
Khan Academy
ChemHelp.app
Coursera
PDF Drive
Udemy
Archive.org
Chem Citation Tools
online platform for the construction, customization, and dissemination of open educational resources (OER)

Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing
Which is more popular?
Based on our record, LibreTexts seems to be more popular. It has been mentioned 16 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | libretexts.org | devfinancetools.com |
| Pricing | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of LibreTexts yet.
DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
LibreTexts Overview
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using LibreTexts and DevFinanceTools. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


The books recommended all look expensive, so not for dabbling. 2. A quick search turned up a bunch of free resources that look helpful: LibreTexts ( https://libretexts.org ). - Source: Hacker News / about 3 years ago
There are open-source textbooks available free as pdfs from openstax.org and libretexts.org I can't speak to the organic ones, but the general and analytical texts are as good as any hardcover text. Source: about 3 years ago
You can also get more up to date, peer reviewed texts as free pdfs from openstax.org or libretexts.org. Source: over 3 years ago
Tracking DevFinanceTools since Aug 2026.
When comparing LibreTexts and DevFinanceTools, you can also consider the following products.

Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
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Helping you make rational decisions, one calculation at a time.
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Clear chemistry lessons, worked examples, and practice questions for high school students, organized by unit and difficulty.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Build skills with courses, certificates, and degrees online from world-class universities and companies
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Should you build an internal tool? Or just buy it?
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