Cockpit vs Webmin vs Ajenti: Best Self-Hosted Server Management Web UI 2026

Managing Linux servers through SSH terminals works fine for a single machine. But once you are running five, ten, or fifty servers — or you manage servers for clients who refuse to use a command line — a web-based administration interface becomes essential.

The three leading open-source server management dashboards are Cockpit, Webmin, and Ajenti. Each offers a browser-based GUI for managing services, users, networking, storage, and more. But they differ significantly in architecture, extensibility, and target audience.

This guide compares all three side by side, covers installation and configuration, and helps you choose the right tool for your infrastructure.

Why Self-Host a Server Management Web UI

There are several reasons to run a web-based server management interface on your own hardware:

• Centralized control — manage multiple servers from any browser without memorizing SSH commands or carrying SSH keys on every device.
• Client and team access — give non-technical team members or clients limited access to specific server functions (restarting services, viewing logs) without granting full shell access.
• Visual system monitoring — real-time CPU, memory, disk, and network graphs are easier to interpret at a glance than parsing top or htop output.
• Faster troubleshooting — search logs, restart services, and check system status without navigating through multiple terminal sessions.
• Audit trail — some panels log actions taken through the UI, providing accountability that raw SSH sessions lack.

All three tools we compare are free, open-source, and self-hosted on your own servers. No SaaS dependencies, no telemetry, and no recurring subscriptions.

Overview: Cockpit vs Webmin vs Ajenti

Here is a high-level comparison of the three platforms based on live data from their official repositories:

Cockpit, developed by Red Hat contributors, has become the default server management interface on Fedora, RHEL, and CentOS systems. Webmin has been around since 1997 and supports the widest range of server software through its massive module ecosystem. Ajenti, written in Python, offers a modern, responsive UI with a focus on simplicity.

Cockpit: The Red Hat Ecosystem Dashboard

Cockpit is the newest of the three, first released in 2014. It is designed as a lightweight, composable web interface that integrates deeply with systemd, NetworkManager, and the Red Hat ecosystem. Its architecture uses a single cockpit-ws (web socket) process that communicates with system APIs directly — no database backend required.

Key Features

• Systemd integration — manage services, targets, sockets, timers, and journal logs through a clean UI.
• Storage management — configure LVM, RAID, Stratis, VDO, and NFS mounts visually.
• Networking — manage bonds, bridges, VLANs, and firewall rules via NetworkManager integration.
• Container support — built-in Podman integration for managing containers and images without leaving the dashboard.
• Multi-server management — add multiple servers to a single Cockpit instance and switch between them from the sidebar.
• Terminal — embedded web terminal for when you need to drop to a shell.

Installation

On Debian/Ubuntu:

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sudo apt update
sudo apt install cockpit -y
sudo systemctl enable --now cockpit.socket

On RHEL/Fedora/CentOS:

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sudo dnf install cockpit -y
sudo systemctl enable --now cockpit.socket

On Arch Linux:

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sudo pacman -S cockpit
sudo systemctl enable --now cockpit.socket

Once installed, Cockpit is accessible at https://your-server-ip:9090. It uses your system’s PAM authentication, so existing Linux credentials work out of the box.

Installing Useful Plugins

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# Install common Cockpit plugins on Debian/Ubuntu
sudo apt install cockpit-podman cockpit-storaged cockpit-networkmanager cockpit-packagekit -y

# On RHEL/Fedora
sudo dnf install cockpit-podman cockpit-storaged cockpit-networkmanager -y

# Community plugins (requires EPEL on RHEL-based systems)
sudo dnf install cockpit-file-sharing cockpit-selinux -y

Configuration

Cockpit’s main configuration file is /etc/cockpit/cockpit.conf. Here is a typical setup to enable TLS and restrict access:

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[WebService]
AllowUnencrypted = false
Login = true

[Session]
IdleTimeout = 900

[Log]
Fatal = critical

To restrict Cockpit to specific networks, use a firewall rule:

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# Allow Cockpit only from your management network
sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="10.0.0.0/24" port port="9090" protocol="tcp" accept'
sudo firewall-cmd --reload

Webmin: The Veteran Control Panel

Webmin has been the most widely used open-source server administration panel since its initial release in 1997. Written in Perl, it provides an exhaustive web interface for virtually every aspect of a Linux or Unix system. With over 1,000 available modules, it can manage DNS servers, mail servers, databases, web servers, firewalls, and much more.

Key Features

• Comprehensive module ecosystem — manage Apache, Nginx, Postfix, BIND, MySQL, PostgreSQL, and dozens of other services through dedicated modules.
• User and group management — full user administration with quota management and SSH key handling.
• File manager — browser-based file browser with upload, download, edit, and permission management.
• Cron job editor — visual cron job scheduler that eliminates the need to memorize cron syntax.
• Webmin Cluster — manage multiple servers from a single interface with parallel command execution.
• Virtualmin integration — Virtualmin extends Webmin with hosting-specific features like domain management, email accounts, and database provisioning.
• Backup and restore — built-in system and Webmin configuration backup tools.

