I'm working on my own code editor with 'multiplayer', option to draw stuff, option to design algorithm schemes, option to browse SQLite databases and most importantly - I've based entire interface on HTML/CSS/JS and entire backend on C# and PHP, so it works both online (via browser) and offline (via program).

Tell me whatchu think, it's still work in progress.
(I've removed the name of it so when I share this project with my future employer, he doesn't connect the dots)