaon)

71.98% • OneTrust • Consent Management

6.

DoubleClick

69.56% • Google • Advertising

7.

Google User Content

67.33% • Google • CDN

8.

PageFair

66.8% • Blockthrough • Customer Interaction

9.

Ad Lightning

66.29% • Ad Lightning • Advertising

10.

Amazon Advertising

65.91% • Amazon • Advertising

11.

Google Analytics

57.58% • Google • Site Analytics

12.

PubMatic

55.17% • PubMatic, Inc. • Advertising

13.

OneTrust

55.16% • OneTrust • Consent Management

14.

Index Exchange

55.04% • Index Exchange, Inc. • Advertising

15.

Rubicon

54.72% • The Rubicon Project, Limited • Advertising

16.

Yahoo!

54.57% • Verizon • Site Analytics

17.

AppNexus

54.2% • Microsoft • Advertising

18.

ShareThrough

53.88% • Sharethrough, Inc • Advertising

19.

Sonobi

53.57% • Sonobi, Inc • Advertising

20.

Teads

52.77% • Teads • Advertising

21.

Yahoo! Analytics

48.96% • Verizon • Site Analytics

22.

ID5 Sync

48.41% • ID5 Technology Ltd. • Site Analytics

23.

Brandmetrics.com

47.78% • • Advertising

24.

TikTok Analytics

45.04% • ByteDance Inc • Site Analytics

25.

AppsFlyer

44.54% • AppsFlyer • Site Analytics

26.

ad-delivery.net

37.22% • • Misc

27.

Amazon CloudFront

33.58% • Amazon • Hosting

28.

Facebook Social Graph

25.3% • Meta • Social Media

29.

Facebook CDN

19.56% • Meta • CDN

30.

Google

19.1% • Google • Advertising

31.

Criteo

9.01% • Criteo • Advertising

32.

Google AdServices

8.77% • Google • Advertising

33.

LiveRamp

8.14% • Acxiom • Advertising

34.

33Across

6.34% • 33Across • Advertising

35.

Google Static

4.99% • Google • CDN

36.

sovrn

3.94% • Sovrn Holdings Inc • Advertising

37.

Google Fonts

3.76% • Google • CDN

38.

OpenX

3.61% • OpenX Software Ltd. • Advertising

39.

SMART AdServer

3.35% • Smart Adserver • Advertising

40.

Media.net

3.32% • Media.net • Advertising

41.

TripleLift

3.3% • TripleLift, Inc. • Advertising

42.

Lotame

2.86% • Lotame • Advertising

43.

Google Syndication

2.81% • Google • Advertising

44.

Conversant

2.53% • Conversant • Advertising

45.

RTB House

1.49% • RTB House • Advertising

46.

Google APIs

1.45% • Google • CDN

47.

TradeDesk

1.19% • The Trade Desk • Advertising

48.

Bidswitch

1.18% • Criteo • Advertising

49.

Adobe Audience Manager

1.1% • Adobe • Advertising

50.

Flickr Badge

1.01% • SmugMug • Social Media

51.

PulsePoint

1.01% • PulsePoint, Inc. • Advertising