Software Alternatives & Startups

AstraVerify VS CloudLinux

Compare AstraVerify VS CloudLinux and see what are their differences

AstraVerify

See your site the way ChatGPT, Google and mail servers see it. Two scores in seconds: email authentication (SPF, DKIM, DMARC, MX) and whether search and AI crawlers can read the site, each with the exact record, file or tag to fix. Free, no sign-up.

Rating
0 reviews
Pricing
Freemium Free trial $12 / Monthly (Monitoring, 1 domain)
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.

AstraVerify
CloudLinux
Website astraverify.com cloudlinux.com
Pricing
Freemium Free trial $12 / Monthly (Monitoring, 1 domain) Official pricing
Open source
Platforms
Web REST API
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Listed in

Features and specs

What each product offers, as listed by its team.

AstraVerify 3 features
CloudLinux 5 features
  • Email Security score
    MX, SPF, DKIM and DMARC scored out of 100, including SPF permanent errors and whether DMARC is actually enforced
  • Fetch as crawler
    Requests your page as Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot and OAI-SearchBot, catching CDN blocks robots.txt does not show
  • DKIM selector discovery
    Checks about 80 common selectors, or reads the real selector from an email you send it (for Amazon SES, Postmark and others that randomise)
  • 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.

AstraVerify
CloudLinux

No analysis of AstraVerify 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.

AstraVerify 0 videos + Add
CloudLinux 3 videos + Add

No AstraVerify 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
AstraVerify
CloudLinux
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing AstraVerify and CloudLinux.

What's the story behind your product?

AstraVerify's answer

It came out of consulting work. The same questions kept coming up across client engagements: how is my email doing? Is my mail actually reaching inboxes? Could someone send mail pretending to be us? How does our website look to search engines, and lately, to AI bots?

We could answer those in plain English, and the answer was usually "you are fine" or "that one is good". But that is about as far as plain English gets you. It does not tell you how far from fine, which of five problems to deal with first, or whether the next hour of work is worth more than the one after it.

A score does. Breaking it into components, each with its own points, turns a vague reassurance into something specific: this is what you have, this is what is missing, this is the record to publish, and this is where the biggest gain is for the least effort. That last part matters most to the people who are never going to do all of it.

We looked for a tool that covered both sides, the email authentication and the way search and AI crawlers see the site, and could not find one. So we built it.

One honest limit, since those questions included inbox placement: AstraVerify scores the things that decide whether your mail is trusted, which is authentication (MX, SPF, DKIM, DMARC). It does not run seed-list deliverability tests and will not tell you which folder a given message landed in.

Which are the primary technologies used for building your product?

AstraVerify's answer

A React front end on Firebase Hosting behind Cloudflare, and a Python and Flask back end on Google Cloud Run, with Firestore for stored scans and history.

The DNS work uses dnspython for MX, SPF, DKIM and DMARC lookups and for parsing DMARC aggregate reports. The discoverability scan fetches robots.txt, the sitemap, the root page and a few inner pages concurrently, and repeats the root page once per crawler user agent.

One detail worth mentioning: the scoring rules are written once and compiled into a bundle that both the website and the API evaluate, so the score an assistant reports and the score on the report page cannot drift apart. There is also an MCP server at /mcp, so assistants can run the same checks inside a chat, and a REST API documented by an OpenAPI spec.

What makes your product unique?

AstraVerify's answer

AstraVerify checks the two things that decide whether a domain is trusted, and checks them together: whether mail from it is authenticated, and whether search and AI engines can actually read the site.

The part no other tool does is the second half. Most checkers read robots.txt and stop there. AstraVerify requests your page as Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot and OAI-SearchBot and reports what each one actually received. That catches the common and invisible failure where a CDN or firewall returns 403 to an AI crawler while robots.txt and the origin both say the page is allowed.

Two more things are unusual. DKIM selectors cannot be listed from DNS, so for providers that randomise them (Amazon SES, Postmark) you can send AstraVerify one email and it reads the selector straight from the signature. And every finding comes with the exact record, file or tag to publish, plus a button that re-checks that one item, so you fix and verify without rescanning everything.

How would you describe the primary audience of your product?

AstraVerify's answer

People who are responsible for a domain without being specialists in DNS or email authentication.

In practice that is founders and marketing owners at small companies, IT generalists who look after everything, and the agencies, consultants and web shops that manage domains on behalf of clients. The last group tends to check several domains in a sitting, which is why scanning needs no account.

The common thread is someone who can edit a DNS record or a page template but does not want to read RFC 7489 first. That shapes the output: plain language, the exact value to paste, and a re-check for the one thing you changed.

Why should a person choose your product over its competitors?

AstraVerify's answer

Because most people need both halves and end up buying two tools.

DMARC platforms do email authentication thoroughly but say nothing about whether your site can be crawled or quoted. SEO auditors do the opposite. AstraVerify scores both in one check, free, with no account.

It is also deliberately specific. Each finding names the record, file or tag to publish rather than telling you something is wrong, and a Verify button re-checks that single item afterwards.

Where it is not the right choice, plainly: if you need DMARC aggregate reports across dozens of client domains with role-based access and SLAs, a dedicated enterprise DMARC platform will serve you better. AstraVerify does analyse DMARC reports under its paid monitoring, but it is built for the owner of one domain or the agency looking after a handful, not for a large managed-service deployment.

User comments

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