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Kali Linux vs PostgreSQL on Ubuntu comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
5.7
Kali Linux improves security and efficiency with low-cost tools, offering significant cost savings and optimized resource management.
Sentiment score
6.6
PostgreSQL on Ubuntu offers cost savings, efficiency, and easy deployment, making it a preferred choice for enterprises.
Integrating Kali Linux with DevOps tools has resulted in reduced operational costs due to automated test cases, making it a worthwhile investment with significant returns by decreasing the attack surface area and the frequency of attack incidents.
SWE-1 at a tech vendor with 10,001+ employees
If we had installed it on-premises or through other means, it would have incurred significant money and effort to create the VMs, deploy it on machines, and then delete and format it after use.
Cloud Security Architect at a tech services company with 10,001+ employees
Kali Linux is a time-saving and cost-saving solution.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
We cut database infrastructure costs by roughly sixty to seventy percent by moving away from managed databases to using hosted PostgreSQL on Ubuntu VPS instances.
CEO at Grant Corporation
Since there are no upfront licensing fees, the ROI is increased with a scalable system without exponential cost growth.
Senior Software Developer at hireHQ
Think about if you are in a different geographic location and your cluster is hosted in two different geographic locations, maybe one in South Pacific and one in Western Europe. In both cases, if write transactions are happening, this is a good way to basically order the transactions so that the eventual data consistency is there.
Specialist Programmer L3 at Infosys
 

Customer Service

Sentiment score
5.0
Kali Linux support relies on community documentation and forums, offering effective assistance despite slower response times compared to commercial options.
Sentiment score
5.7
PostgreSQL customer service on Ubuntu is responsive and often unnecessary due to comprehensive documentation and community resources.
Since most of the tools and other things are community-based, the documentation and other community support are very good.
Cloud Security Architect at a tech services company with 10,001+ employees
I was able to solve the problems I was experiencing.
Product security engineer at a tech vendor with 10,001+ employees
If we compare support from Microsoft, it is not the same because Kali Linux is open source and we are not paying any license cost.
Assistant Consultant at a tech services company with 11-50 employees
PostgreSQL on Ubuntu also has some of the most detailed technical documentation in existence.
Agriculturalist/Founder of France Farms at France Farms
Community support is usually helpful in addressing queries and finding solutions to various scenarios.
Director IT at Artizense Hub
When I needed help with my vector search, I contacted them, and they provided substantial assistance.
AI Engineer at a educational organization with 51-200 employees
 

Scalability Issues

Sentiment score
7.4
Kali Linux excels in diverse virtual environments, offering scalability and adaptability on platforms like VPS and Raspberry Pi.
Sentiment score
7.0
PostgreSQL on Ubuntu offers robust vertical scalability and efficient complex data handling, though horizontal scaling requires additional effort.
You can use it on cloud, VPS, and on-premises.
Sr. Project Analyst [Cybersecurity] at a consultancy with 10,001+ employees
I would describe Kali Linux's scalability as very scalable because I can deploy it on a range of different machines, whether that is my laptop or using maybe Raspberry Pi or Android.
Cloud Ops Lead at a tech vendor with 10,001+ employees
We can include the GitHub repository, install Python code, and create our own machine learning model in Kali Linux.
Assistant Consultant at a tech services company with 11-50 employees
Read scaling is supported natively; PostgreSQL enables statement replication, allowing us to spin up read replicas on Ubuntu to distribute read-heavy workloads, which is fantastic.
CEO at Grant Corporation
The scalability of PostgreSQL on Ubuntu is very good because complex joins are performed smoothly and efficiently.
Senior Software Developer at hireHQ
I do not see any limits in scalability for PostgreSQL on Ubuntu; it scales well without constraints.
Director IT at Artizense Hub
 

