C language execution environment that runs in a browser

Super retro game!

筆算の手順を教えてくれる算数教材

Just a circuit simulator. You can make calculators, games, anything.

インストール不要・オフライン対応

開発者向けの様々な細かいツールを集めたwebサイトです。

It is a web application that allows you to learn system English vocabulary from a personal computer or smartphone.

You can set up a free Java and Bedrock Edition server. Supports mods and plugins, no ads, no player limit.

I created a website where you can type FORTRAN-style language into IBM 029 punch cards on your browser and run it! As you type, holes open one by one in the card, and when you submit the deck, the results are printed on an IBM 1403 line printer.

Let's create and run Python code with a Scratch-like feel!

シンプルで軽量な2次元CADです。

Interactive Magic Using Binary Number System

ブラウザの端末内でファイルを変換するサイト

FormatArc is a lightweight site that processes JSON formatting, YAML conversion, and CSV conversion only within the browser. Input data is not sent to the server, and formatting and conversion can be completed on the spot.

無料で遊べるブラウザゲーム集。基本プレイに登録は不要。

自分の実力に合わせてフラッシュ暗算が出来ますよ！

This is a web app where you can create your own personal vocabulary notebook just by pasting CSV files or text. You can easily register content by simply copying and pasting in the format "question,answer", and you can efficiently repeat learning on difficult problems.

Web制作の基礎からモダン開発技術まで、実務コードで鍛えるタイピングトレーニング。初めての方はトライアルコースから。慣れたらぜひランキングに挑戦してください。

Your imagination sets the world in motion.

It is an ultra-high-speed English-Japanese and Japanese-English dictionary.

Fly through the neon horizon.

MIDI Bug Tool / From DTM beginners to professionals, please utilize it for new ideas in music production.

This is a Reversi app that you can easily play in a web browser. You can play online matches with friends, and it also features a CPU battle mode where you can enjoy playing alone at your own pace.

個人開発で、作る・伸ばす・稼ぐをサポートするプラットフォーム