Software Alternatives & Startups
Register | Login

Zadarma VS CloudLinux

Compare Zadarma VS CloudLinux and see what are their differences

Zadarma

A new generation of VoIP for your business. Zadarma offers virtual phone numbers in 100+ countries, cloud PBX, and CRM systems.

Rating
4.3 · 6 reviews
Pricing
Open source Freemium Free trial
Promote on VibeVoted
Alternatives Is it good?
CloudLinux

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

Rating
0 reviews
Pricing
Open source
Promote on VibeVoted
Alternatives Is it good?
EcholoN
EcholoN is an Enterprise Application Framework and configurable software platform for ESM, ITSM, Service Desk, CMDB, Customer Service, Field Service Management and custom digital business processes. sponsored
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, Zadarma seems to be more popular. It has been mentioned 4 times since March 2021.

social mentions
4 vs 0
VoIP popularity
100% vs 0%

Base details

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

Zadarma
CloudLinux
Website zadarma.com cloudlinux.com
Pricing
Open source Freemium Free trial Official pricing
Open source
Platforms
Windows iOS Android
—
Company 2006 —
Listed in
VoIP PBX Cloud Business Telephony Virtual Phone Number Customer Support CRM Live Chat Help Desk +5
Hosting Web Hosting Cloud Hosting VPS Hosting +1

About Zadarma and CloudLinux

In their own words, as submitted to SaaSHub.

Zadarma
CloudLinux

Zadarma enables you to set up your business phone system without heavy hardware and wiring expenses. What features does Zadarma’s PBX phone system offer? - Virtual phone numbers in more than 100 countries - Call recording and call transfer with call performance statistics - PBX integration with...

Read more about Zadarma

No description of CloudLinux yet.

Features and specs

What each product offers, as listed by its team.

Zadarma 3 features
CloudLinux 5 features
  • "Standard" price plan
    $0
  • "Office" price plan
    $22
  • "Corporation" price plan
    $44
  • 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.

Zadarma
CloudLinux

Overall verdict

  • Overall, Zadarma is a solid choice for individuals or businesses seeking reliable VoIP services. Its feature set, pricing, and customer support make it suitable for a variety of communication needs.

Why this product is good

  • Zadarma is generally considered a good option for VoIP services because it offers competitive pricing, a wide range of features, and flexibility in choosing plans. Users appreciate its extensive international call coverage and integration capabilities with various business tools. The service also provides robust support options and has a user-friendly interface.

Recommended for

  • Small to medium-sized businesses looking for affordable VoIP solutions.
  • Individuals or freelancers who need international calling at competitive rates.
  • Companies that require easy integration of VoIP with CRM or other business tools.

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.

Zadarma 4 videos + Add
CloudLinux 3 videos + Add

Zadarma and Shopify Integration

More videos

  • - Testing Zadarma Apps
  • - Zadarma - Phone System for Small & Medium Businesses
  • - Zadarma Virtual Phone Numbers

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
Zadarma
CloudLinux
100% 100%
VoIP
0% 0%
0% 0%
Hosting
100% 100%
100% 100%
Customer Support
0% 0%
0% 0%
Cloud Hosting
100% 100%

User comments

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

Log in or Post with

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Zadarma 4.3 · 6 reviews
CloudLinux no reviews yet
  • Quality of the service and really impressive support!!!
    SaaSHub review
    · Mar 2026

    Versatile VoIP platform that offers a robust suite of tools

  • Works like a charm
    SaaSHub review
    · Mar 2026

    For the price I expected something basic but this feels high-end. Everything from setup to sound quality is professional. Recommending Zadarma to my friends and partners.

  • Highly recommended
    SaaSHub review
    · Mar 2026

    I use Zadarma daily for my business need, and certainly can say - it was good choice. It helps to organize my remote work and employees in different countries. Good pricing, easy to use, friendly support.

View more

We have no reviews of CloudLinux yet. Be the first one to post

Social recommendations and mentions

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

Zadarma 4 mentions
CloudLinux 0 mentions
  • Any solution for virtual international numbers
    You can use a service like Zadarma that allows you to buy virtual numbers in various countries. You cannot tie this to your Fi account but you can run the Zadarma app on your phone to make and receive calls using the virtual number. Some... Source: over 3 years ago
  • Voip for Small Business - Options seem lacking
    Zadarma.com - Landline US number with IVR and other features costs 2 USD, it also receives SMS messages and can forward them to the app or email/messengers. However, you cannot send SMS from a landline number, just reception. You can... Source: almost 4 years ago
  • Virtual Phone Number
    Https://zadarma.com/en/ - very good product.. Easy to use and hassle free. Source: about 5 years ago

View more

Tracking CloudLinux since Mar 2021.

Alternatives to Zadarma and CloudLinux

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

Loading...