Stability Issues

Sentiment score
8.0
Kali Linux is praised for stability, reliability, and regular updates, excelling in virtualization with strong maintenance by Offensive Security.
Sentiment score
8.3
PostgreSQL on Ubuntu is valued for stability, reliability, performance, and seamless integration, crucial for diverse and secure environments.
Due to the huge user base that uses it, it is kept up to date regularly.
Cloud Ops Lead at a tech vendor with 10,001+ employees
Kali Linux is stable for my use cases, though not the latest version.
Product security engineer at a tech vendor with 10,001+ employees
Kali Linux is very stable for my needs.
Consultant at Cognizant
It also guarantees asset compliance; after atomicity, consistency, isolation, and durability, it means that even if the power goes out during a transaction, PostgreSQL on Ubuntu ensures that the data is 100 percent saved or rolled back.
Agriculturalist/Founder of France Farms at France Farms
PostgreSQL on Ubuntu is quite stable.
Specialist Programmer L3 at Infosys
PostgreSQL on Ubuntu is handling my production infrastructures very well and it is going very good.
Manager Dev Ops at a tech services company with 10,001+ employees
 

Room For Improvement

Kali Linux could improve with a user-friendly GUI, enhanced support, better documentation, AI integration, and optimized VM images.
PostgreSQL on Ubuntu needs enhancements in speed, usability, AI integration, and advanced tools for better performance and user experience.
If real-time customized port scanning can be added, for example, instead of a default port such as 8080 or 443, if we can use a customized port such as 9876, that capability would be great.
Senior Technical Manager at a tech vendor with 10,001+ employees
I face significant challenges with Kali Linux regarding a major issue with the Grub loader becoming corrupted, which makes it very difficult to recover data.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
If there were video courses attached to how to safely use it, especially for absolute beginners with no previous experience using Linux operating systems, I think that could be very useful.
Cloud Ops Lead at a tech vendor with 10,001+ employees
PostgreSQL on Ubuntu is very stable in terms of performance and query optimization.
Software Engineer at a university with 501-1,000 employees
Maybe it makes more sense to use AI for configuration in future updates of PostgreSQL on Ubuntu so that the database is automatically optimized for the best performance for a given hardware.
Head of IT at Givo Pvt Ltd
I would also appreciate the ability to use the EXPLAIN ANALYZE tool.
Consultant at a tech vendor with 10,001+ employees
 

Setup Cost

Kali Linux is cost-effective and appealing for enterprises with its open-source, free access, and comprehensive tool suite.
PostgreSQL on Ubuntu provides a cost-effective, open-source database solution, significantly reducing licensing and operational costs for enterprises.
I simply create a VM, so there are no costs involved.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
We do not need to pay anything.
Assistant Consultant at a tech services company with 11-50 employees
My experience with pricing, setup costs, and licensing for Kali Linux has been positive, as it operates under an open-source model.
SWE-1 at a tech vendor with 10,001+ employees
There was no pricing and cost involved in using PostgreSQL on Ubuntu.
Software Engineer at a university with 501-1,000 employees
Now we are running multiple projects on a single Ubuntu VPS with PostgreSQL for around twenty to forty dollars a month total.
CEO at Grant Corporation
Because it is an open source solution, we did not have acquisition or usage costs for this solution.
Analista de Infraestrutura de TI at a tech vendor with 11-50 employees
 

Valuable Features

Kali Linux offers pre-installed security tools, user-friendly interface, and customization, ideal for ethical hacking and penetration testing.
PostgreSQL on Ubuntu is a cost-effective, adaptable open-source database with strong performance, security, and community support.
Kali Linux has positively impacted my organization by improving efficiency in penetration testing; its open-source nature permits extensive customization and inclusion of numerous comprehensive pre-installed tools, contributing to a secure network environment with effective monitoring of network applications.
SWE-1 at a tech vendor with 10,001+ employees
A unique and really helpful feature of Kali Linux, compared to other operating systems, is that many of the offensive security tools are already pre-configured and pre-installed.
Product security engineer at a tech vendor with 10,001+ employees
Kali Linux positively impacts my organization by allowing us to monitor changes and security posture for the company.
Consultant at Cognizant
One of the most important points about PostgreSQL on Ubuntu is that it is free.
Head of IT at Givo Pvt Ltd
Overall, PostgreSQL on Ubuntu is a powerful and reliable database management system; it is easy to use and good for students who want to move beyond basic and industry-level skills.
Database developer at a university with 501-1,000 employees
Any open-source software allows me to look into the code, understand the logic, and mold my code according to it, and it will work perfectly rather than proprietary solutions where I am very much dependent on the vendor and have to wait for their next release to fix things.
Manager Dev Ops at a tech services company with 10,001+ employees
 

