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A tutorial website offering MySQL lessons covering basics, stored procedures, triggers, views and indexes, plus programming interfaces for PHP, Java, Python, Node.js and Perl. It includes a getting-started section intended to leave a local MySQL database with a sample database for practice.
The NASA/IPAC Extragalactic Database is a database of extragalactic sources drawn from the astronomical literature. Its September 2026 release highlights note ingestion of 221K sources, including 157K cross-matches with NED objects and 63K new objects, and describe suggested data publication practices for journal articles.
Supports teaching, studying or skills practice with AI-guided learning tools.
New York Medical College is a private health sciences university and a member of Touro University, located in Westchester County outside New York City. It comprises the School of Medicine, the School of Health Sciences and Practice, and the Graduate School of Biomedical Sciences. The college describes a humanistic, collaborative education with clinical training across the tri-state area.
OPARA is the research data repository for Saxon universities. Researchers can archive digital research data in line with good scientific practice for an initial period of ten years, or publish it, which assigns a DOI and makes it discoverable and accessible to everyone. Submissions go through a review process.
Open Data Manchester is a not-for-profit organisation that supports people, organisations and communities in using data effectively through advice, advocacy, events, research, support and training. Its mission is to promote responsible data practices that deliver benefits for people, the planet and prosperity, working locally in Greater Manchester, nationally and internationally.
OpenAI Cookbook is a GitHub repository that provides examples and guides for using the OpenAI API. The collection helps developers integrate OpenAI models into their applications. It includes code samples, best practices, and documentation. The project is open source and accepts community contributions.
OvertakeFans is a Formula 1 fan site presenting best moments of Formula 1. The page displays countdowns to United States Grand Prix 2026 Practice 1 and the United States Grand Prix 2026 Weekend Warm-Up, and invites visitors to a Discord server to discuss sessions live and get support.
OverTheWire is a community offering wargames intended to help people learn and practice security concepts through games. Its suggested order begins with Bandit for Unix/Linux basics, followed by a choice among Natas for web security, Krypton for cryptography or Leviathan for reverse engineering, then binary exploitation games. Each shell game uses its own SSH port.
PaddlePaddle is an open-source parallel distributed deep learning framework developed from industrial practice, designed for high-performance single-machine and distributed training, as well as cross-platform deployment of deep learning and machine learning models.
Supports teaching, studying or skills practice with AI-guided learning tools.
PassMedicine provides free UCAT revision with over 3,000 practice questions covering Verbal Reasoning, Quantitative Reasoning, Decision Making and Situational Judgement. The interface is designed to mirror the real exam, and users can compare their scores with others and discuss individual questions. A six-month subscription option is listed as free.
PHP: The Right Way is an easy-to-read, quick reference for PHP best practices, accepted coding standards, and links to authoritative PHP tutorials. It is a living document translated into many languages and also available in PDF, EPUB and MOBI formats. It recommends starting with the current stable version, PHP 8.5.
PianoCheetah is piano practice software that converts song notes to a maximum of ten keys, intended for playing with fingers rather than hand hopping. Notes are shown in a simplified notation aligned to the fingers, and the user sets tempo and note velocities while other tracks follow. The site states it is not a DAW.
The Plum Village App is a free mindfulness app offering guided meditations, deep relaxations, and other practices from Zen master Thich Nhat Hanh and his monastic community. It is available for Apple and Android smartphones, with a web version and Chrome and Firefox browser addons. The app has been downloaded by more than 500,000 people.
Supports teaching, studying or skills practice with AI-guided learning tools.
The Prompt Engineering Roadmap on roadmap.sh is a community-created step-by-step guide for learning prompt engineering in 2026. Roadmap.sh is an open-source platform that provides developer career roadmaps, learning resources, best practices, and projects, and is the 6th most starred project on GitHub with hundreds of thousands of monthly visitors.
pwn.college is an education platform where learners develop and practice core cybersecurity skills in a hands-on fashion. It is maintained by a team of hackers at Arizona State University and powers much of ASU's cybersecurity curriculum. The platform is open and free to participants worldwide.
Quickposes is a gesture drawing tool and image library for art students, illustrators and anyone wanting to improve drawing skills. Users select pose types and a time limit, then draw the essence of the pose before the image changes. Challenges are always 20 images each session, and a Random gestures mode exists for non-time-limit practice.
RadiologyEducation.com is a digital library of radiology education resources. It collects links to lectures, textbooks, teaching files, anatomy atlases, clinical practice guidelines and patient education, organized by subspecialty including breast, chest, emergency, musculoskeletal and pediatric radiology. It also lists mobile apps, ebooks and podcasts.
Readlang is a language-learning tool for reading texts in over 100 languages. Clicking a word or phrase shows a translation, and translated items can be saved and practiced with flashcards. It offers a free plan and paid Premium and Premium Plus plans.
RegexOne provides a set of interactive lessons and exercises to help you learn regular expressions. The lessons cover topics such as matching specific characters, character ranges, optional characters, whitespace and groups, and the site also includes practice problems and language guides.
Creates sample resumes and professional profiles using AI-generated examples for inspiration and practice.
A community-driven collection of roadmaps, articles and guides intended to help developers grow in their careers. It offers role-based and skill-based roadmaps, best practices and guides, covering topics such as frontend, backend, full stack, DevOps, data analysis and machine learning, and allows searching available roadmaps.
