E-Mail-Blacklist-Tester
This is to use if you have email deliverability issues.It will check if your IP or domain name is on one or several of online email blacklists (and give you some advises if this is confirmed).
Solarpanel-Rechner
Select you location on a world map, define your solar panels mounting style and orientation, and it will calculate the power produced over the day, month or year. Uses various GIS databases and models.The PVGIS API 5.2 provides programmatic access to the European Commission’s Joint Research Centre solar resource and photovoltaic (PV) performance databases, enabling […]
Tägliche Berichte von Netblocks zur Internetverbindung
NetBlocks is a global internet monitor and watchdog that provides real-time measurement and analysis of internet connectivity, cybersecurity, and digital governance.The platform utilizes a distributed network of probes and advanced data analytics to detect and document internet shutdowns, social media restrictions, and cyberattacks on critical infrastructure. Its primary services include the Internet Observatory, which offers […]
Kosten des Tools zur Internetabschaltung (KOSTEN)
The NetBlocks Cost of Shutdown Tool (COST) is a data-driven analytical service that estimates the economic impact of internet disruptions, including total blackouts, mobile data outages, and social media restrictions.By integrating public economic indicators from the World Bank, ITU, and Eurostat with methodologies from the Brookings Institution and CIPESA, the platform generates financial loss projections […]
YaCy P2P Eigene Suchmaschine
YaCy is a decentralized, peer-to-peer (P2P) search engine framework that operates without a central server or governing authority. Each user installs a local node that crawls and indexes web pages, contributing to a distributed global index or maintaining a private, localized index. The service provides a fully open-source (GPL) alternative to centralized search engines, offering […]
ASM Internationale Publikationen
An incredibly valuable resource for mechanical engineering.But the ASM Handbooks are not freely available, not even partially. The Digital Library is a paid subscription product.What ASM does offer free is limited:Journals via Subscribe-to-Open (S2O) In 2025 ASM adopted a Subscribe-to-Open model for its 6 primary research journals, meaning articles are published open access if the […]
Abbott Aerospace Technische Bibliothek
The Abbott Aerospace Technical Library provides a centralized repository of over 17,000 technical documents and computational tools for aerospace structural analysis and design. The collection includes digitized NACA, NASA, and ARC reports, alongside proprietary Microsoft Excel spreadsheets for stress analysis and the “Analysis and Design of Composite and Metallic Flight Vehicle Structures” textbook.Key resources available […]
MIL-HDBK-5J Metallische Werkstoffe und Elemente für Luft- und Raumfahrzeugstrukturen
MIL-HDBK-5J Metallic Materials and Elements for Aerospace Vehicle Structures is the free precursor of MMPDS. This is the last DoD-published edition, dated January 31, 2003, superseded by MMPDS-01 but technically equivalent to it. It contains design mechanical and physical properties, joint allowables, and material data coordinated with the Air Force, Army, Navy, and FAA. It’s […]
Datenübersicht zum Thema Human Engineering Design
The the Reliability, Maintainability, and Supportability (RMS) Guidebook, a technical publication from the Reliability Information Analysis Center (RIAC). It provides a standardized engineering framework for implementing RMS principles across the entire system lifecycle, from initial concept through sustainment.(open the “Open PDF” link to access the full document)The guidebook delivers methodologies for reliability modeling, maintainability predictions, […]
Digitale Bibliothek mathematischer Funktionen des NIST (DLMF)
The NIST Digital Library of Mathematical Functions (DLMF) serves as the authoritative, peer-reviewed successor to the Abramowitz and Stegun Handbook of Mathematical Functions. It provides a comprehensive digital repository of mathematical formulas, identities, and properties for special functions used in advanced analysis. The site offers:Rigorous definitions and notations for Bessel, Airy, and hypergeometric functions.Interactive 3D […]