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Surprise is a Python scikit for building and analyzing recommender systems that deal with explicit rating data. It includes built-in datasets, prediction algorithms such as SVD and NMF, similarity measures, and cross-validation tools. The documentation states that Surprise does not support implicit ratings or content-based information.
A collection of free open source intelligence and forensic tools for investigations. It provides links to third-party services for searching general web sources, email addresses, domains, IP addresses, Bitcoin addresses, images, usernames and social media, and includes a mail validation tool.
Intelligence X provides free open source intelligence tools for investigations. The tools search third party sites and perform social media intelligence on Facebook, Twitter, LinkedIn, Telegram and YouTube, alongside email and domain validation and lookup links.
Open source email verification service for checking syntax, MX records, and deliverability through an API.
Universal Encoding Tool is a web-based utility that offers methods for encoding, decoding, encryption, decryption, conversion and hashing. It covers simple conversions between ASCII, binary, hex, decimal and Roman numerals, along with network tools for IP and IPv6. Non-key encoding methods, HTML entities, URL encoding, hash algorithms, key-based encryption ciphers, Unix time conversion and IBAN validation are also listed.
Valid Number offers a free reverse phone lookup service that retrieves available information for phone numbers and lets users validate a number and identify an associated caller. Users can report suspicious calls from the results page, and a list of recently looked-up numbers reported as unsafe is shown.
Vectary is an online, browser-based design platform for developing concepts with AI and creating interactive 3D presentations and AR experiences that can be shared through a single link. Vectary Studio offers modeling, import, real-time rendering, materials, animations, interactions and configurators, with embedding and app-free augmented reality. Vectary Canvas, in beta, is a collaborative AI-driven space for research, ideation and concept validation across 2D, 3D and AR.
Wharton Research Data Services is a business research platform that aggregates 600+ databases from 60+ data vendors, incorporating over 550 terabytes of data. It offers data access, research applications, linking tools, classroom teaching resources, analytics tools and data validation.
The Worldwide Protein Data Bank (wwPDB) is the organization that manages the Protein Data Bank archive, the single global repository of three-dimensional structural data for proteins, nucleic acids, and complex assemblies, which has operated since 1971. The wwPDB maintains the archive and provides resources including validation tools, deposition systems, data dictionaries, and policies for the structural biology community.
YogaDNS is a Windows DNS client that intercepts DNS requests at the system level and processes them through user-defined servers. It supports plain DNS, DoH, DoH3, DoT, DoQ, DNSCrypt and Anonymized DNS, with DNSSEC validation and rules based on hostname masks and network interfaces.
ZeroSSL is a certificate authority offering free 90-day SSL certificates and premium annual certificates. It supports automated issuance and renewal via ACME clients and a REST API, plus one-step validation, wildcard and multi-domain certificates, installation checks and SSL monitoring.
