InterWorx is a US-developed commercial server control panel offering the NodeWorx admin and SiteWorx user interfaces, with PHP 5.6 to 8.2 support, Nginx/Apache dual engines and free Let's Encrypt SSL. Lightweight and high-performance, it suits cost-conscious small hosters.

Strengths and Features

✅ NodeWorx admin and SiteWorx user panels are separated, so 1 license manages multiple servers with a clear permission model
✅ Supports PHP 5.6 to 8.2 with PHP-FPM, plus Nginx/Apache dual engines to optimize dynamic site performance
✅ Built-in Let's Encrypt integration issues free SSL with 90-day auto-renewal for one-click HTTPS
✅ Per-site CPU, memory and bandwidth quotas let 1 server host many customer sites with solid resource isolation
✅ Built-in REST API with WHMCS integration, Git deployment and Node.js hosting covering building, billing and automation with 1 unified API
⚠️ Licensing is per server (about $10-$15/month each), costing small single-server hosters more than open-source panels and lacking volume discounts at scale
⚠️ Market share and community are limited, with far fewer third-party tutorials, themes and plugins than cPanel/Plesk, raising hiring and troubleshooting costs
⚠️ UI and docs are mainly in English with scarce Chinese resources, limiting localization
⚠️ Feature depth and third-party integration (app marketplaces, deep security suites) trail cPanel/Plesk, so complex needs require custom extension

Product Information

Category Cloud Server

Tags DNS Management Free SSL Email Management Website Management Hosting Panel Virtual Hosting Cluster Management Server Control Panel InterWorx NodeWorx SiteWorx Multi-version PHP

Company interworx

Service Region United States

Official Website https://www.interworx.com/

Recommendation Score 4 pts

Published 2026-08-09

Detailed Notes

Overview

InterWorx is a commercial cloud server control panel developed in the United States, maintained by the InterWorx team since 2000 and known for its dual-panel design of NodeWorx (server management) and SiteWorx (site user) interfaces. Built for Linux servers, it consolidates websites, mail, DNS, databases, clustering and automation behind a web interface with a "lightweight, high-performance, low-footprint" philosophy.

Compared with mainstream commercial panels such as cPanel and Plesk, InterWorx uses fewer resources, prices more affordably and supports clustering and a REST API, making it an alternative for cost-conscious small hosters building VPS hosting environments. Its market share and ecosystem trail the leading panels, so weigh team operations skills and ecosystem needs when choosing.

Key Strengths

Dual-panel architecture: NodeWorx targets admins and SiteWorx targets site users, with 1 license managing multiple servers and a clear permission model, see cloud server configuration guide.
Multi-version PHP and dual engines: Supports PHP 5.6 to 8.2 with PHP-FPM and switchable Nginx/Apache engines for better dynamic site performance, see LNMP stack setup.
One-click free SSL: Built-in Let's Encrypt issues certificates with 90-day auto-renewal, so HTTPS needs no manual setup, see Let's Encrypt SSL setup.
Quotas and resource isolation: SiteWorx sets CPU, memory and bandwidth quotas per site so 1 server can host many customer sites, suiting hoster multi-tenant scenarios.
Automation and integration: A built-in REST API with WHMCS integration, Git deployment and Node.js hosting covers building, billing and CI/CD automation.

Product Ecosystem

NodeWorx Server Management

The server management interface for admins and root users handles system-level configuration, user/domain management, cluster nodes and security settings, suited to centrally managing multiple servers.

SiteWorx Site Management

A lightweight panel for site users that manages website files, databases, mail, DNS and SSL with a clean interface and a lower learning curve than most commercial panels.

Clusters and Multi-Node

InterWorx Cluster lets you group multiple servers into one managed cluster; combined with quota isolation it reduces single points of failure and resource contention, see server selection guide for scaling.

Mail, DNS and Automation

A built-in mail stack and DNS management, plus Git deployment and Node.js application hosting; the REST API integrates with WHMCS billing and monitoring platforms, see business email service guide.

Limitations

Notable licensing cost: Per-server licensing (about $10-$15/month each) costs single-server hosters more than free open-source panels and lacks the volume discounts of leading panels, see server cost calculator.
Limited ecosystem and community: Market share is small, with far fewer third-party tutorials, themes and plugins than cPanel/Plesk, raising hiring and troubleshooting costs.
Weak localization: UI and docs are mainly in English with scarce Chinese resources, limiting Chinese user onboarding and support.
Limited feature depth: Advanced capabilities such as app marketplaces and deep security suites trail cPanel/Plesk, so complex needs require custom extension.

Use Cases

Small hosters / resellers (★★★★): Lightweight and low-footprint, batch-provision client sites on VPS with solid quota isolation.
Developers seeking high performance (★★★★): Multi-version PHP plus Nginx/Apache dual engines offer ample headroom for optimizing dynamic sites.
Teams needing automation and billing integration (★★★): REST API and WHMCS integration suit building an automated hosting platform.
Enterprises needing a rich ecosystem (★★): Third-party integration and community resources are limited; compare cPanel and Plesk.

Pricing

Item	Reference price	Description
Server license	About $10-$15/month per server	Commercial license, includes updates
Trial	Free trial period	Apply on the official site
Cluster	Billed per node	Unified multi-server management

Note: check the official site for current quotes, and see server cost calculator for cost assessment.

FAQ

How does InterWorx differ from cPanel? InterWorx is lighter, uses fewer resources and prices more affordably, while cPanel has a richer ecosystem and more third-party support. Choose by operations skills and ecosystem needs; compare cPanel and Plesk.
What are NodeWorx and SiteWorx? NodeWorx is the admin-facing server management interface for system-level configuration; SiteWorx is the lightweight user-facing panel for websites, mail, DNS and SSL, see server operation and maintenance tips.
Does InterWorx support multiple servers? Yes. Cluster mode groups multiple servers into one managed cluster, and quota isolation reduces single points of failure, see server selection guide for scaling.
Do I need Linux experience? Yes. InterWorx targets Linux servers and leans toward experienced admins; beginners should learn the basics first, see Linux server basics.
Can open-source panels (such as HestiaCP) replace it? Yes. Free open-source panels suit budget-limited users who accept community support; InterWorx wins on commercial support, clustering and automation. Compare HestiaCP and VestaCP.

Visit InterWorx Website →