Life & fun · alternatives · 2026
24 alternatives to Unsolved!
The History and Mystery of the World's Greatest Ciphers
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Unsolved! launched in 2017; newer entries below may have overtaken it.
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Adventures as the world's most wanted hacker
2015 · amazon.com · its alternatives →
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The best book about adventures and crypto-currency.
2015 · amazon.com · its alternatives →
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Code▲76The Hidden Language of Computer Hardware and Software
2016 · namecheap.com · its alternatives →
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The world's first 'fully' open source book
2015 · kickstarter.com · its alternatives →
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Crypto 101▲126Free Intro course on cryptography available for programmers
2014 · crypto101.io · its alternatives →
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Cryptography from Caesar Ciphers to Digital Encryption
2017 · amazon.com · its alternatives →
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Check if your data has been leaked & get a better password
2017 · its alternatives →
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A less-than-factual guide to our amazing world
2015 · fakescience.org · its alternatives →
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Introduction to Bitcoin and Cryptocurrency technologies
2016 · d28rh4a8wq0iu5.cloudfront.net · its alternatives →
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Spy the Lie▲65Former CIA officers teach you how to detect deception
2017 · amazon.com · its alternatives →
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The history behind one of the most dangerous numbers
2015 · amazon.com · its alternatives →
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Deep▲64Freediving, renegade science, + the secrets of the ocean
2016 · amazon.com · its alternatives →
- 22
What programmers need to know about web servers.
2015 · book.serversforhackers.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →