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Apache Kafka on Confluent Cloud vs FreePBX comparison

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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
4.7
Confluent Cloud's Kafka offers cost-effective scalability and reliability, enhancing data processing and schema management despite higher costs.
Sentiment score
3.4
FreePBX reduces costs and increases satisfaction with an unlimited usage model, saving users significantly compared to Cisco systems.
Returns depend on the application you deploy and the amount of benefits you are getting, which depends on how many applications you are deploying, what are the sorts of applications, and what are the requirements.
Chief Architect at a financial services firm with 10,001+ employees
Money was saved, as opposed to taking a subscription-based model for each of the extensions.
Tech Lead at Vindaloo Softtech Pvt Ltd
I have seen a return on investment with FreePBX; for example, the musical instruments group saved over $30,000 a year by moving from Cisco to FreePBX for their licensing.
Sr Voip and Call center engineer at Superdave LLC
 

Customer Service

Sentiment score
6.8
Apache Kafka support on Confluent Cloud is praised for timely and competent assistance, with high user satisfaction ratings.
Sentiment score
4.1
FreePBX offers paid and community support, with forums and purchasable hours, praised for responsiveness and technical assistance.
I was getting prompt responses, and it was nicely handled regarding the support.
Lead Software Engineer at a tech vendor with 10,001+ employees
I would rate them eight if 10 was the best and one was the worst.
Chief Architect at a financial services firm with 10,001+ employees
The community-based support was good, and there is some paid support as well from Sangoma.
Tech Lead at Vindaloo Softtech Pvt Ltd
If I really get in a pickle over something, I can purchase support hours and get an answer.
Sr Voip and Call center engineer at Superdave LLC
Tech support for FreePBX, I would rate it six to seven out of ten.
Senior Staff Engineer at Nagarro
 

Scalability Issues

Sentiment score
5.8
Apache Kafka on Confluent Cloud is scalable and flexible, though some users report reliability issues when scaling.
Sentiment score
3.8
FreePBX offers robust scalability for IP PBX, but struggles with multi-tenancy, minor deployments, and limited third-party integrations.
According to me, it is quite scalable in terms of all the data it can handle and stream.
Lead Software Engineer at a tech vendor with 10,001+ employees
It does have a scalability issue with multi-tenancy.
Tech Lead at Vindaloo Softtech Pvt Ltd
The big one is 400 users and 350 simultaneous calls.
Sr Voip and Call center engineer at Superdave LLC
In FreePBX, there is no API exposed as far as I understand.
Senior Staff Engineer at Nagarro
 

Stability Issues

Sentiment score
6.0
Apache Kafka on Confluent Cloud is stable and reliable, with occasional issues in high traffic and dashboard access.
Sentiment score
7.7
FreePBX is stable, reliable, and highly compatible with Linux, offering scalability, call recording, and requiring minimal maintenance.
FreePBX is stable in my experience; I've run into clients who run the server for years without anybody touching them.
Sr Voip and Call center engineer at Superdave LLC
FreePBX has some pros and cons like every product. For pros, FreePBX is very scalable, very flexible, and open source.
Senior Staff Engineer at Nagarro
FreePBX is stable in most cases.
Project Manager and Full Stack Software Developer at a tech services company with 11-50 employees
 

Room For Improvement

Apache Kafka on Confluent Cloud needs improvements in integrations, user interface, cost, monitoring, and configuration for enhanced functionality.
FreePBX should improve third-party phone support, user interface, security, call flow design, and add a live call monitoring dashboard.
If it were easier to configure clusters and had more straightforward configuration, high-level API abstraction in the APIs could improve it.
Partner at SouJava
Regarding additional improvements, I would say probably around error handling, where when we encounter errors specific to our response structures and everything, or the tables or anything of that nature, it would be better if we were prompted with better error handling mechanisms.
Lead Software Engineer at a tech vendor with 10,001+ employees
Observability and monitoring are areas that could be enhanced.
Chief Architect at a financial services firm with 10,001+ employees
FreePBX can be improved by offering users the ability to design a call flow more easily through a drag and drop interface.
Project Manager and Full Stack Software Developer at a tech services company with 11-50 employees
I have needed to access the command line interface and run commands to complete tasks.
Vo Ip Sip Engineer at Concentric Media Sdn Bhd
Security would be the main feature that I wish was better because the FreePBX box can get hacked quickly.
Tech Lead at Vindaloo Softtech Pvt Ltd
 

Setup Cost

Enterprise users of Apache Kafka on Confluent Cloud find pricing accessible but warn of potential cost surges with added features.
FreePBX offers free downloads and competitive module pricing, making it an affordable choice for enterprises compared to competitors.
I thought Confluent would stop me when I crossed the credits, but it did not, and then I got charged.
Lead Software Engineer at a tech vendor with 10,001+ employees
The prices for FreePBX are fair; they are not bad compared to other brands like Cisco.
Operations Manager at astron computers limited
My experience with pricing, setup cost, and licensing is that we only need to pay for the server through DigitalOcean billing.
Tech Lead at Vindaloo Softtech Pvt Ltd
We originally chose monthly pricing; in retrospect I would choose the annual plan.
Works at a tech services company with 1,001-5,000 employees
 

