Software Alternatives & Startups

CloudLinux VS Keelen

Compare CloudLinux VS Keelen 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
Keelen

An autonomous coding loop: it plans tasks from your roadmap, writes code in isolated VMs on your own Claude, Codex, GLM, or Kimi key, and ships tested PRs.

Rating
0 reviews
Pricing
Paid Free trial $29 / Monthly (Indie, 200 iterations, 3 projects)
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.

CloudLinux
Keelen
Website cloudlinux.com keelen.ai
Pricing
Open source
Paid Free trial $29 / Monthly (Indie, 200 iterations, 3 projects) Official pricing
Company — 2026
Listed in

About CloudLinux and Keelen

In their own words, as submitted to SaaSHub.

CloudLinux
Keelen

No description of CloudLinux yet.

Keelen is an autonomous coding loop: an AI development team that runs against your GitHub repository around the clock. It turns free-form requests into a prioritized roadmap, breaks roadmap items into dev-ready tasks with acceptance criteria, implements each task in an isolated single-use VM...

Read more about Keelen

Features and specs

What each product offers, as listed by its team.

CloudLinux 5 features
Keelen 0 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.

No features have been listed yet.

Analysis

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

CloudLinux
Keelen

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 Keelen yet.

Videos

Walkthroughs and reviews on video.

CloudLinux 3 videos + Add
Keelen 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 Keelen videos yet. You could help us improve this page by suggesting one.

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
CloudLinux
Keelen
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 Keelen.

What makes your product unique?

Keelen's answer:

Keelen works from a standing roadmap rather than from a prompt. It picks its own next task, implements it in an isolated single-use VM, and puts every change through five verification gates before merge: a red-first test proof (tests born green are rejected), an independent adversarial review of the diff by a model that shares no context with the run that wrote it, the project's own test suite on a clean checkout, a CI-green requirement at merge time, and a review window before gated auto-merge. The loop may never weaken a check to get to green. It runs on your own Claude, Codex, GLM, or Kimi key, so token usage bills to your provider account at cost with zero markup.

Why should a person choose your product over its competitors?

Keelen's answer:

Keelen is not an IDE copilot and not a prompt-driven chat agent, so it does not need you present at the keyboard to make progress. Two differences matter most. First, verification is enforced rather than suggested: a new test must fail without the implementation and pass with it, an independent model reviews the diff adversarially, and the loop may never weaken a check to reach green. Second, you bring your own model key, so model spend stays on your own provider bill at cost and the Keelen tier stays a flat monthly price with zero token markup. Human control is configurable per project: plan review before any code is written, manual merge, or branch-only where Keelen never opens a pull request.

How would you describe the primary audience of your product?

Keelen's answer:

Solo developers, indie hackers, and small product teams who already pay for a Claude, Codex, GLM, or Kimi plan and want that capacity turned into merged pull requests while they work on something else. Agencies running several client repositories use the higher tiers for per-project isolation, more concurrent runs, and seats. Keelen suits people who keep a roadmap and want work picked up from it continuously, rather than people who want line-by-line completion inside an editor.

What's the story behind your product?

Keelen's answer:

Keelen was founded in 2026 by Jamie Keelen. It grew out of a simple observation: coding models had become good enough to write the change, but not good enough to be trusted with merging it. The hard part was never generation, it was verification. So Keelen was built around gates instead of prompts. Keelen's own repository runs on the loop. The same gates, reconcilers, and recovery paths that customers get are the ones that ship Keelen itself, which means a weakness in the loop shows up as a failure in Keelen's own pull requests before it reaches anyone else.

Which are the primary technologies used for building your product?

Keelen's answer:

The coding work itself is done by the model you connect: Anthropic Claude via Claude Code, OpenAI Codex, Zhipu GLM 5.2, or Moonshot Kimi K3. Keelen is the loop around them. Each iteration runs in an isolated single-use, non-root VM that is destroyed when the run ends, with network egress deny-by-default through a proxy. Repository access goes through the official GitHub App, using per-run tokens scoped to a single repository for about an hour and with no permission to modify CI workflows. Keelen also exposes a hosted MCP server, so the loop can be driven from any MCP client. The projects it works on span TypeScript and JavaScript, Python, Go, Rust, C and C++, Godot, and Roblox.

User comments

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