DevHelper is a free desktop app for developers. Its headline feature is Sketchly — an AI-assisted wireframing workflow that takes you from "I have an idea" to a clickable prototype, a Codex-ready project plan, and a downloadable starter repo, all in one session.
How it works: sketch mobile or website screens by hand or by AI prompt → refine in multi-turn chat ("make the buttons green", "add a forgot-password screen") → wire navigation between screens → click through a live prototype → generate a project plan (overview, data model, screens & flows, API surface, user stories, build sequence, Mermaid diagrams) → click Code it and OpenAI Codex emits a starter repo you can open in any IDE.
What else is in the box:
Chartly — Mermaid flowchart and diagram builder
Devily — dev-news reader (Hacker News, dev.to, Reddit, etc.)
AI-usage trays for Claude and ChatGPT (live token-spend awareness)
A programmable tray launcher
An extension marketplace with curated
window.appAPIfor desktop integration
Pricing: DevHelper is fully free — every feature, every export, every limit raised. No Lite/Pro tiers, no subscriptions, no ads. Sketchly AI is also free for every signed-in user; tokens are funded by community donations through Buy Me a Coffee. Failed runs don't consume credits.
Stack: Electron + React + TypeScript. Supabase for auth and sync. Local-first — data lives on your machine; sync is opt-in.
