ClearScale Ubuntu 26.04 LTS vs PubNub comparison

ClearScale Ubuntu 26.04 LTS

Read 6 PubNub reviews

1,698 Views
1,104 Comparison Views

100% willing to recommend

Comparison Buyer's Guide

Download the report

Executive Summary

We performed a comparison between ClearScale Ubuntu 26.04 LTS and PubNub based on real PeerSpot user reviews.

Find out in this report how the two AWS Marketplace solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed ClearScale Ubuntu 26.04 LTS vs. PubNub Report (Updated: July 2026).

ClearScale Ubuntu 26.04 LTS vs. PubNub

July 2026

Download the complete report

Helped 909,948 peers since 2012

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

ClearScale Ubuntu 26.04 LTS

Ranking in AWS Marketplace

419th

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

PubNub

Ranking in AWS Marketplace

17th

Average Rating

8.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Featured Reviews

reviewer2855598

Cloud DevOps Engineer at a consultancy with 10,001+ employees

CIS hardening has simplified secure container workloads but AppArmor still blocks Docker by default

The CIS L1 AppArmor enforcement breaks Docker out of the box. Containers fail to start with a permission denied on the containerd task directory. There is no documentation about this. A simple note explaining that Docker users need to either update the runc AppArmor profile or disable it would save a lot of debugging time. It takes a while to trace the failure back to AppArmor blocking runc writes to /run/containerd/.

Read full review

Kirtishil Patil

Senior Frontend Developer at Globant

Real-time chat has boosted one-to-one messaging and user engagement in my mobile projects

The best features PubNub offers, in my opinion, are one-to-one chat, as I mentioned in my review, and the great SDK documentation which allows for easy integration that does not take much time. Setting up channels, message listeners, tracking user status to determine whether users are online or offline, and ensuring reliable message delivery are all great features. I find myself relying on all three of those features the most because the presence tracking is great, the delivery speed is superb compared to other SDKs, and the user status updates immediately pop up, which is significant. The integration is very easy, so any new developers can easily understand the integration process thanks to the clear documentation. PubNub has positively impacted my organization as I have received numerous reviews and feedback stating that the chat works much faster and cleaner, and everyone appreciates it, saying it feels powerful. After implementing PubNub, I noticed positive outcomes such as client feedback acknowledging that they enjoyed the chat features and found them much faster than in other applications, which I believe is very positive feedback for any organization.

Read full review

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"ClearScale Ubuntu 26.04 LTS is an excellent choice for organizations adopting cloud-native technologies and modern DevOps practices."

"The hourly software charge is small relative to the engineering time we used to spend building and maintaining our own hardened AMI."

"The pre-applied CIS L1 benchmark is the main selling point, as getting a hardened baseline without manual effort is genuinely useful and the Ubuntu 26.04 LTS base also means I'm on a supported, up-to-date kernel with long-term security patches."

"The same-day engineering support has been very valuable."

"Once you get that launch template dialed in, the image is incredibly solid."

"The speed and efficiency of PubNub, which helps transfer data in real-time with very low latency, received positive feedback from our customers."

"PubNub saves development time because we do not have to create a complete chat backend and frontend from scratch, enabling a plug-and-play approach that saves time, effort, and money for the company."

"PubNub has positively impacted my organization as I have received numerous reviews and feedback stating that the chat works much faster and cleaner, and everyone appreciates it, saying it feels powerful."

"PubNub's push notification and chat features stand out because of ease of use and very easy integration within our application."

"If we had implemented all of this on our own, we would have had to hire at least 50 more employees for that, so we are very happy with PubNub and we have saved a lot of time."

"PubNub has positively impacted my organization by reducing implementation time and developers' work, making it very easy to implement and enabling fast development that has reduced the developers' time by 40-50%."

Cons

"Because the firewall ships default-deny, the first launch in a new environment takes a little planning to open the exact ports the app and load balancer health checks need."

"The CIS L1 AppArmor enforcement breaks Docker out of the box."

"Enterprise management and compliance tooling could be more comprehensive out of the box."

"It'd be cool to have more detailed changelogs with each new release so we can see exactly what packages got updated without having to boot up a test instance and diff it ourselves."

"Regarding customer support from PubNub, around six years ago, we did not receive good support."

"I believe PubNub can improve in terms of pricing transparency, as I previously mentioned, since that is the only thing I think should be improved because for smaller projects or startups, estimating scaling costs can be challenging."

"Since PubNub is a paid library, it may not be useful for everyone."

"Most of the time there are some instances at the load peak hours or sometimes payload is missed by the application or SDK at the SDK level."

"The reliability of PubNub is really good, but occasionally we face issues where users complain about messages or push notifications not being delivered within a short period of time, as it occasionally takes longer, which could be due to outages."

"I gave PubNub a rating of nine out of ten because of the many features discussed, but I deducted one point because the cost increases with scale."

See which vendors are best for you

Use our free recommendation engine to learn which AWS Marketplace solutions are best for your needs.

