Desktop, phone and web apps, built local-first.
The monorepo behind Twin, Glow, Datum Bench, Mint, Vitals and 20+ more apps by Juwen Lie.

Try it live · See it in action · Highlights · More by juw12

Real apps, every platform Desktop installers, Android and iPhone builds and web versions for most apps.

Local-first No account and no server required for most apps, and they keep working offline.

Tested and shipped Hermetic test suites, CI and versioned releases.

See it in action

_{Open the interactive demo at juw12.github.io/projects/}

About

A monorepo for product projects, each promoted from prototype to a real, runnable, deployable project.

Project	What it is	Stack
apps/orbis	Communication, identity, protection — and hiring (Orbis Work) — in one app, plus Orbis Chat: real-time multi-user messaging with accounts, teams, email invites and push notifications on web, iPhone and Android	Zero-dependency Python stdlib server + SQLite + static PWA
apps/guangyao	光耀同行 — unofficial learning/community concept with local course progression, activities, rewards and transparent-giving demonstrations	Responsive installable PWA; real backend integrations remain pending
apps/peers	Verified reviews across category modes (food, travel, market, AI tools, health, finance, …) — every category shares one interface	Single-file web app + optional stdlib persistence backend
apps/house-of-articles	Athlete-moment sneaker news + live market feed	Static prototype + versioned data spine
apps/hazel	Hazel — one creator studio, three apps: Hazel Shorts (formerly Shortcraft: faceless 9:16 explainers, captions, generated music, MP4 export EN/ID, channel kit, YouTube upload + opt-in autoposter), Hazel Sped (formerly Sped/Hookline: sped-up/slowed/mashup edits, 9:16 editor, offline MP4 export) and Hazel Long (the original Hazel: long-form create, cut, repurpose, publish; Windows desktop auto-cut)	Static web apps (Canvas + Web Audio + MediaRecorder, offline PWA) + Electron/ffmpeg/Whisper desktop app + optional Python pipeline
apps/sweep	The /sweep pipeline — validate, then sync the repo to GitHub and mirror a note to Obsidian	PowerShell helper + OpenCode slash command
apps/twin	Invest and day-trade with a twin that replays 10,000 futures — TwinAgent research team, personality test, paper trading, goal planner, copy a 13F, news	Zero-dependency Python stdlib server + installable PWA (offline web demo)
apps/sync	Sync: listen to music together in real time from anywhere, with Spotify, Apple Music, YouTube and shared files in one room, plus voice chat that lowers the music	Static PWA, peer-to-peer WebRTC (PeerJS), no server
apps/me-rd-toolkit	Datum Bench — the free mechanical-R&D workbench (NPI flow, review checklists, issue log, engineering calculators, optional LAN file vault). Flagship app: Datum CAD — a PRD + 6 photos → a validated STEP solid	Static offline PWA + optional zero-dependency Python stdlib vault server
apps/plm-aml-approval	PLM AML final / conditional approval submission assistant — fills the Windchill approval workflow form and stops before Submit (v0.1 preliminary)	Python + Playwright driving Microsoft Edge; site settings in a local, git-ignored config
apps/vitals	Vitals: device health copilot — desktop apps for Windows, Mac and Linux plus Android and iPhone apps that check the phone itself; safety-graded cleaning with a 72 h Undo Vault and measured receipts, goal planner, battery wear forecast, drain detective, personal baseline and a fix-it chat	Zero-dependency Python stdlib agent + offline PWA, PyInstaller desktop apps, Capacitor phone apps with a native phone-check plugin
apps/signals	Signals — free, $0-capital crypto signal bot. RSI(14) + MACD(12/26/9) + ATR(14) + 50-EMA confluence alerts to Telegram, paper-trades every signal against a CSV ledger, ships with backtester + cross-window robustness sweep + grid parameter tuner and an opt-in Binance executor with hard risk caps. Standalone repo: juw12/signals	Python 3 stdlib + requests; one dep total
apps/vale	VALE — a 3D interactive fairy world (Unity 6 + HDRP); first-person explorer that collects five Lumenshards to restore a fading fairy realm, with dialogue, quests, and procedural forest	Unity 6 LTS + HDRP 17.2 + New Input System + Cinemachine 3 (C# / UGUI)
games/hearthwood	Hearthwood — a medieval low-poly village prototype: 3rd-person character controller, combat, inventory, dialogue, quests, collectibles, NPC AI, favor-token economy. Ships with a self-contained preview.html that demonstrates every system without the engine	Unity 6 LTS + URP 17.3 + New Input System + Cinemachine 3 + NavMesh + WebGL (C# / UGUI / TMP)
apps/pushlab	Push Lab (WIP) — send push notifications from your own server and prove they work on a real phone. Two built-in parts, started together and already linked: Beacon, the push server (Web Push, FCM, in-app, ntfy, Bark for iPhone, Gotify, Apprise; targeting, digests, escalation, Gatus uptime alerts, console, MCP, one-click Go live), and Tether, the device lab (Android phone in the browser with HD scrcpy screen, QA flows and Maestro YAML, AI steps incl. Google ARTEMIS, startup/jank/memory/CPU budgets, CI, MCP). Ships Claude Code / Codex agent skills	Zero-dependency Python stdlib + SQLite + adb; optional apprise, cloudflared, scrcpy-server
apps/crewcup	CrewCup — office coffee for teams in Indonesia and SEA: one-tap usual, group coffee runs with held payments, company allowance, badge-QR pickup at partner cafés, café order board, HR budgets and audit log, company rewards, loyalty (points, tiers, coupons, achievements) and the CrewCup Network. EN / ID	Zero-dependency Python stdlib server + SQLite + installable PWA

