HaRP (High-performance AppAPI Reverse Proxy) is the modern networking backbone for Nextcloud’s External Apps (ExApps) ecosystem. Introduced as the recommended deployment daemon starting with Nextcloud Hub 32, HaRP replaces the older Docker Socket Proxy (DSP) to provide better performance, easier remote deployments, and native support for real-time protocols like WebSockets. What is Nextcloud HaRP?
The Architecture of Trust
Nextcloud is built on PHP and a modular architecture, but its technical stack is less interesting than its philosophical stack. The platform is a "Fork"—a term derived from the open-source movement where developers take existing code and take it in a new direction. Nextcloud was forked from ownCloud in 2016 by Frank Karlitsch
The Harp was a suite of Nextcloud apps built on top of Nextcloud’s core:
HaRP acts as a dedicated gateway between users and Nextcloud's external microservice-based applications. Key features include: Direct Routing