May 2026
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Global Rank
#2,057,853
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Bounce Rate
40.51%
Pages per Visit
1.77
Avg Visit Duration
00:00:49
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Top 10 knowledgedoor.com Competitors
The Top 10 Sites Like knowledgedoor.com in May 2026 are ranked by their affinity to knowledgedoor.com in terms of keyword traffic, audience targeting, and market overlap
explore the chemical elements through this periodic table
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Global Rank
#335,549
35,077Bounce Rate
38.75%
Pages per Visit
1.63
Avg Visit Duration
00:00:23
Similarity Score
100%the definitive online periodic table reference site including technical data, and photographs and descriptions of thousands of samples of the chemical elements.
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- The Periodic Table
Bounce Rate
40.01%
Pages per Visit
3.06
Avg Visit Duration
00:00:48
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98%this site provides chemistry, environmental and hazardous materials news, careers & resources including: in depth articles; a detailed periodic table of elements; chemical database; hazmat emergency response guides; hazmat placarding information; and much more.
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Global Rank
#1,732,823
392,210Bounce Rate
41.04%
Pages per Visit
1.57
Avg Visit Duration
00:00:18
Similarity Score
92%efunda, the ultimate online reference for the mechanical engineering community
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Global Rank
#674,496
59,898Bounce Rate
40.42%
Pages per Visit
1.84
Avg Visit Duration
00:00:38
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88%- Company
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Bounce Rate
67.01%
Pages per Visit
1.86
Avg Visit Duration
00:01:17
Similarity Score
86%ensdf contains recommended nuclear structure and decay data for all the known nuclides, which are obtained following a critical review of all available experimental data, supplemented with systematic trend studies and theoretical models.
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Bounce Rate
42.67%
Pages per Visit
4.07
Avg Visit Duration
00:03:25
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82%Archer Library: Data Services: About Data
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Bounce Rate
40.7%
Pages per Visit
2.23
Avg Visit Duration
00:02:58
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80%Könyvtárunk köszönti a Magyar Költészet Napját, ez alkalomból tekintsék meg a Szavaljunk Petőfit! felhívásunkra beküldött verseket.
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Bounce Rate
18.72%
Pages per Visit
4.54
Avg Visit Duration
00:04:56
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74%La plateforme EM Premium de Elsevier Masson https://www.em-premium.com/ offre un accès en texte intégral à 46 traités de l’Encyclopédie Médico-Chirurgicale (EMC) Elle offre aussi des outils d’auto-évaluation à l’attention des étudiants Pour y accéder depuis chez vous, n’oubliez pas d’activer votre environnement d’accès à distance. Toute la documentation pour les étudiant.e.s UNIL se trouve à […]
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Global Rank
#1,376,636
599,759Bounce Rate
42.66%
Pages per Visit
2.49
Avg Visit Duration
00:00:24
Similarity Score
71%長野県上田地域図書館情報ネットワーク「エコール」のサイトです。書籍検索・予約、各施設の紹介など。
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Global Rank
#1,556,932
497,299Bounce Rate
26.28%
Pages per Visit
4.49
Avg Visit Duration
00:01:03
Similarity Score
68%knowledgedoor.com's top 5 competitors in May 2026 are: webelements.com, periodictable.com, environmentalchemistry.com, efunda.com, and more.
According to Similarweb data of monthly visits, knowledgedoor.com’s top competitor in May 2026 is webelements.com. knowledgedoor.com 2nd most similar site is periodictable.com, and closing off the top 3 is environmentalchemistry.com.
efunda.com ranks as the 4th most similar website to knowledgedoor.com and periodic-table.rsc.org ranks fifth in May 2026.
The other five competitors in the top 10 list are nndc.bnl.gov, library.uregina.ca, bbmk.hu, bium.ch, and echol.gr.jp.