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A collection of handy Bash one-liners and terminal tricks for data processing and Linux system maintenance, covering topics such as terminal multiplexers, variables, grep, sed, awk, xargs and networking. The author notes it is mainly used on Ubuntu, Amazon Linux, RedHat, Linux Mint, Mac and CentOS.
German library association and union catalog.
Internet intelligence tool for looking up ASN details, IP information, and BGP routing data.
Blockaid is a real-time onchain security platform for web3 builders. It offers transaction security, address scanning, token scanning and dApp scanning, and combines its data network with a policy engine so threat verdicts reflect both its intelligence and customer policies. It also lists end user protection, onchain monitoring, crypto fraud prevention and cosigner products for wallets, DeFi operators, exchanges, banks and asset managers.
Blocky is a DNS proxy and ad-blocker for the local network written in Go. It blocks DNS queries using external ad-block and malware lists, with allowlists configurable per client group and periodic reloading of lists. It supports DNS over UDP, TCP, HTTPS, TLS, QUIC and HTTPS/3, and does not collect user data or telemetry.
Discover, track, and share your reading journey on the decentralized Nostr network. No corporations. No ads. No data tracking. Just books.
Cadmapper creates 3D CAD files of any area in the world from public data sources such as OpenStreetMap, NASA and USGS, producing organized, layered drawing files. Areas up to 1 km2 are free, files up to 100 km2 cost a small fee, and whole-city road network DXF files are free. It targets designers, architects and illustrators, with support for AutoCAD and SketchUp.
Find scholarly literature and bibliographic records using structured search fields.
Cisco Talos Intelligence operates an IP and Domain Intelligence Center for real-time threat detection. It publishes threat data including daily volume and volume change metrics for top email and spam sending countries. The service also accepts incident response inquiries for emergency network security needs.
correspSearch is a web service for searching scholarly editions of letters, including by sender, recipient, location, date, and full text. It aggregates files in the Correspondence Metadata Interchange Format and offers filter options, visualizations such as bar charts, maps, and networks, an API, and the csLink widget for linking letters across editions.
A page from the Fake Name Generator that checks a credit card number's network, length and Luhn check digit. It explains the Luhn check step by step and offers sample made-up numbers for testing forms. The page notes the sample numbers are not accounts and are declined by payment gateways.
Devina.io is an online development toolkit offering advanced tools for developers, designers and content editors. It lists 78 tools grouped into categories such as general, data, media, networking and website utilities, including a text diff viewer, JSON viewer and PDF transformer. The PDF transformer is a QPDF GUI for content-preserving transformations including linearization and encryption.
Search an online collection of books, documents, media and archival records.
European Alternatives is a directory that helps users find European alternatives for digital services and products, such as cloud services and SaaS products. It lists alternatives across categories including web analytics, cloud computing platforms, content delivery networks, email providers, VPS hosters and search engines. It explains benefits such as supporting local businesses, data protection, VAT billing and similar legal requirements within the EU.
A database of IP addresses that have been part of the Tor network. It answers the question whether there was a Tor relay running on a given IP address
Filen is a cloud storage service built around zero-knowledge end-to-end encryption, with client-side encrypted storage for individuals. It offers features for syncing, sharing and organizing data, including a network drive and Smart Sync. Paid plans range from 200 GiB to 10 TiB of storage; a free tier starts with 10 GiB of space.
Heritrix is a web archiving or scraping tool for saving pages, data, or online content.
HWiNFO is a free system information, monitoring and diagnostics tool for Windows and DOS. It provides in-depth hardware information, real-time system monitoring and extensive reporting, and the publisher states it does not collect personal information or transmit data over the network.
IDChain Explorer is a BlockScout-based block explorer for the IDChain network. It provides analytics data, an API and smart contract tools, and displays blocks, transactions, price, market cap, average block time, total transactions, total blocks and wallet addresses. API documentation covers Etherscan-compatible and Ethereum JSON-RPC endpoints.
iNaturalist is a free, nonprofit social network for naturalists where users record observations of plants, animals, and fungi, share them with friends and researchers, and get identification suggestions confirmed by a global community. Observations become open data used by scientists and conservationists.
DB-IP provides an IP geolocation API and database covering IPv4 and IPv6 address spaces, with data on locations and network intelligence. It lists uses including location-aware content, traffic surveys and risk analysis. A free download is offered.
The U.S. ISSN Center, part of the international ISSN Network, assigns International Standard Serial Numbers to serials published in the United States, including journals, magazines, newsletters, newspapers and annuals in print or online. Each medium version receives a separate ISSN. The center offers an ISSN Uplink account for submitting applications online and tracking progress.
A beginner-friendly guide on using Keras to implement a simple neural network in Python. It walks through MNIST handwritten digit classification, covering setup, data preparation, building the model, compiling, training, testing and using the model. It is intended for complete beginners to Keras who have a basic background knowledge of neural networks.
LAION, the Large-scale Artificial Intelligence Open Network, is a non-profit organization that provides datasets, tools and models to support open machine learning research. Its offerings include the LAION-400M dataset of 400 million English image-text pairs, LAION-5B of 5.85 billion multilingual CLIP-filtered pairs, and the CLIP H/14 vision transformer model.
