May 2026
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Global Rank
#94,480
9,100Showing Similarweb estimated data.
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Bounce Rate
40.39%
Pages per Visit
9.29
Avg Visit Duration
00:07:08
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Top 10 isfdb.org Competitors
The Top 10 Sites Like isfdb.org in May 2026 are ranked by their affinity to isfdb.org in terms of keyword traffic, audience targeting, and market overlap
welcome to the fourth edition of the encyclopedia of science fiction.
Global Rank
#313,918
17,712Bounce Rate
43.17%
Pages per Visit
1.94
Avg Visit Duration
00:00:51
Similarity Score
100%browse bestselling fiction authors, books and series in order. sign up to follow authors; keep track of your books; discover new books from our recommendations.
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Global Rank
#15,238
1,656Bounce Rate
36.03%
Pages per Visit
5.83
Avg Visit Duration
00:04:58
Similarity Score
92%View the winners across all 15 categories now!
- Company
- Goodreads
Global Rank
#392
16Bounce Rate
45.19%
Pages per Visit
5.13
Avg Visit Duration
00:04:43
Similarity Score
85%This is a collection of genre links that we've found over the years that you might find useful.
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Bounce Rate
36.38%
Pages per Visit
4.59
Avg Visit Duration
00:01:46
Similarity Score
82%- Company
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Global Rank
#1,710,062
258,243Bounce Rate
41.1%
Pages per Visit
2.10
Avg Visit Duration
00:00:12
Similarity Score
78%dedicated to howard phillips lovecraft, the 20th century master of weird fiction, who died in 1937.
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Global Rank
#131,868
18,038Bounce Rate
42.52%
Pages per Visit
3.19
Avg Visit Duration
00:01:27
Similarity Score
74%- Company
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Global Rank
#1,582,211
1,566,767Bounce Rate
34.28%
Pages per Visit
2.65
Avg Visit Duration
00:02:11
Similarity Score
71%- Company
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Global Rank
#434,115
13,788Bounce Rate
44.58%
Pages per Visit
1.78
Avg Visit Duration
00:00:41
Similarity Score
67%- Company
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Global Rank
#126,909
40,916Bounce Rate
42.3%
Pages per Visit
4.15
Avg Visit Duration
00:01:37
Similarity Score
64%"Which species has stronger telepathy, creates stronger, more believable illusions?" and more great discussions about Memory Alpha
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Global Rank
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Category Rank
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Bounce Rate
55.94%
Pages per Visit
4.55
Avg Visit Duration
00:03:53
Similarity Score
61%isfdb.org's top 5 competitors in May 2026 are: sf-encyclopedia.com, fantasticfiction.com, goodreads.com, worldswithoutend.com, and more.
According to Similarweb data of monthly visits, isfdb.org’s top competitor in May 2026 is sf-encyclopedia.com. isfdb.org 2nd most similar site is fantasticfiction.com, and closing off the top 3 is goodreads.com.
worldswithoutend.com ranks as the 4th most similar website to isfdb.org and fancyclopedia.org ranks fifth in May 2026.
The other five competitors in the top 10 list are hplovecraft.com, speculativeliterature.org, blackgate.com, rpggeek.com, and memory-alpha.fandom.com.