Microsoft Visual Studio might be a bit more popular than card.io. We know about 1 link to it since March 2021 and only 1 link to card.io. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
First thing I tried was typed card.io in my web-browser to see whether it would bring me to a website associated with this game. Source: almost 2 years ago
While the editor seems to old fashioned there isn't anything particularly wrong in using it for learning. Alternatively you can propose to your teacher about https://visualstudio.microsoft.com/vs/express/ . IMO editor is not a big factor when we are talking about high school learning. Source: about 3 years ago
Shared Contacts For GMail - Share contacts and address books with your team in Google Workspace, previously known as G Suite, Gmail, or your mobile Contact app, just like you share Google docs!
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
ContactBook App - ContactBook helps your business organize and manage contacts centrally and keep them shared with the right people.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Speare - Speare is a word processor enabling users to brainstorm, organize, outline and develop content.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft