ProductivityNotesLists

Prosys.

Prosys is a lean note-taking and list management app designed for people who think in structured lists. Built with Next.js and backed by Firebase, it uses Jotai for instant reactive updates — every keystroke syncs in real time with zero perceived latency.

All Products

Tech Stack

Next.jsTypeScriptFirebaseJotaiLucide React

Hosted At

prosys.ferrousapps.com

Problem

Most note apps are bloated with features that slow you down. People who think in lists need something fast, clean, and persistent — without the overhead of Notion or Obsidian.

Solution

Prosys keeps it minimal: notes and lists, synced to Firebase, managed with Jotai atoms for instant UI updates. No plugins, no databases to configure, just fast structured thinking.

Key Features

Notes and lists as first-class primitives

Real-time Firebase sync with zero latency feel

Jotai atom-based reactive state

Keyboard-first interaction model

Minimal, distraction-free UI

Persistent across devices via Firestore

Next.js server components for fast initial load

Mobile-friendly responsive layout

Case Study

Challenge

Power users who think in lists are underserved by bloated note apps — they need speed and structure without the complexity.

Approach

Built a stripped-down Next.js app with Jotai for optimistic UI and Firebase for persistence, keeping the surface area intentionally small.

Outcome

A fast, focused tool for structured thinkers that loads instantly and syncs reliably.