Software Alternatives & Startups

TestPageLab VS CloudLinux

Compare TestPageLab VS CloudLinux and see what are their differences

TestPageLab

Free printer test pages and true-to-scale printable paper

Rating
0 reviews
Pricing
Free
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.

TestPageLab
CloudLinux
Website testpagelab.com cloudlinux.com
Pricing
Open source
Listed in

Features and specs

What each product offers, as listed by its team.

TestPageLab 5 features
CloudLinux 5 features
  • Printer test pages
    Print a test page in one click, or download free true to size PDF test pages: color, black, CMYK, nozzle check and alignment. Each PDF is exact at 100% scale.
  • A scale bar you can measure
    The printer test pages carry a 100 mm scale bar. Hold a ruler to it after printing and you know whether the printer shrank the page.
  • Graph, lined and staff paper
    Paper generators for square, dot and isometric grids, lined and handwriting paper, and staff paper. Set the spacing in inches or millimeters, the line color, and US Letter or A4, then download a PDF that prints true to size.
  • Calibration line on each sheet
    Every graph, lined and staff paper sheet prints a calibration line labelled with its own length, so a ruler tells you in seconds whether the print is the right size.
  • Free, no ads, no account
    Free, with no ads, no account and no cookies. Nothing you print is uploaded.
  • 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.

TestPageLab
CloudLinux

No analysis of TestPageLab 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.

TestPageLab 0 videos + Add
CloudLinux 3 videos + Add

No TestPageLab videos yet. You could help us improve this page by suggesting one.

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
TestPageLab
CloudLinux
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing TestPageLab and CloudLinux.

Why should a person choose your product over its competitors?

TestPageLab's answer

Because you can check the result. A test page that is only a picture can't tell you whether it printed at the right size; testpagelab's scale bar and calibration lines can, and a guide explains what each fault on the print means and what causes it. The paper generators let you set the spacing in inches or millimeters, the line color and US Letter or A4, then download a PDF that prints true to size. There are no ads, no account and no cookies, and nothing you print is uploaded.

What makes your product unique?

TestPageLab's answer

Every sheet is drawn from measurements and prints at exact size. The printer test pages carry a 100 mm scale bar drawn at exactly 283.465 points, and every graph, lined and staff paper sheet prints a calibration line labelled with its own length, so a ruler tells you in seconds whether your printer shrank the page. The test page PDFs set ink values directly in CMYK, so the cyan sheet asks for cyan ink and nothing else. The methodology page shows the arithmetic and keeps a dated changelog.

How would you describe the primary audience of your product?

TestPageLab's answer

People who print at home, at school or at work. On the printer side: anyone checking a new or misbehaving printer, and IT and help desk staff who need a known-good test sheet. On the paper side: students and teachers who need graph, dot, isometric or lined paper, parents printing handwriting paper, and musicians and music teachers who need staff paper. What they share is needing a sheet that prints at the right size on US Letter or A4.

What's the story behind your product?

TestPageLab's answer

testpagelab started in August 2026 as a single printer test page, built by me around one idea: a test print you can't check is just a picture. Every sheet is generated from measurements by the site's own code, and the scale bar was verified on paper, where the 100 mm bar measured 100.19 mm through Chrome's print path at 100%. Graph, lined and staff paper generators followed, built the same way, so every printable sheet carries a calibration line you can check with a ruler. Every change is listed in a dated changelog on the methodology page.

Which are the primary technologies used for building your product?

TestPageLab's answer

A static site with no third party code. Pages are written in Markdown and built into plain HTML by a Python script with Jinja2 templates. The printer test PDFs come from a standard library Python PDF writer that sets ink values directly in CMYK. The paper generators run on a small JavaScript engine (ES modules) that draws the same sheet as PDF, SVG and PNG, in the browser.

Who are some of the biggest customers of your product?

TestPageLab's answer

None to name: testpagelab is free and has no accounts, so it keeps no customer list.

User comments

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Alternatives to TestPageLab and CloudLinux

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