Software Alternatives & Startups

CloudLinux VS VerifiedLimits

Compare CloudLinux VS VerifiedLimits and see what are their differences

CloudLinux

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

Rating
0 reviews
Pricing
Open source
VerifiedLimits

Free HSA, IRA, and 401(k) calculators for contribution limits, eligibility, and excess-contribution penalties โ€” verified against IRS Revenue Procedures. No login required, nothing stored; every calculation runs entirely in your browser.

Rating
0 reviews
Pricing
Free
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Base details

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

CloudLinux
VerifiedLimits
Website cloudlinux.com verifiedlimits.com
Pricing
Open source
Free
Platforms โ€”
Web Browser
Company โ€” Startup from Bulgaria ยท 1 - 9 employees ยท 2026
Listed in

About CloudLinux and VerifiedLimits

In their own words, as submitted to SaaSHub.

CloudLinux
VerifiedLimits

No description of CloudLinux yet.

Ledger&Leaf is built for one job: getting IRS contribution limits, eligibility rules, and penalty math exactly right for HSAs, IRAs, and 401(k)s โ€” nothing else competing for your attention. Twelve calculators, each verified directly against primary IRS sources (Rev. Proc. 2025-19, Rev. Proc....

Read more about VerifiedLimits

Features and specs

What each product offers, as listed by its team.

CloudLinux 5 features
VerifiedLimits 5 features
  • 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.
  • IRS-Verified Data
    Every contribution limit sourced directly from IRS Revenue Procedures and Notices, dated and cited on each calculator
  • No Login Required
    All calculations run client-side in your browser โ€” no account, nothing sent to a server
  • Calculator Suite
    12 calculators covering HSA, IRA, 401(k), HDHP vs. PPO, and Tax Bracket thresholds
  • Edge-Case Coverage
    Handles mid-year HDHP proration, the Medicare-enrollment HSA trap, 401(k) employer-match true-up, and the SECURE 2.0 mandatory Roth catch-up
  • Annual Updates
    Figures refreshed each year as new IRS Revenue Procedures are released, with a published corrections policy

Analysis

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

CloudLinux
VerifiedLimits

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

No analysis of VerifiedLimits yet.

Videos

Walkthroughs and reviews on video.

CloudLinux 3 videos + Add
VerifiedLimits 0 videos + Add

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

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

Category popularity

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

Score bands 0โ€“20 21โ€“40 41โ€“50 51โ€“60 61โ€“100
CloudLinux
VerifiedLimits
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing CloudLinux and VerifiedLimits.

What makes your product unique?

VerifiedLimits's answer:

Most calculator sites treat HSA and 401(k) limits as one generic feature buried in a catalog of unrelated tools. Ledger&Leaf does the opposite: twelve calculators, one category โ€” US tax-advantaged account thresholds โ€” each verified directly against IRS Revenue Procedures and Notices, not estimated.

It also covers what generic calculators skip entirely:

  • Mid-year HDHP coverage changes
  • The Medicare-enrollment trap that zeroes HSA eligibility
  • Employer-match true-up shortfalls
  • The SECURE 2.0 mandatory Roth catch-up

No login, no account, no data stored โ€” every number is calculated in your browser and nowhere else.

Why should a person choose your product over its competitors?

VerifiedLimits's answer:

Getting a contribution limit wrong costs real money โ€” a 6% excise tax on excess HSA or IRA contributions, a missed employer match, a blown catch-up window.

  • Every figure sourced to a specific IRS Revenue Procedure or Notice, dated and rechecked
  • A public corrections policy if something's ever wrong
  • No sign-up wall, no upsell to a paid tier, no content padding between you and the answer

How would you describe the primary audience of your product?

VerifiedLimits's answer:

US taxpayers actively managing an HSA, IRA, or 401(k) who want a precise answer, not a rough estimate โ€” DIY investors from communities like Bogleheads and r/financialindependence, and people navigating a specific edge case: a job change mid-year, a shift in HDHP coverage, or catch-up eligibility that simpler calculators don't model.

What's the story behind your product?

VerifiedLimits's answer:

Ledger&Leaf started from a simple observation: the numbers that actually decide whether an HSA or 401(k) contribution is safe โ€” prorated limits, catch-up thresholds, mid-year coverage changes โ€” are scattered across dense IRS documents that most calculators simplify past the point of being reliable.

It's built and maintained by a solo founder, one calculator at a time, verifying every figure against the primary source before it ships. The goal isn't to be another all-purpose finance hub โ€” it's to be the place people go when this specific answer needs to be right.

Which are the primary technologies used for building your product?

VerifiedLimits's answer:

A client-side single-page application, entirely browser-based:

  • React 18 with React Router 7 for routing
  • Tailwind CSS and Radix UI/shadcn for the interface
  • Built and deployed via Hostinger Horizons

No backend, no database โ€” every calculation runs client-side, which is also why no login or account is ever required.

User comments

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