Harp Nextcloud May 2026

For most users, especially those using Nextcloud All-in-One (AIO), HaRP is being integrated as the default option.

It communicates with the Docker Engine to create, start, and stop ExApp containers.

(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? harp nextcloud

HaRP makes it significantly easier to run ExApps on a different physical server than the main Nextcloud instance.

By using a shared key and dedicated certificates, HaRP provides a more robust security model for managing external microservices. How to Install and Configure HaRP For most users, especially those using Nextcloud All-in-One

HaRP is a specialized reverse proxy system designed to sit between your main web server (like Nginx or Apache) and individual External Apps. While traditional Nextcloud apps are written in PHP and run within the core server process, are standalone microservices—often written in Python, Rust, or Go—that run in their own Docker containers. HaRP serves two primary functions:

Unlike the legacy proxy, HaRP enables full end-to-end WebSocket communication, allowing ExApps to feature real-time collaborative editing and live dashboards. By using a shared key and dedicated certificates,

WebSockets in Nextcloud: creating real‑time apps via AppAPI