About HarmonyFidelis
Free tools and educational resources for everyone: individuals, students and professionals.
Our Mission
HarmonyFidelis aims to democratize access to digital tools and quality knowledge. We believe everyone deserves free, reliable and well-designed resources.
Our unique approach structures knowledge according to the Universal Method — an epistemic taxonomy that clearly distinguishes verified facts from hypothetical ones, enabling rigorous and honest learning.
Our Values
Truth
Verified and sourced content. We clearly distinguish facts, hypotheses and speculations.
Clarity
Accessible explanations, structured from simple to complex.
Efficiency
Fast tools, no mandatory registration, respectful of your time.
Free
All tools and articles are free. The site is funded by non-intrusive advertising.
What we offer
Free online tools
Converters, generators, calculators — all work directly in your browser, no registration required.
Academy — Structured learning
Articles organized by domain and complexity level: Fundamental principles, Assembled systems, Practical applications.
Open Source
The source code is available on GitHub. Contribute, report bugs, suggest improvements.
The Creator
How the site is funded
HarmonyFidelis is an independent project funded by:
- • Google AdSense — Google AdSense ads — non-intrusive, respectful of your experience
- • PayPal / Patreon — Voluntary donations — via PayPal and Patreon for those who wish to support the project
No personal data is sold. See our privacy policy.
Contact
For any question, suggestion or bug report:
- 📧 Email : Contact form
- 🐛 Bugs & suggestions : GitHub Issues
Last updated : 2026-08