Archive

Past projects and experiments. Kept for reference, not actively developed.

Project	What it is	Status
saltbridge	Saltbridge � bilingual EN/?? freelance services for SaaS, e-commerce, and DTC brands. Translation, English product descriptions for Chinese sellers (Amazon/Etsy/Shopify), bilingual EN/?? email copy. Full launch package built: 3 Fiverr gigs, Upwork profile, 3 portfolio samples, cold-outreach system, day-by-day action plan, competitive analysis, 3 gig images, and a deployable portfolio site. $0 capital, 1�2 hr/day. Tagline: Preserving value across languages.	NEW
saas-content-engine	Freelance SaaS content writing toolkit — Fiverr/Upwork profiles, 3 portfolio samples, 50-company target list, 10 cold email templates, 4 ready-to-send personalized emails, lead tracker template, 30-day plan, daily action coach, building notes	NEW
respark	Respark — customer reactivation SaaS for local service businesses (dentists, plumbers, salons, trainers, mechanics, realtors, restaurants). Operator-led sales motion: $497 setup + $97/mo recurring. Built-in cold-outreach pipeline (/outreach) imports a CSV, auto-sends a 3-step sequence, tracks opens via pixel, and creates client accounts + draft campaigns automatically when a deal closes. Clients sign up, upload their customer list, and the system sends a 5-message reactivation campaign over 30 days. Stripe handles checkout + subscriptions. Zero-dependency Python stdlib + SQLite. 43 tests passing. start-with-tunnel.ps1 to launch on laptop; render.yaml for one-click Render deploy.	Ready to deploy — pending Stripe + SMTP keys (∜15 min human setup)
agency-starter	Handoff — AI automation agency + SaaS product for SMBs worldwide. Five Next.js apps (portfolio, saas landing with Lemon Squeezy checkout, AI review-responder, AI listing-writer, fake-door niche validator). Cold-outreach copy, 5 globally-scored niches, 14-day validation playbook. All code complete and pushed to juw12/loop-zero. $29/mo Pro, $99/mo Team.	Launched — pending Vercel + Lemon Squeezy + LLM keys (∜15 min human setup)

Ownership and content

Maintained by Juwen Lie (@juw12). Existing commit authorship is preserved.

Guang Yao's published lessons, materials and events are stored in content/guangyao, inside this repository. The admin console publishes to that folder; there is no separate content repository to maintain.

Content-admin permissions are repository-wide: only trusted maintainers should receive write access to juw12/projects. GitHub does not restrict a collaborator to a single folder.

Each project follows the same shape:

apps/<name>/
  web/        static front-end (this is what gets deployed to GitHub Pages)
  server/     optional zero-dependency Python backend (stdlib only)
  tests/      hermetic, stdlib-only end-to-end tests
  docs/       product specs and guides
  README.md

Design principles

• No third-party dependencies. Backends run on the Python 3 standard library only (http.server, sqlite3, json) — nothing to pip install, no build step.
• Offline-first, server-optional. Every front-end works with no backend (local storage or inline data) and upgrades to a real API when one is running. That is what makes static GitHub Pages hosting viable.
• Static-first deploys. The Pages workflow ships the front-ends as static sites; backends run locally or on your own host.

Run a project locally

python apps/orbis/server/server.py
python apps/peers/server/server.py
python apps/house-of-articles/server/server.py
python apps/twin/server.py --lan

Each server serves both its API and its web/ front-end.

Tests

python apps/orbis/tests/verify_api.py
python apps/peers/tests/verify_api.py
python apps/house-of-articles/tests/verify_api.py
python apps/twin/tests/verify_api.py

All tests are hermetic (temp database, free port) and exit 0 / 1. You can also run every test at once:

python scripts/run_all_tests.py

Live site

.github/workflows/pages.yml builds a static site from the apps' web/ directories (scripts/build_site.py) and deploys it with GitHub Pages. A scripts/check_site.py validator blocks the two failures that pass locally but break on Pages: absolute paths and filename case mismatches.

License

Released under the MIT License © 2026 Juwen Lie. Contributions are welcome under the same license; see the contributing guide and Code of Conduct.