Hi, I'm

Dearain.

Mastering three programming languages:C, VandCtrl

I build desktop apps, UI libraries and tools for coding agents. Mostly C#, sometimes Swift and TypeScript.

Polymerium✱Huskui.Avalonia✱TideBar✱pi-extensions✱Polymerium✱Huskui.Avalonia✱TideBar✱pi-extensions✱Polymerium✱Huskui.Avalonia✱TideBar✱pi-extensions✱

Selected work

Things I made, and keep making.

Polymerium

121

A Minecraft instance manager built on a simple idea.

An instance is a description, not a pile of copied files. Change the loader, swap mods, update the whole pack: Polymerium rebuilds the files on demand while your saves and settings stay put.

Switch loaders without rebuilding: Forge to NeoForge, Fabric to Quilt.
Snapshots with a diff of exactly what changed. One click to roll back.
Files are linked, not duplicated. Ten packs sharing mods cost one copy.
CurseForge and Modrinth built in, plus a CLI with an MCP mode for AI agents.

C#
.NET 10
Avalonia
Windows · Linux · macOS

Visit site Source

Huskui gallery app showing cards, tags and info bars in the Huskui theme

Huskui.Avalonia

101

Controls, styles and themes for Avalonia.

A component library for cross-platform desktop apps, inspired by Park UI and built on the Radix Colors palette. It is also the UI foundation Polymerium is built on.

AppWindow, Card, InfoBar, Tag, Skeleton, Drawer and many more.
One overlay system for dialogs, modals, sidebars, toasts and growls.
Light and dark themes out of the box, one cohesive design language.
Optional packages for code highlighting, Markdown rendering and MVVM.

C#
Avalonia 12
XAML
NuGet

Visit site Source

TideBar

A zero-footprint macOS taskbar. A hairline that tides into an app bar.

The Dock takes permanent screen space and loses track of minimized windows. TideBar collapses to a 2–3 pt line when idle, expands when you approach, and keeps every window one click away.

Per-window state dots. Minimized windows restore with a click.
Hold an app to open its Surge: every window listed by title.
Full keyboard control with Option-Space and Option-Tab.
No Screen Recording permission, no account, no telemetry.

Swift
SwiftUI
macOS 14+

Visit site Source

              $ pi install npm:@d3ara1n/pi-hashline-edit$ pi install npm:@d3ara1n/pi-subagent$ pi install npm:@d3ara1n/pi-mesh$ pi install npm:@d3ara1n/pi-command-palette# 20+ packages, install only what you need

pi-extensions

Quality-of-life extensions for the Pi coding agent.

A monorepo of 20+ small packages that make Pi nicer to live in: safer edits, subagents, a command palette, agents that talk to each other. Each one installs on its own.

hashline-edit and apply-patch: line edits verified by content hash.
subagent: role-based delegation in the foreground or background.
mesh, peek and chat-room: Pi instances that find and message each other.
command-palette, editor-shell and ask-user: a calmer terminal UI.

TypeScript
npm
Pi Coding Agent

View on GitHub

Say hi

Questions, ideas, bug reports or just hello. My inbox is open.

d3ara1n@outlook.com d3ara1n