Software Alternatives & Startups

Light Meter Ultra VS CloudLinux

Compare Light Meter Ultra VS CloudLinux and see what are their differences

Light Meter Ultra

Precision exposure for film photography.

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0 reviews
CloudLinux

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

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0 reviews
Pricing
Open source
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Base details

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

Light Meter Ultra
CloudLinux
Website lightmeterultra.com cloudlinux.com
Pricing —
Open source
Listed in

Features and specs

What each product offers, as listed by its team.

Light Meter Ultra 5 features
CloudLinux 5 features
  • Accurate Light Measurement
    Light Meter Ultra provides precise lux and foot-candle measurements using the device's ambient light sensor, making it a convenient tool for photographers, videographers, and lighting professionals who need reliable readings on the go.
  • User-Friendly Interface
    The app features a clean and intuitive interface that makes it easy for both beginners and professionals to quickly take light readings without a steep learning curve.
  • Cost-Effective Alternative
    Compared to purchasing a dedicated physical light meter, Light Meter Ultra offers a much more affordable solution by leveraging the sensors already built into smartphones.
  • Portable and Convenient
    Since it runs on a smartphone, users always have a light meter available without needing to carry additional equipment, making it ideal for quick measurements and scouting locations.
  • Additional Features
    The app often includes useful extras such as exposure calculation, different measurement units, and the ability to log or save readings for later reference, adding value beyond a basic light meter.

Possible disadvantages

  • Sensor Limitations
    Smartphone ambient light sensors are not as precise or capable as dedicated light meter hardware, which can lead to less accurate readings especially in extreme lighting conditions (very low or very bright light).
  • Device Variability
    Accuracy can vary significantly between different smartphone models since each device has a different quality and type of ambient light sensor, leading to inconsistent results across devices.
  • No Incident Light Measurement
    Unlike professional standalone light meters that come with a lumisphere for incident light readings, a smartphone app is limited to reflected/ambient light measurement, which restricts its usefulness for certain photography and cinematography applications.
  • Calibration Concerns
    The app may require manual calibration to achieve accurate results, and without a reference standard light meter, users may not be able to verify or correct the accuracy of their readings.
  • Limited Professional Use
    For critical professional work where precise and repeatable measurements are essential (such as studio photography or architectural lighting design), the app may not meet the standards required compared to dedicated professional-grade light meters.
  • 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.

Light Meter Ultra
CloudLinux

Overall verdict

  • Light Meter Ultra is a solid, purpose-built tool for anyone needing accurate light measurement, offering a clean interface and reliable readings that make it a worthwhile choice for photographers and enthusiasts.

Why this product is good

  • Provides accurate and consistent light readings suitable for exposure decisions
  • User-friendly interface that simplifies measuring ambient and reflected light
  • Convenient mobile-based solution that eliminates the need for a dedicated hardware meter
  • Useful for both learning about exposure and practical shooting scenarios

Recommended for

  • Photographers wanting a portable alternative to a standalone light meter
  • Videographers needing quick exposure and lighting checks
  • Photography students learning about light and exposure fundamentals
  • Hobbyists and enthusiasts who want affordable light measurement 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.

Light Meter Ultra 0 videos + Add
CloudLinux 3 videos + Add

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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
Light Meter Ultra
CloudLinux
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100% 100%
100% 100%
0% 0%
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User comments

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Alternatives to Light Meter Ultra and CloudLinux

When comparing Light Meter Ultra and CloudLinux, you can also consider the following products.