Valuable Features

Apache Kafka on Confluent Cloud enables scalable, efficient real-time data processing with seamless platform integration and advanced management features.
FreePBX offers extensible, user-friendly communication tools, featuring customization, community support, and integration for call centers and small businesses.
These features are important due to scalability and resiliency.
Chief Architect at a financial services firm with 10,001+ employees
The Kafka Streams API helps with real-time data transformations and aggregations.
Partner at SouJava
The best features Apache Kafka on Confluent Cloud offers would be the connection with various external systems through various languages such as Python and C#.
Lead Software Engineer at a tech vendor with 10,001+ employees
FreePBX helps my team operate efficiently; it allows me to grant access to non-experienced, non-technical colleagues to do their jobs, such as adding new extensions, adding new trunks, or managing some of the voice features, which helps a lot to distribute the workloads, speeds up the process, and visualizes the system and its state for the management team, including non-technical persons.
Senior Cloud Engineer at Globant
This is fantastic because it provides proactive support from the customer 24 into 7 across the world.
Senior Staff Engineer at Nagarro
FreePBX has positively impacted my organization because it allows quick setup for a small call center and is easy to use.
Project Manager and Full Stack Software Developer at a tech services company with 11-50 employees
 

Categories and Ranking

Apache Kafka on Confluent C...
Average Rating
8.6
Reviews Sentiment
5.6
Number of Reviews
14
Ranking in other categories
Streaming Analytics (16th)
FreePBX
Average Rating
8.4
Reviews Sentiment
4.5
Number of Reviews
11
Ranking in other categories
Hosted and Cloud Based VoIP (1st)
 

Mindshare comparison

Apache Kafka on Confluent Cloud and FreePBX aren’t in the same category and serve different purposes. Apache Kafka on Confluent Cloud is designed for Streaming Analytics and holds a mindshare of 1.3%, up 0.5% compared to last year.
FreePBX, on the other hand, focuses on Hosted and Cloud Based VoIP, holds 3.6% mindshare, up 0.1% since last year.
Streaming Analytics Mindshare Distribution
ProductMindshare (%)
Apache Kafka on Confluent Cloud1.3%
Databricks7.4%
Apache Flink6.7%
Other84.6%
Streaming Analytics
Hosted and Cloud Based VoIP Mindshare Distribution
ProductMindshare (%)
FreePBX3.6%
RingCentral Office8.4%
Grasshopper7.2%
Other80.8%
Hosted and Cloud Based VoIP
 

Featured Reviews

AF
Lead Software Engineer at a tech vendor with 10,001+ employees
Has unified log streams from multiple systems and accelerated issue tracking through streamlined setup
I think Apache Kafka on Confluent Cloud can be improved by probably working more around Confluent or the tool. In my opinion, it should utilize the response structures in a better way or be able to detect if there is any variable or if there is any data structure that is mismatched, as it would be easier than us manually having to put in the exact name in order for it to match the response. Regarding additional improvements, I would say probably around error handling, where when we encounter errors specific to our response structures and everything, or the tables or anything of that nature, it would be better if we were prompted with better error handling mechanisms. I do not think there are any other improvements Apache Kafka on Confluent Cloud needs, aside from error handling and response structures.
DR
Sr Voip and Call center engineer at Superdave LLC
Migration projects have cut licensing costs and now support flexible call flows and hot standby
FreePBX can be improved as they come out with a new version every year or so. Their current version is FreePBX 17. The user community and the FAQ are great; you can search for just about anything you want to do on FreePBX and they're getting new AI engines and new text to speech engines from third party vendors all the time. So it's a very rich community. Sometimes the security is a bit odd with FreePBX, but security is a bit odd overall, so I don't know if that's a valid concern. I appreciate it; it's a good environment. Sangoma is the owner of the system. If I ever get stuck on something, and it doesn't happen very often, I can call and get help from Sangoma, and sometimes they want me to pay for it. It's fine if that's what it takes, but there's great support.
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Top Industries

By visitors reading reviews
Construction Company
14%
Financial Services Firm
13%
Manufacturing Company
9%
Comms Service Provider
9%
Construction Company
18%
Comms Service Provider
17%
Outsourcing Company
10%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise3
Large Enterprise8
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise1
Large Enterprise3
 

Questions from the Community

What needs improvement with Apache Kafka on Confluent Cloud?
I think Apache Kafka on Confluent Cloud can be improved by probably working more around Confluent or the tool. In my opinion, it should utilize the response structures in a better way or be able to...
What is your primary use case for Apache Kafka on Confluent Cloud?
I have used Apache Kafka on Confluent Cloud for one of my projects with regard to log monitoring. My main use case for Apache Kafka on Confluent Cloud in that project was mainly streaming of the lo...
What advice do you have for others considering Apache Kafka on Confluent Cloud?
My advice to others looking into using Apache Kafka on Confluent Cloud is that it is easier and has a low learning curve. If there is any use case regarding streaming, I would suggest starting off ...
What is your experience regarding pricing and costs for FreePBX?
The prices for FreePBX are fair; they are not bad compared to other brands like Cisco. The price is very good.
What needs improvement with FreePBX?
I am not aware at the moment of FreePBX's user-friendly GUI in terms of simplifying administrative tasks, as I do not have the data at hand. We have not implemented FreePBX's IVR feature yet. I am ...
What is your primary use case for FreePBX?
We do resell Dell products. We are actually resellers and we resell their laptops and desktops, even servers at times. We do have hands-on experience working with Dell technologies. We do installat...
 

Overview

Find out what your peers are saying about Databricks, Microsoft, Apache and others in Streaming Analytics. Updated: October 2026.
920,336 professionals have used our research since 2012.