ExoneraTor is a Tor Metrics service that maintains a database of IP addresses that have been part of the Tor network. It answers whether a Tor relay was running on a given IP address on a given date. It may store more than one IP address per relay and records whether a relay permitted transit of Tor traffic to the open Internet at that time.
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Flags of the World (FOTW) is a site devoted to the study of vexillology, founded in 1994. It is produced and maintained by an editorial staff of unpaid volunteers, and its pages are offered freely to the Internet community. The site includes national, state, municipal, organizational and historical flags and ensigns.
The General Index is a public research resource created by nonprofit organization Public Resource. It contains three tables derived from 107,233,728 journal articles: an n-gram table (unigrams to 5-grams) paired with article IDs, a keyword table paired with article IDs, and a metadata table linking article IDs to associated metadata. It was published on 2021-10-07 under a CC0 1.0 Universal license, with data files hosted on the Internet Archive.
This OSINT Toolkit serves as a reference for search operators and specialized search tools for Google and Bing. It documents available Google functions including exact phrase search, site-specific search, related site lookup, cached page viewing, and Google Trends comparison tools, as well as unique Bing features including IP address-matched site searches and website feed lookups, to support internet-based research.
Internet-based database of comic book information.
This dataset maps the network layer of the Invisible Internet Project (I2P), collected using the SWARM-I2P framework, which deployed I2P routers as mapping agents. It documents over 50,000 nodes with metrics such as bandwidth, latency, and uptime, plus network traffic records and geographic distribution. Node identifiers were anonymized. Data is available in CSV and TXT formats on Zenodo, with mapping scripts on GitHub.
The site allows you to look up domain registration information (WHOIS) on the internet
A web service that displays the visitor's public IP address. It states that the address is assigned by the Internet Service Provider and can indicate general geographic location, and it suggests uses such as checking the current address, verifying a network connection and sharing the address with support teams for troubleshooting. It notes that only the IP is shown.
Irchiver is a research project and software that automatically takes screenshots of web content and provides full-text search of browsing history. It runs on Windows and Mac with several browsers and stores screenshots as WebP plus text files in a local folder without network connectivity.
Let's Encrypt is a free, automated, and open Certificate Authority operated by the nonprofit Internet Security Research Group. It provides free TLS certificates so websites can enable HTTPS encryption; obtaining a certificate requires demonstrating control over the domain, and issuance uses the ACME protocol with client software.
An interactive educational game built for the Google Gemma 3n Impact Challenge. It uses Gemma 3n via Ollama for on-device, structured educational conversations about sustainable farming and botany, and runs locally with no internet required for core features.
The NetBlocks Cost of Shutdown Tool estimates the economic impact of internet shutdowns, network disruptions and social media throttling in a country. It uses indicators from the World Bank, ITU, Eurostat and U.S. Census. The project describes its figures as illustrative estimates that may change over time.
Netlas.io is an internet intelligence platform that provides accurate technical information on IP addresses, domain names, websites, web applications, IoT devices, and other online assets. It supports discovery, research, and monitoring of online assets.
The NIST Chemistry WebBook provides access to chemical and physical property data for chemical species over the internet. Data come from collections maintained by the NIST Standard Reference Data Program and outside contributors. The system organizes data by chemical species, allows searching by various means, and displays data including thermochemical and thermophysical properties and optical, electronic and mass spectra.
Nomads.com, formerly Nomad List, is a community and research site for digital nomads and remote workers. It offers tools to explore places based on cost of living, internet speed and weather, and a global community with meetups, chat and a members map. The site states it has been the #1 Nomad Community since 2014.
OH SHINT! is an OSINT resource for online investigations, research links, search methods, and public data tools.
OneConverter is a free online service for converting PDF files and units of measure, intended for work, study and business. It offers file conversion, unit converters and PDF tools such as merging, splitting and compressing, and works on Windows, Mac and Linux with an internet connection.
OSINT Combine is an OSINT resource for online investigations, research links, search methods, and public data tools.
Curated OSINT toolkit with links for people search, social media, maps, domains, and research.
OSINT Tool Explorer is an OSINT resource for online investigations, research links, search methods, and public data tools.
OSINTgeek is an OSINT resource for online investigations, research links, search methods, and public data tools.
PhiloBiblon is a free internet-based bio-bibliographical database of texts written in Romance vernaculars of the Iberian Peninsula during the Middle Ages and early Renaissance. The legacy version's data were frozen on 1 January 2025, and the active version is available through the PhiloBiblon Viewer. It consists of four bibliographies: BETA, BIPA, BITAGAP and BITECA.
PhishTank is a collaborative clearing house for data and information about phishing on the Internet, operated by Cisco Talos Intelligence Group. Users can submit suspected phishes, track the status of their submissions, and verify other users' submissions. It also provides a free open API for developers and researchers to integrate anti-phishing data into their applications.
PressPulse AI is an AI agent built for HARO monitoring. It sends relevant media opportunities from across the internet and supports reviewing and responding to them. The tool matches requests to a professional background and offers AI pitch drafting, domain authority data, first-mover notifications, favorites and blocklists, and integration with platforms including Twitter, LinkedIn and Substack.