Software Alternatives & Startups

Port Checker VS CloudLinux

Compare Port Checker VS CloudLinux and see what are their differences

Port Checker

Check open ports online

Rating
0 reviews
CloudLinux

Making Linux secure, stable, and profitable for thousands of hosting providers and data centers worldwide.

Rating
0 reviews
Pricing
Open source
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Port Checker seems to be more popular. It has been mentioned 263 times since March 2021.

social mentions
263 vs 0
Monitoring Tools popularity
100% vs 0%

Base details

Website, pricing, platforms and company facts side by side.

PC
Port Checker
CloudLinux
Website portchecker.co cloudlinux.com
Pricing —
Open source
Listed in

Features and specs

What each product offers, as listed by its team.

PC
Port Checker 4 features
CloudLinux 5 features
  • Ease of Use
    Port Checker offers a straightforward interface, allowing users to easily check the status of a specific port quickly without technical expertise.
  • Free Service
    The service is completely free, making it accessible for anyone who needs to verify port configuration without any cost.
  • No Installation Required
    Being a web-based tool, Port Checker requires no installation or downloads, making it convenient for use on any device with internet access.
  • Quick Results
    Users receive rapid feedback on the status of their ports, enabling them to diagnose and troubleshoot networking issues promptly.

Possible disadvantages

  • Limited Features
    Port Checker is designed primarily for checking open or closed ports, and lacks advanced networking diagnostic tools available in more comprehensive software.
  • Internet Dependency
    Since it is a web-based tool, it requires an active internet connection, potentially limiting usability in offline or restricted network environments.
  • Privacy Concerns
    Using an online tool to check ports may raise privacy concerns as the attempt to connect to the ports is made from an external server.
  • Potential Inaccuracy
    External port checking tools can sometimes yield inaccurate results due to network configurations, firewalls, or other security settings blocking certain actions.
  • Enhanced Server Stability
    CloudLinux uses its lightweight virtualization technology (LVE) to isolate each tenant on a shared hosting server, preventing any single user from consuming excessive resources and crashing the server for everyone else. This ensures consistent uptime and performance.
  • Improved Security with HardenedPHP and KernelCare
    CloudLinux offers HardenedPHP, which patches old and unsupported PHP versions against known vulnerabilities, and KernelCare, which provides live kernel patching without requiring server reboots. These features significantly enhance server security posture.
  • Resource Limit Management
    Administrators can set granular resource limits (CPU, memory, I/O, number of processes, etc.) per user account using LVE Manager. This makes it easy to manage shared hosting environments and ensure fair resource distribution among tenants.
  • CageFS File System Virtualization
    CageFS creates a virtualized file system for each user, preventing them from seeing other users on the server, viewing sensitive configuration files, or exploiting server vulnerabilities. This adds an important layer of isolation and security.
  • Wide Compatibility with Hosting Panels
    CloudLinux integrates seamlessly with popular hosting control panels such as cPanel, Plesk, and DirectAdmin, making it straightforward for hosting providers to adopt without overhauling their existing infrastructure or workflows.

Possible disadvantages

  • Additional Licensing Cost
    CloudLinux requires a paid monthly or annual license on top of the base server cost. For smaller hosting providers or individual server owners, this additional expense can add up and may not always be justifiable compared to free alternatives.
  • Limited to CentOS/RHEL-Based Systems
    CloudLinux is built on top of RHEL/CentOS and does not support other Linux distributions like Ubuntu or Debian. This limits its adoption for hosting providers who prefer or already run non-RHEL-based environments.
  • Learning Curve for Configuration
    While CloudLinux provides powerful resource management tools, properly configuring LVE limits, CageFS, PHP Selector, and other features requires a solid understanding of the platform. Misconfiguration can lead to users being unnecessarily restricted or resources being poorly allocated.
  • Potential Performance Overhead
    The additional layers of virtualization, resource monitoring, and file system isolation introduced by CloudLinux can impose a slight performance overhead on the server compared to running a bare, unmodified Linux distribution without these controls.
  • Dependency on CloudLinux Ecosystem
    Adopting CloudLinux means relying on their ecosystem for kernel updates, PHP patches, and security fixes. If the company experiences delays in releasing patches or changes its pricing/licensing model, hosting providers may find themselves locked into a dependency that is difficult to migrate away from.

Analysis

An editorial look at what each product does well and who it suits.

PC
Port Checker
CloudLinux

No analysis of Port Checker yet.

Overall verdict

  • CloudLinux is a well-regarded, mature Linux OS distribution and toolset specifically designed for shared hosting and multi-tenant server environments, offering strong isolation, resource management, and security features that make it a solid choice for hosting providers.

Why this product is good

  • Provides LVE (Lightweight Virtual Environment) technology for per-tenant resource isolation, preventing 'bad neighbor' effects on shared servers
  • Enhances server stability and security by isolating users so that one account's issues (crashes, resource spikes) don't affect others
  • Offers extended lifecycle support (longer than standard CentOS/RHEL support windows), which is valuable for legacy systems
  • Includes tools like CloudLinux OS Shield, Imunify360 integration, and hardened kernel options for improved security
  • Compatible with popular control panels like cPanel and Plesk, making it easy to integrate into existing hosting stacks
  • Backed by an established company with a long track record in the hosting industry and responsive support
  • Offers granular control over CPU, memory, I/O, and other resources per user account
  • Provides PHP Selector and multiple PHP version support, useful for hosting providers serving diverse client needs

Recommended for

  • Web hosting companies running shared or reseller hosting environments
  • Hosting providers needing to isolate customer accounts on the same physical server
  • Businesses requiring extended OS support lifecycles beyond standard RHEL/CentOS EOL dates
  • Enterprises using cPanel or Plesk that want tighter security and resource control
  • Hosting companies looking to reduce support tickets caused by noisy-neighbor resource contention
  • IT teams managing multi-tenant infrastructure who need governance and monitoring tools built into the OS layer

Videos

Walkthroughs and reviews on video.

PC
Port Checker 2 videos + Add
CloudLinux 3 videos + Add

AI Multiagent Port Checker with Examples

More videos

  • - Open Port Checker Tool - Test Port Forwarding

When To Use Cloudlinux On Your Virtual Private Server (VPS)

More videos

  • - CloudLinux OS+ in a minute: Explore Features
  • - How CloudLinux Plans to Keep CentOS 6 Alive

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
PC
Port Checker
CloudLinux
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using Port Checker and CloudLinux. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

PC
Port Checker 263 mentions
CloudLinux 0 mentions
  • Portforwarded but server still doesn't show up in list
    Hello, I have an Xfinity tg1682g router/modem combo and it requires you to portforward through the xfinity app, which I did. I have opened ports 27014-27017 tcp/udp, and even used the site portchecker.co to see if my port is open, and it... Source: about 3 years ago
  • (ARK:SE) Okay Guys, What Is Wrong With The Dedicated Server? (Or myself?)
    What router do you have? If portchecker.co isn't showing that the port is open, then your port forwarding didn't work. Source: over 3 years ago
  • (ARK:SE) Okay Guys, What Is Wrong With The Dedicated Server? (Or myself?)
    You can check if your port forwarding worked by using a site like https://portchecker.co/. Source: over 3 years ago

View more

Tracking CloudLinux since Mar 2021.

Alternatives to Port Checker and CloudLinux

When comparing Port Checker and CloudLinux, you can also consider the following products.