VS Code in the browser

Ruby lib for reading/writing/modifying .xlsx and .xlsm files

《算法竞赛进阶指南》资源社区

AI education materials for Chinese students, teachers and IT professionals.

The open source embeddable online markdown editor (component).

An online Dart editor with support for console, web, and Flutter apps.

Work Design 项目说明

Coding WebIDE Community Edition

一个用于算法竞赛的在线评测系统。An online judge system for algorithm competition.

Yet Another Universal Judge

Source codes for book <<<BeginningAlgorithmContests>> Second edition

80x23 terminal tetris!

NOIP, NOI, IOI

ACM在线测评系统评测程序设计与实现

WRSC boat tracking system with web dashboard

✎ 基于 Vue.js 2.0+ 石墨文档样式的富文本编辑器组件

A rich text editor for everyday writing

The online judge service with millions of submissions, since 2005.

📚 WebAssembly friendly programming with C/C++ -- Emscripten practice

Ruby middleware/client for breezy-pdf-lite, an HTML -> PDF service powered by Google Chrome

📫 Rails Engine to preview emails in the browser

Transform code into a flowchart and experimentally trace the execution path through it

Manage Procfile-based applications

Tabler is free and open-source HTML Dashboard UI Kit built on Bootstrap

🔐A Rails engine providing essential industry of Role-based access control.

Rails 5.0 starter app with Devise for authentication and Pundit for authorization.

render_async lets you include pages asynchronously with AJAX

XSS/CSRF safe JWT auth designed for SPA

A ruby version of the arcade learning environment interface.