Side Projects

Built for the love of it.

Open-source tools and self-directed experiments. These are the builds where curiosity becomes reusable practice.

Explore projects View GitHub

Open source
Developer tooling
Learning in public

14 project stories

The work behind the logos.

Every project has a deeper story about the problem, the decisions, and the system behind the finished work.

Active

2026

PostLens

Built an iPhone-first private visual content studio for selecting strong photos, applying transparent on-device enhancements, composing layouts, and exporting social-ready work.

AstroTypeScriptiOS

View project

Active

2026

RoadScore

Built a bilingual, offline road-trip card game that turns one passenger-operated phone into a shared scoreboard, deck library, and private trip journal.

AstroTypeScriptReact Native

Active

2026

Lumen UI

Built a multi-framework design system with 123 accessible primitives for Astro, React, and Web Components, plus Figma, agent, MCP, and registry workflows.

React.jsAstroTypeScript

Active

2024

eslint-config-basic

Built a DX-first ESLint toolkit for JavaScript and TypeScript teams that want stronger defaults, less setup friction, and cleaner reviews.

React.jsNext.jsAstro

Active

2026

Astro Doctor

Built a deterministic Astro health-check toolkit with a CLI, ESLint plugin, editor extension, GitHub Action, docs site, and installable agent skills.

AstroTypeScriptNode.js

Active

2026

@santi020k/og

Built a renderer-agnostic Open Graph image pipeline with deterministic caching, safe cleanup, parallel generation, and CI verification while leaving every project's visual system in its own hands.

Next.jsAstroTypeScript

Active

2026

quality

Built a fast, predictable code-quality CLI and GitHub Action that detects and coordinates native analyzers across Rust, Swift, Android, Kotlin, JavaScript, and Astro repositories.

AstroTypeScriptNode.js

Active

2026

Between Contractions

Built a calm, privacy-first contraction timer for the web, iOS, Android, watches, widgets, and optional real-time partner coordination.

AstroTypeScriptTurborepo

Active

2026

Santi020k Theme

Built a theme family for VS Code, Zed, Codex, Chrome, terminals, Raycast, Slack, JetBrains, and Xcode, with shared tokens and a unified product website.

AstroNode.jsVitest

Active

2026

Dep Beacon

Built and published dependency tools for VS Code and Zed that bring npm dependency status, update targets, pnpm workspace catalog context, and OSV security signals into package manifests.

AstroTypeScriptNode.js

Active

2026

Coolstead

Built a native macOS menu-bar app that monitors thermal conditions and applies a gradual, safety-bounded fan curve without replacing macOS thermal protection.

TurborepoAppKitHardware Monitoring

Active

2026

Aaronmgz

Built a growing family web platform with a nautical personal site, public message board, baby-shower experience, admin tools, and a shared Cloudflare API.

React.jsNext.jsAstro

Completed

2023 - 2024

eslint-config-santi020k

Turned internal linting conventions into a reusable package that standardized React and TypeScript projects and paved the way for @santi020k/eslint-config-basic.

React.jsNext.jsAstro

Active

2026

santi020k auth

Built an open-source authentication policy for single-owner and multi-user Hono applications on Cloudflare Workers and D1, with email codes, passkeys, isolated identity state, and explicit production-readiness gates.

AstroTypeScriptPlaywright

Projects

Open-source tools and experiments that sharpen how I build and lead.

Technologies

137

Tools and platforms explored through personal and open-source work.

Experience

12+

Years of professional engineering experience.

Technology map