Installation

On Debian/Ubuntu (using the official repository):

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# Add Webmin repository
echo "deb https://download.webmin.com/download/repository sarge contrib" | sudo tee /etc/apt/sources.list.d/webmin.list
wget -qO - https://download.webmin.com/jcameron-key.asc | sudo apt-key add -
sudo apt update
sudo apt install webmin -y

On RHEL/CentOS/Fedora:

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# Add Webmin repository
cat <<EOF | sudo tee /etc/yum.repos.d/webmin.repo
[Webmin]
name=Webmin Distribution Neutral
baseurl=https://download.webmin.com/download/yum
enabled=1
gpgcheck=1
gpgkey=https://download.webmin.com/jcameron-key.asc
EOF
sudo dnf install webmin -y

Via standalone .deb/.rpm package:

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wget https://download.webmin.com/download/webmin_2.630_all.deb
sudo apt install ./webmin_2.630_all.deb -y

Webmin is accessible at https://your-server-ip:10000. The first login uses your root credentials.

Configuration

Edit /etc/webmin/miniserv.conf to change the listening port or enable SSL:

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port=10000
ssl=1
ssl_redirect=1
realm=Webmin Server
log=1
blockhost_failures=5
blockhost_time=60

To enforce two-factor authentication, navigate to Webmin > Webmin Configuration > Authentication in the UI and enable TOTP.

Installing Modules

Webmin modules can be installed directly from the UI (Webmin > Webmin Modules > Install from standard module) or from the command line:

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# Install a module from the Webmin repository
sudo /usr/share/webmin/install-module.pl http://download.webmin.com/download/modules/bind8-2.205.wbm.gz

# Or install from a local .wbm file
sudo /usr/share/webmin/install-module.pl /path/to/module.wbm

Ajenti: The Lightweight Python Panel

Ajenti takes a different approach from Cockpit and Webmin. Written in Python with a modern responsive UI, it focuses on being lightweight, fast, and easy to customize. Its plugin architecture allows you to install only the components you need, keeping the footprint small.

Key Features

• Python-based architecture — easy to extend and customize with Python plugins.
• Modern responsive UI — works well on mobile devices and tablets for on-the-go administration.
• Plugin system — modular design with plugins for file manager, terminal, services, packages, and more.
• Docker integration — the ajenti.plugin.docker plugin provides container management.
• Low resource usage — lighter than Webmin, suitable for resource-constrained servers.
• Website management — built-in website configuration for Nginx and PHP-FPM (ideal for web hosting).

Installation

On Ubuntu/Debian (using the official installer script):

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# Install dependencies
sudo apt update
sudo apt install python3-pip python3-dev python3-venv build-essential libssl-dev libffi-dev -y

# Install Ajenti via pip
sudo pip3 install ajenti-panel ajenti.plugin.ace ajenti.plugin.terminal \
    ajenti.plugin.services ajenti.plugin.filemanager \
    ajenti.plugin.dashboard ajenti.plugin.settings

# Or use the automated installer
curl -O https://raw.githubusercontent.com/Ajenti/Ajenti/master/scripts/install.sh
chmod +x install.sh
sudo ./install.sh

Start Ajenti:

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sudo systemctl enable --now ajenti

Ajenti is accessible at https://your-server-ip:8000. Default credentials are admin / admin — change these immediately after first login.

Configuration

Ajenti’s configuration is stored in /etc/ajenti/config.yml:

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authentication: true
bind:
  host: 0.0.0.0
  port: 8000
max_upload_size: 100
session_max_time: 3600
ssl:
  enable: true
  certificate: /etc/ajenti/ajenti.pem

To generate a self-signed SSL certificate for Ajenti:

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sudo openssl req -x509 -nodes -days 3650 -newkey rsa:2048 \
    -keyout /etc/ajenti/ajenti.pem \
    -out /etc/ajenti/ajenti.pem
sudo chown root:root /etc/ajenti/ajenti.pem
sudo chmod 600 /etc/ajenti/ajenti.pem
sudo systemctl restart ajenti

Installing Plugins

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# List available plugins
pip3 search ajenti.plugin 2>/dev/null || pip3 install ajenti.plugin.docker

# Install Docker management plugin
sudo pip3 install ajenti.plugin.docker

# Install website management plugin
sudo pip3 install ajenti.plugin.webserver_common ajenti.plugin.nginx

Detailed Feature Comparison

Beyond the high-level overview, here is a deeper look at how the three tools compare on specific operational tasks:

Security Considerations

Running a web-based administration panel exposes a new attack surface on your server. Here are best practices for all three tools:

1. Always Use HTTPS

All three panels support TLS. Never expose them over plain HTTP, especially on internet-facing servers.