Categories and Ranking

Kali Linux
Ranking in Operating Systems (OS) for Business
11th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
26
Ranking in other categories
No ranking in other categories
PostgreSQL on Ubuntu
Ranking in Operating Systems (OS) for Business
15th
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
17
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Operating Systems (OS) for Business category, the mindshare of Kali Linux is 4.2%, up from 2.3% compared to the previous year. The mindshare of PostgreSQL on Ubuntu is 0.9%, up from 0.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
Kali Linux4.2%
PostgreSQL on Ubuntu0.9%
Other94.9%
Operating Systems (OS) for Business
 

Featured Reviews

Ciyagi Ciyagi - PeerSpot reviewer
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
Runs efficiently across devices and streamlines penetration testing workflows
Kali Linux could be improved by including more tools. I would personally like to see improvements in Kali Linux, particularly regarding Grub issues that sometimes occur when installing the VM. Additionally, I have experienced problems when updating Kali Linux from a higher version to a lower version, which resulted in crashes. These Grub issues should be resolved. I face significant challenges with Kali Linux regarding a major issue with the Grub loader becoming corrupted, which makes it very difficult to recover data.
MG
CEO at Grant Corporation
Consistent use of flexible data and solid transactions has reduced costs and simplified projects
PostgreSQL on Ubuntu could be improved with easier out-of-the-box configuration. The default settings for PostgreSQL on a fresh Ubuntu install are very conservative. Things such as shared buffers and work memory are too low for any real production workloads, and you have to know how to go in and tune it manually. A smart default configuration wizard during installation that detects hardware and suggests settings would save a lot of junior developers from performance headaches. That is important. Built-in connection pooling is another area; PostgreSQL does not handle large numbers of concurrent connections well natively. You end up needing to set up PG Bouncer separately, which is another tool to learn, configure, and maintain. Having a lightweight connection pooler built into the core installation would be a real quality-of-life improvement. Additionally, a better built-in monitoring UI would help. Primarily, if you are working with Ubuntu, you are largely working with PostgreSQL on the command line and installing third-party tools such as pgAdmin or Adminer. A lightweight built-in web dashboard for basic health monitoring would improve projects significantly. Finally, upgrades between major versions and smaller versions should be a lot easier as well. None of these are deal-breakers; they are just nice to have improvements.
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Top Industries

By visitors reading reviews
University
12%
Construction Company
12%
Comms Service Provider
11%
Educational Organization
8%
Construction Company
28%
Financial Services Firm
10%
Comms Service Provider
10%
Outsourcing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise2
Large Enterprise17
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise10
 

Questions from the Community

What is your experience regarding pricing and costs for Kali Linux?
It is open source. We do not need to pay anything. Most of the tools are open source, so we do not need to pay for licensing. There is minimum cost we have to pay, and based on our expertise, we ca...
What needs improvement with Kali Linux?
Kali Linux is an operating system plus tool, and it is a Linux-based product, so if we need to do anything for Windows, we do not have an option to use the same type of tool. If Kali could provide ...
What is your primary use case for Kali Linux?
I use Kali Linux for vulnerability testing, sandbox analysis, red team penetration testing, and checking vulnerabilities in the network, checking vulnerabilities with users, and red teaming proacti...
What is your experience regarding pricing and costs for PostgreSQL on Ubuntu?
My experience with pricing, setup cost, and licensing for PostgreSQL on Ubuntu is that everything is good.
What needs improvement with PostgreSQL on Ubuntu?
I chose a nine out of ten for PostgreSQL on Ubuntu because everything is good, but I need it to be easier to understand and learn. The initial stage is a bit tough, and we do not have adequate sour...
What is your primary use case for PostgreSQL on Ubuntu?
My main use case for PostgreSQL on Ubuntu is to work with the database, so all the fields should be aligned. When we scale the projects, it helps us to do better compared to other software. Postgre...
 

Overview

Find out what your peers are saying about Kali Linux vs. PostgreSQL on Ubuntu and other solutions. Updated: June 2026.
900,644 professionals have used our research since 2012.