Software Alternatives & Startups

Selzy VS CloudLinux

Compare Selzy VS CloudLinux and see what are their differences

Selzy

The easiest way to start selling with emails

Rating
0 reviews
Pricing
Freemium Free trial $7.5 / Monthly
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.

Base details

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

Selzy
CloudLinux
Website selzy.com cloudlinux.com
Pricing
Freemium Free trial $7.5 / Monthly Official pricing
Open source
Company 2021 —
Listed in

About Selzy and CloudLinux

In their own words, as submitted to SaaSHub.

Selzy
CloudLinux

Selzy is an email marketing platform designed for small and midsize businesses that need an affordable and easy-to-use tool for creating and managing campaigns. With its drag-and-drop email builder and ready-made templates, you can launch a campaign in as little as 15 minutes without any design...

Read more about Selzy

No description of CloudLinux yet.

Features and specs

What each product offers, as listed by its team.

Selzy 11 features
CloudLinux 5 features
  • AI Email Builder
    Play with the pre-built blocks to create the perfect-high converting emails your users want to receive.
  • Automation
    Let your emails run the show 24/7 So you can focus on more important things.
  • Email analytics
    Selzy email analytics tool helps you with everything ― from the basics to the advanced metrics. Integrate with Google Analytics and track sales. Spot which devices and send time perform best for you. The click map shows you the conversion from every single link and button. To boost your future results, use the assessment tool or analyze your past campaigns.
  • Free bulk email service
    With Selzy free bulk email service, you can easily create and send stunning campaigns that matter to each subscriber.
  • Personalization
    Send only what matters to your subscribers to make them feel special and boost your conversion rates.
  • Segmentation
    Send custom-tailored emails to skyrocket your conversion with Selzy email segmentation tool
  • Integrations
    Connect Selzy with a CRM, a CMS, a website builder, or other services.
  • Ai Email assistant
    Optimize every element of your email
  • Dedicated IP
    Dedicated IP for email marketing ensures optimal inbox placement, improved sender reputation, and enhanced email deliverability.
  • Email Verifier
    Improve deliverability by finding and removing inactive email addresses from your contact list — 100% automatically.
  • Subscription Forms
    Get new leads and add new readers to your newsletter through an email subscription form.
  • 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.

Selzy
CloudLinux

No analysis of Selzy 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.

Selzy 3 videos + Add
CloudLinux 3 videos + Add

How To Create An Email Campaign in Selzy

More videos

  • - Selzy Review: AI-Powered Email Marketing Platform - Mailchimp Alternative
  • - Launch Intelligent Email Campaigns with Selzy

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
Selzy
CloudLinux
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing Selzy and CloudLinux.

How would you describe the primary audience of your product?

Selzy's answer

Small and medium-sized businesses.

Why should a person choose your product over its competitors?

Selzy's answer

Selzy is an easy-to-use email marketing tool, even for beginners, and with prices starting at $7.50, it is a cost-effective option.

User comments

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Alternatives to Selzy and CloudLinux

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