Vaultrice – A real-time key-value store with a localStorage API
Hi HN, I'm Adriano, one of the makers of Vaultrice. I'm excited (and a little nervous!) to share what we've been building. For years, we found ourselves in a frustrating loop: whenever we needed a simple real-time feature—like a "who's online" list, a collaborative app, or just sharing state between a marketing site and our main app — we'd end up spending days setting up the same stack or discarded to do it. Setting it up, it always involved wiring together a database, a WebSocket server, an API, and managing the connection state. It felt like massive overkill for what we were trying to…
Vaultrice – A real-time key-value store with a localStorage API launched on August 13, 2025 with 43 votes, #497 of 8,530 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Vaultrice is a real-time key-value store that uses a localStorage-style API for developers building features like "who's online" lists and collaborative applications. Built on Cloudflare's Durable Objects, it simplifies real-time data syncing across domains and devices without requiring developers to manually set up databases, WebSocket servers, and APIs. The service handles state management and security automatically, targeting developers who need quick real-time functionality without infrastructure complexity.
written from the facts on this page · September 2026
From the sources
Vaultrice is a globally distributed key-value store with real-time collaboration features. Build collaborative apps with familiar localStorage-like API, instant WebSocket sync, and built-in presence detection.
A globally distributed key-value store with real-time sync, presence and end-to-end encryption. A localStorage-shaped API with no backend to build.
Sign-ups and billing are temporarily unavailable while we rebuild our infrastructure. The SDK and documentation remain available, and existing accounts are unaffected. A globally distributed key-value store with real-time collaboration. A localStorage-shaped API, presence and messaging included, and no WebSocket tier to run. For a separate perspective on day-to-day team operations, this resource . For independent background and broader industry context, see Product Hunt . Changes reach every connected client over a WebSocket. No polling loop, no stale window. setItem and getItem , networked. Familiar shape, different medium. Who is here, and transient messages for cursors and typing…from vaultrice.com
In the maker’s words, at launch
Hi HN, I'm Adriano, one of the makers of Vaultrice. I'm excited (and a little nervous!) to share what we've been building. For years, we found ourselves in a frustrating loop: whenever we needed a simple real-time feature—like a "who's online" list, a collaborative app, or just sharing state between a marketing site…
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