meteoblue AG
Precipitation radar, HD satellite images, and current weather warnings, hourly temperature, chance of rain, and sunshine hours.
free
crt.sh | Certificate Search
Free CT Log Certificate Search Tool from Sectigo (formerly Comodo CA)
Mathematics Monster
Mathematics Monster. Free online Mathematics lessons and tests. Glossary of mathematical terms.
Excelation:pin-it
Online-Umfragen erstellen in wenigen Schritten – einfach und kostenlos
GitHub - public-apis/public-apis: A collective list of free APIs
A collective list of free APIs. Contribute to public-apis/public-apis development by creating an account on GitHub.
ProjectSend
ProjectSend is a free, open source software that lets you share files with your clients, focused on ease of use and privacy.
DWD - Opendata
Entgeltfreie Versorgung mit DWD-Geodaten über den Serverdienst
Swimlanes.io
Swimlanes.io is a simple free online tool for making sequence diagrams
Online CRC-8 CRC-16 CRC-32 Calculator
Calculate CRC-8, CRC-16, CRC-32, MD5 checksums online for free
Elephind.com: Search the world's historic newspaper archives
Search free historic newspaper archives from Chronicling America (United States), Trove (Australia), and many more.
Iconic — Free “do wtf you want with” pixel-perfect icons
Free, “do wtf you want with” pixel-perfect icons. New icons added every week.