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Northwestern Polytechnical University, Xi'an, China, is a great pick for Mathematics, Engineering and Computer Science.

Peter the Great St Petersburg Polytechnic University, tucked away in St Petersburg, Russia, is strong in Economics, Econometrics and Finance.

Rensselaer Polytechnic Institute — Troy, United States — is legit for Pharmacology, Toxicology and Pharmaceutics and Environmental Science.

Shanghai Polytechnic University, right in Shanghai, China, is legit for Economics, Econometrics and Finance, Energy and Environmental Science.

Shenzhen Polytechnic, based in Shenzhen, China, is pretty great for Mathematics, Agricultural and Biological Sciences and Energy.

Tomsk Polytechnic University in Tomsk, Russia is legit for Energy, Earth and Planetary Sciences and Environmental Science.

Universite Polytechnique des Hauts-de-France out in Valenciennes, France is strong in Chemistry and Engineering.

Virginia Polytechnic Institute and State University — Blacksburg, United States — is where it's at for Engineering, Computer Science and Mathematics.

Worcester Polytechnic Institute, Worcester, United States, is strong in Business, Management and Accounting, Energy and Computer Science.

Wuhan Polytechnic University in Wuhan, China is pretty great for Energy, Agricultural and Biological Sciences and Chemistry.

Xian Polytechnic University, Xi'an, China, is kind of a big deal for Mathematics, Agricultural and Biological Sciences and Environmental Science.

Zhytomyr Polytechnic State University (Zhytomyr, Ukraine) is pretty great for Earth and Planetary Sciences, Energy and Environmental Science.

Calgary City Online

cityonline.calgary.ca

Open-data catalog covering Calgary, Alberta, with filters and downloadable records.

Calibre helps digitize, convert, organize, or manage ebooks and reading libraries.

Open-data catalog covering California, USA, with filters and downloadable records.

Broadcastify Calls status page showing node availability and live feed system activity.

Episode Calendar

episodecalendar.com

Episode Calendar helps research movies and television through searchable title and production information.

Open source email alias service for creating disposable forwarding addresses and protecting inbox privacy.

AnonymMail.net helps create email aliases or forwarding addresses to protect your real inbox.

Email finding and verification service for discovering business email addresses and checking deliverability.

Checker for seeing whether an email appears in the historical Ashley Madison breach dataset.

Can I Email? is a developer resource for coding, documentation, communities, security research, or software tools.

Checks email-related breach signals and exposed data sources to support security reviews and OSINT research.

MXToolbox tool for analyzing email headers, tracing message routes, and spotting delivery or authentication issues.