Why, even in peacetime, do friends become enemies? And why, even in wartime, do enemies become friends? This simulation attempts to use game theory to explain our epidemic of distrust – and how we can fix it!

A comprehensive guide for exploring and learning about the theory, science, and perception of color and contrast.

"Learn Git Branching" is the most visual and interactive way to learn Git on the web; you'll be challenged with exciting levels, given step-by-step demonstrations of powerful features, and maybe even have a bit of fun along the way.

Learn vim without enduring boring text only tutorials. vim.so gets you the muscle repetition needed to master vim quickly using interactive exercises. Vim adds code editing super powers to your editor of choice. Learn vim fast today!

Zoom Earth is an interactive weather map of the world and a real-time hurricane tracker. View live satellite images of the latest storms and wildfires. Explore weather forecast maps of wind, rain, temperature, pressure and more for your location.

Use our collaborative editor to create motion graphics that respond to different states and user inputs. Then load your animations into apps, games, and websites with our open-source runtimes.

Online web tool for calculating the centroid of triangle and polygon. You can also calculate the centroid of multiple points easily by entering multiple points. The input in taken in x and y coordinates of cartesian system. Calculate with just one click.

Decipad is an interactive notebook to explore data, create models and share insights. Combine text, numbers, and calculations to bring ideas to life in a narrative format, that anyone can read and understand.

VHS is a tool for generating terminal GIFs. VHS lets you write code and generate terminal GIFs from it for easy updating and version control. It's great for READMEs, integration tests, and really whatever you want!

Internxt Send is an encrypted file-sharing service that allows you to securely share files with anyone online. Anonymously send large files to anyone for free. Internxt Send is a product of privacy company Internxt.

Download any logo in LogoToUse and do whatever you want with them. This is the place to showcase more than 120+ million unbranded worldwide archived logos.

It is a chat bot that enables users to interact with PDF documents in a more efficient and fun manner. It uses cutting-edge AI technology to help users read through and extract valuable insights from their PDFs. It is multilingual, requires no sign-up and free

An open source app that simplifies the process of generating professional Invoices and Receipts for your business needs. Simply fill a form, select a template and generate your document!

Artificial Intelligence (AI) is trained using human-created content. If humans stop producing new content and rely solely on AI, online content across the world may run the risk of becoming repetitive and stagnant. Add the badge to your work, with pride.

This harm reduction tool helps to detect dangerous and lethal interactions in substance combinations.

Rooms lets you create games + interactive experiences from your browser. No download necessary. Every thing you see is editable and scriptable. And best of all, it’s free :-).

Share large files up to 30GB for Free, with resumable upload for logged in users.

Generative AI is coming to user interface design! Galileo AI generates stunning UI designs with just a text prompt, empowering you to design beyond imagination at lightning speed.

CryptoZombies is an interactive code school that teaches you to write smart contracts in Solidity through building your own crypto-collectables game. The course is beginners friendly and is available for free (no strings attached!).

Billdu is an invoicing app with the modern freelancer in mind. It allows you to create professional-looking invoices, estimates, and other documents in seconds – whenever and wherever. Track invoices, send automatic payment reminders, and get paid faster.