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# For Cockpit: TLS is enabled by default with self-signed certs
# For custom certs:
sudo mkdir -p /etc/cockpit/ws-certs.d
sudo cp your-cert.pem your-key.pem /etc/cockpit/ws-certs.d/
sudo systemctl restart cockpit

2. Restrict Network Access

Use firewall rules to limit panel access to your management network or specific IP addresses:

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# Cockpit (firewalld)
sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="192.168.1.0/24" port port="9090" protocol="tcp" accept'

# Webmin (iptables)
sudo iptables -A INPUT -p tcp -s 192.168.1.0/24 --dport 10000 -j ACCEPT

# Ajenti (ufw)
sudo ufw allow from 192.168.1.0/24 to any port 8000

3. Enable Two-Factor Authentication

Webmin supports TOTP natively. For Cockpit, configure PAM-based 2FA using libpam-google-authenticator. For Ajenti, place it behind an authentication reverse proxy like Authelia.

4. Keep Software Updated

All three projects are actively maintained (last updated in April 2026). Subscribe to their security mailing lists and apply patches promptly.

For additional server hardening, see our guide on intrusion prevention with Fail2ban vs SSHGuard vs CrowdSec, which provides complementary protection for the SSH ports these panels don’t fully replace.

Which Should You Choose?

Choose Cockpit if:

• You run RHEL, Fedora, or CentOS systems (it is the default admin interface).
• You need multi-server management out of the box.
• You use Podman for containers and want integrated management.
• You prefer a clean, modern interface focused on system-level tasks.
• You want deep systemd integration with journal log browsing.

Choose Webmin if:

• You manage diverse server software (Apache, Postfix, BIND, MySQL, etc.).
• You need a full hosting control panel (pair it with Virtualmin).
• You require granular control over every system aspect.
• You manage servers for clients who need comprehensive web-based administration.
• You want the largest ecosystem of available modules and plugins.

Choose Ajenti if:

• You need a lightweight, mobile-friendly admin panel.
• You manage web servers with Nginx and PHP-FPM and want quick website provisioning.
• You prefer Python-based tools for customization.
• Your servers have limited resources (RAM, CPU).
• You want a modern UI without the complexity of Webmin’s module sprawl.

Related Reading

For a complete server administration stack, consider combining your chosen management panel with these self-hosted tools:

• Our reverse proxy comparison (Nginx Proxy Manager vs SWAG vs Caddy) shows how to add a web GUI for managing HTTPS certificates and proxy rules — complementary to any of the three panels covered here.
• For terminal-based system monitoring alongside your web dashboard, check our terminal dashboard guide (btop vs Glances vs Bottom).
• Pair your server management UI with UFW vs Firewalld vs Iptables to ensure your firewall rules are properly configured from both the command line and the web interface.

FAQ

Can I run Cockpit, Webmin, and Ajenti on the same server?

Yes, technically you can install all three on a single server since they use different default ports (Cockpit: 9090, Webmin: 10000, Ajenti: 8000). However, this is not recommended — each panel provides overlapping functionality (service management, user administration, file browsing), and running multiple panels increases your attack surface and resource consumption. Pick the one that best fits your needs.

Is Cockpit secure enough for internet-facing servers?

Cockpit uses TLS by default with self-signed certificates and authenticates against your system’s PAM configuration. For internet-facing servers, you should: (1) replace the self-signed certificate with a Let’s Encrypt certificate, (2) restrict access via firewall rules to known IP ranges, (3) enable PAM-based two-factor authentication, and (4) consider placing Cockpit behind a reverse proxy with additional authentication. Cockpit does not expose a root shell by default — it authenticates as the user who logs in.

Does Webmin support two-factor authentication?

Yes. Webmin has built-in support for TOTP (time-based one-time passwords) compatible with Google Authenticator, Authy, and similar apps. Navigate to Webmin > Webmin Configuration > Authentication in the UI, select “Two-factor authentication,” and follow the setup wizard. You can also configure IP-based access control under Webmin > Webmin Configuration > IP Access Control to restrict which addresses can reach the panel.

Can Ajenti manage Docker containers?

Yes, through the ajenti.plugin.docker plugin. Install it with pip3 install ajenti.plugin.docker, restart Ajenti, and you will get a Docker management section in the sidebar. This plugin allows you to view running containers, manage images, inspect container logs, and start/stop containers — similar to what Portainer provides, but integrated directly into the Ajenti interface.

Which panel is best for managing web hosting servers?

For dedicated web hosting (multiple domains, email accounts, databases per customer), Webmin with Virtualmin is the most capable option. Virtualmin adds domain provisioning, email account creation, database management, SSL certificate automation, and resource quotas — essentially turning Webmin into a full cPanel alternative. Cockpit lacks hosting-specific features, and Ajenti’s website management plugin is suitable for simple single-server setups but does not scale to multi-tenant hosting.

Do these panels replace SSH access entirely?

No. While all three panels provide web terminal access and cover most routine administration tasks, SSH remains essential for: troubleshooting complex issues that the UI cannot surface, scripting automated tasks, managing servers when the panel service is down, and performing advanced operations like kernel parameter tuning or debugging. Think of these panels as a productivity layer on top of SSH, not a replacement.