Four Signals
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

OneSaaS is positioned as “the OneSaaS app to rule them all,” designed specifically for solopreneurs and small businesses that spend much of their time operating in the browser. It enables you to describe what you want automated in natural language, then watches it get built step by step, with explicit approval required before anything is executed on your behalf. OneSaaS is built for the Mecha / Meta AI Developer Hackathon, with the core thesis that traditional SaaS software is “collapsing” under increasing complexity. Many small businesses lack the software engineering background needed to configure DAG-style (Directed Acyclic Graph) workflows or to manage multiple complex SaaS tools. To address this, OneSaaS aims to: - Enable DAG-style, automated workflows for non-engineers. - Operate as a companion desktop app with an integrated Chrome extension. - Automate repetitive, browser-based business tasks while keeping you in control. The desktop app is your SaaS app the Chrome Extension is your interface to your other applications used to run your business.