AppAPI handles the entire lifecycle and integration, while HaRP manages the networking and routing.
In the evolving landscape of self-hosted microservices, (High-performance AppAPI Reverse Proxy) represents a fundamental shift in how Nextcloud interacts with external applications. Introduced for Nextcloud 32+ , HaRP replaces the legacy Docker Socket Proxy (DSP) system, offering a more robust, scalable way to integrate specialized tools—like AI assistants or real-time collaboration editors—directly into your Hub . The Core Philosophy of HaRP
Horizontal scaling allows businesses to use commodity hardware or budget-friendly cloud instances rather than expensive, high-end servers.
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April 19, 2026
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firewall-cmd --permanent --zone=public --add-port=8780/tcp firewall-cmd --permanent --zone=public --add-port=8782/tcp firewall-cmd --reload AppAPI handles the entire lifecycle and integration, while
Introduced as the standard architecture for modern deployments, . By integrating Fast Reverse Proxy (FRP) tunneling and an enterprise-grade HAProxy base, it natively addresses these limitations. Core Technical Architecture of HaRP
After registration, the connection should appear correctly in the Nextcloud UI, and you'll be able to install and manage ExApps.
Instead of forcing traffic through the core PHP server code, client traffic heading to an external app bypasses Nextcloud entirely. The Core Philosophy of HaRP Horizontal scaling allows
Nextcloud has evolved far beyond a simple file sync and share platform. Today, it's a powerful collaboration hub powered by a rich ecosystem of external apps (ExApps) that extend its functionality into AI, real-time communication, and complex workflows. Central to this evolution is the AppAPI, a framework that allows developers to build these ExApps as independent microservices.
: The core listening port used by remote or local ExApp container clients ( frpc ) to establish secure reverse tunnels. Step-by-Step Deployment Configurations
This is the headline feature. HaRP's support for WebSockets unlocks a new class of applications for Nextcloud. It allows the server to push updates to the browser instantly, without the client having to constantly ask for new data. This is the foundation of real-time collaboration.