See recommendations

909,948 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

No data available

Construction Company

38%

Manufacturing Company

14%

Comms Service Provider

Outsourcing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

What is your experience regarding pricing and costs for ClearScale Ubuntu 26.04 LTS?

The hourly premium is honestly negligible compared to the salary hours I was wasting building, patching, and maintaining my own custom images. If you have a decent-sized fleet, look at the total co...

What needs improvement with ClearScale Ubuntu 26.04 LTS?

It would be cool to have more detailed changelogs with each new release so I can see exactly what packages got updated without having to boot up a test instance and diff it myself.

What is your primary use case for ClearScale Ubuntu 26.04 LTS?

I run a bunch of stateless REST APIs and web apps in AWS behind an Application Load Balancer. Everything lives in Auto Scaling Groups (ASGs). I use this AMI as the default base for those instances ...

What is your experience regarding pricing and costs for PubNub?

The setup cost is very low. Regarding pricing, when the data scales, the pricing increases gradually, but PubNub does not charge much in the initial phase.

What needs improvement with PubNub?

The subscription and the SDK part can be improved. If the client is offline and the application is killed, and the user comes back again, sometimes the subscription to the channel is missed, so tha...

What is your primary use case for PubNub?

We are mostly using PubNub for payload sending and for live chat. We are a mobile-based application with an admin side, so it's a live chat application. Whenever a user comes online or offline or s...

flow platform ACE-Salesforce CRM integration package vs PubNub

Comparisons

No data available

Compared 72% of the time

IoT aaS vs PubNub

Compared 28% of the time

More PubNub Competitors

Product Reports

Download ClearScale Ubuntu 26.04 LTS product report

AWS Marketplace

August 2026

Download PubNub product report

August 2026

Overview

ClearScale Ubuntu 26.04 LTS is tailored for professionals seeking a reliable operating system, offering a secure and efficient environment ready for diverse technological demands.

Designed to cater to advanced technical tasks, ClearScale Ubuntu 26.04 LTS delivers significant improvements in security, performance, and flexibility. With robust support and extensive customization features, it stands as a prime option for IT departments and developers requiring stable and scalable infrastructure solutions.

What are the standout features of ClearScale Ubuntu 26.04 LTS?

Security Enhancements: Implements advanced security protocols to protect data and systems.
Performance Optimization: Designed for optimal speed and efficiency across applications.
Customizable Environment: Offers extensive customization options to fit specific requirements.
Long-term Support: Provides continued support and updates, ensuring stability.
Scalable Solutions: Easily adapts to evolving technical environments and workloads.

What benefits or ROI can users expect from ClearScale Ubuntu 26.04 LTS?

Cost-Effectiveness: Reduces costs with open-source architecture and minimal licensing fees.
Improved Productivity: Enhances user productivity by delivering consistent performance.
Time Savings: Streamlines deployment processes, saving valuable time.
Reliability: Offers dependable performance with fewer disruptions.

In industries such as finance, healthcare, and tech, ClearScale Ubuntu 26.04 LTS proves beneficial. Organizations benefit from its scalability and security, supporting critical operations with reliability and allowing specialized applications to perform efficiently within secure frameworks.

ClearScale

PubNub delivers real-time communication solutions that enable seamless data transmission, catering to businesses requiring instant messaging and tracking capabilities. It supports developers with robust SDKs and multiple protocol integrations for scalable and reliable applications.

Specializing in real-time interactivity, PubNub offers a platform designed for scalability and efficiency. It provides a secure and globally distributed network to manage millions of messages per second with low latency. Businesses leverage PubNub for chat applications, live audience engagement, IoT device management, and more. The dynamic infrastructure facilitates rapid development and deployment, making it a preferred choice for developers seeking to enhance connectivity and data flow.

What are PubNub's most important features?

Real-Time Messaging: Instantly delivers messages to ensure immediate communication across platforms.
Presence Detection: Monitors online status, allowing apps to react dynamically to users coming online or going offline.
Stream Controller: Manages data streams independently across numerous channels for enhanced organization.
Data Encryption: Ensures secure data communication through end-to-end encryption for user privacy.
Push Notifications: Provides timely alerts to users, keeping them informed and engaged with minimal delay.

What are the benefits or ROI to consider?

Scalability: Supports rapid growth in user base without performance degradation.
Latency Reduction: Enhances user experience by minimizing delays in data transmission.
Cost Efficiency: Reduces infrastructure costs by pre-built integrations that cut down implementation time.
Security: Protects data integrity, fostering trust with users through robust encryption protocols.
Developer Support: Offers comprehensive documentation and SDKs for simplified development and integration.

In the finance industry, PubNub supports instant transaction alerts and stock trading applications by providing the real-time data processing that is crucial for market activities. E-commerce platforms use PubNub to handle customer queries and facilitate live support. Its implementation in IoT allows for efficient device monitoring and smart city applications. Gaming companies rely on PubNub for multiplayer matchmaking and live event streaming, creating immersive experiences for users worldwide.