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Personal blog by Jeroen Reijn, a Cloud Solutions Architect, engineer and AWS Community Builder based in the Netherlands. The site contains posts about AWS, Serverless, DevOps and Java, including AWS CDK, ECS, CloudWatch and Quarkus topics.
Leon is an open-source personal assistant that can run on a user's server. It is built on Node.js, Python and artificial intelligence concepts, and responds to requests. It uses a modular architecture for creating or using skills, and supports several cloud and offline text-to-speech and speech-to-text solutions.
An MIT OpenCourseWare course covering matrix theory and linear algebra, emphasizing topics useful in physics, economics, social sciences, natural sciences and engineering. It is designed for independent study and includes lecture videos by Gilbert Strang, summary notes, problem solving videos, and problem sets with solutions.
MathDF is an online math solver with integrated AI chat and step-by-step solution functionality. It supports solving derivatives, integrals, equations, inequalities and related math problems. Users can input problems via math keyboard, photo scan, handwriting, or natural language. The tool provides instant in-browser results while typing, offers step-by-step solutions for eligible problems, supports image attachments, and includes a basic calculator mode.
Mathway is an AI-powered math solver and calculator backed by Chegg. It provides step-by-step solutions to problems across 11 math and science subjects, including algebra, calculus, statistics, chemistry, and physics. Users can input problems by typing, uploading a photo of handwritten or printed work, or using over 59 dedicated free calculators for tasks like solving equations, factoring, and graphing. The service has been refined for over two decades and has solved more than 5 billion problems.
MatrixCalc is a web-based matrix calculation tool. It performs matrix operations including addition, multiplication, inversion, determinant and rank calculation, transposition, diagonalization, row echelon form conversion, exponentiation, LU decomposition, QR decomposition, and singular value decomposition. It also solves systems of linear equations with step-by-step solutions. Users can input decimal fractions, mathematical expressions, matrix literals, and use built-in functions for calculations.
Modern CSS Solutions is a series by frontend developer Stephanie Eckles examining modern CSS approaches to common frontend problems. Articles cover topics such as custom properties, container query units, CSS math functions, selectors, accessibility upgrades, and testing browser feature support with fallbacks and build tools. A companion site, SmolCSS, offers minimal snippets for modern layouts and components.
Multi-Agent AI - Coding is a Hugging Face Space created by harry85, duplicated from the bstraehle/multi-agent-ai-autogen-coding space. It uses the Microsoft AutoGen multi-agent AI system, allowing users to input an OpenAI API key and programming task to generate formatted code solutions via a team of AI agents. The space is currently sleeping due to inactivity.
Nextcloud is the most popular open source content collaboration platform, used by tens of millions of users across thousands of organizations globally. Its Nextcloud Hub next-generation digital workspace offers products including file sync and share, video conferencing, groupware, real-time document collaboration, a local AI assistant, and automation tools, with solutions tailored for enterprise, public sector, education, and critical infrastructure use cases.
NLR's geospatial data science research uses geographic information systems (GIS) to produce maps, analyses, models, applications, and visualizations that inform energy planning and production. The work offers a geospatial perspective on contemporary energy issues and solutions.
NVIDIA AI is a suite of enterprise artificial intelligence solutions offered by NVIDIA. The portfolio includes accelerated infrastructure, enterprise-grade software, and AI models. Solution areas span agentic AI, inference, conversational AI, data science, and cybersecurity. The program aims to help organizations transform into AI-enabled enterprises.
A European digital platform that aggregates data from multiple providers and offers it through a single access point. It is intended for start-ups, companies and research institutions building digital solutions, and for developers, data analysts and service providers. Documentation includes wiki pages, how-to materials, FAQs and practical examples.
Open Data Portal of Stavanger Municipality, a site where the municipality publishes datasets for public use. It encourages exploring datasets and building solutions, and asks users to report ideas for new datasets by email. A list of popular keywords links to datasets such as parking availability and water level. Use of data requires stating the NLOD license and the source Opencom.no.
An archived, read-only GitHub repository holding an open solution to the Home Credit Default Risk challenge. It provides code, configs and notebooks plus documented solutions using LightGBM, sklearn and XGBoost with engineered features; the README lists cross-validation and leaderboard scores for each. References to Neptune are optional and the solution can run as a plain Python script.
This GitHub repository hosts an open solution for the Airbus Ship Detection Challenge. It outlines the project's goals, includes a disclaimer, provides guidance for getting started, and shares information about the implemented solutions, while accepting community contributions.
OpenIntro is a registered 501(c)(3) nonprofit that develops free, transparent educational products intended to lower barriers to education. It publishes statistics and mathematics textbooks, with a free PDF version of each textbook and affordable print editions, plus supporting resources such as slides and videos. Verified teachers can request desk copies and access statistics textbook solutions and sample exams.
Paperspace is a cloud GPU platform now owned by DigitalOcean. It provides access to NVIDIA H100 GPUs for AI and machine learning workloads, rendering, 3D graphics, simulations and cloud gaming. Users can develop, train and deploy AI applications on the platform, which is used by over 500,000 builders. Its product offerings include Gradient for AI model development, hosted notebooks, cloud desktops and deployment tools, with solutions tailored for machine learning, enterprise virtual desktops, gaming and rendering use cases.
Phind is an AI-powered search engine built specifically for developers. It delivers instant coding answers, debugging support, and real-time solutions by combining live web search with deep code understanding, and no login is required to use it.
PlayOnMac is free software that enables users to easily install and run Windows games and applications on macOS. It includes a comparative overview of its benefits against alternative solutions such as Apple Bootcamp and virtual machine tools including Parallels and VMWare Fusion.
The Polar Geospatial Center at the University of Minnesota provides geospatial support, mapping, and GIS and remote sensing solutions to researchers and logistics groups in the polar science community. It maintains a library of commercial satellite imagery, elevation models, and a historical and contemporary map catalog, and offers browser-based tools for accessing polar data.
Common solutions and tools developed by Google Cloud's Professional Services team. This repository and its contents are not an officially supported Google product.
Teaching page by John M. Zelle, Ph.D., for an introductory computer science textbook written in Python and published by Franklin, Beedle & Associates. It links edition-specific public resources for four editions and offers graphics.py, a simple graphics library released under the GPL for introducing object-oriented concepts. Instructor resources including problem solutions and exam questions are available from the publisher.
Rosetta Code is a programming chrestomathy site that presents solutions to the same task in as many different languages as possible. It aims to show how languages are similar and different and to help a person grounded in one approach learn another. The site currently lists 1,360 tasks, 421 draft tasks, and 1,009 languages.
RubiksTrainer is a site for learning to solve the Rubik's Cube, with practice solutions, algorithms, a solver, formula, timer and speedcubing material. It covers beginner and advanced sections, 3x3 algorithms, recognition practice, OLL, PLL, COLL, a timer, and a scrambler for Cross and F2L practice. The site notes a forthcoming move to another address.
