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OpenStax | Free Textbooks Online with No Catch

OpenStax offers free college textbooks for all types of students, making education accessible & affordable for everyone. Browse our list of available subjects!

Description excerpted from the original listing, which is linked below.

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Facts

Published: 13 Sep 2026 (13 Sep 2026)
Medium: web
Language: English (the page says so itself)
Subject: Learning (read from the page)
First seen: 24 Sep 2026, 23:16 UTC

Built with

Not known. Nothing about this item shows which tool wrote it, and we would rather say so than guess.

What we can see

74 hygiene score

Certificate issued by Amazon RSA 2048 M04, 185 days remaining
Cookie attributes no cookies set
Credentials and payment does not ask for either
No strict transport security
Served over HTTPS
Mail authentication sender policy and authentication published
No insecure resources
Redirects none
Security headers 0 of 5 set
Third-party origins 3
Transport security TLS 1.3

Observed 24 Sep 2026 by fetching the page as a browser would. This describes hygiene and transparency, not safety: a missing header does not make a site dangerous, and a complete set does not make it trustworthy.

Made this?

Show it on your own site or README. It links back to this page.

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For a web page

<a href="https://bitsexplorer.com/i/492126/openstax-free-textbooks-online-with-no-catch"><img src="https://bitsexplorer.com/badge/492126.svg" alt="Featured on BitsExplorer" height="22"></a>

For a README (Markdown)

[![Featured on BitsExplorer](https://bitsexplorer.com/badge/492126.svg)](https://bitsexplorer.com/i/492126/openstax-free-textbooks-online-with-no-catch)

Changes we have seen

24 Sep 2026 first indexed

OpenStax | Free Textbooks Online with No Catch

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