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F5 BIG-IP [Private Offer Only] vs Zscaler Software [Private Offer Only] comparison

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Executive Summary

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

F5 BIG-IP [Private Offer Only]
Ranking in AWS Marketplace
159th
Average Rating
8.8
Number of Reviews
6
Ranking in other categories
No ranking in other categories
Zscaler Software [Private O...
Ranking in AWS Marketplace
458th
Average Rating
7.6
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Featured Reviews

Dimitrov Nikolay - PeerSpot reviewer
Tech Lead and Senior DevOps Engineer at a tech vendor with 10,001+ employees
Advanced automation and powerful traffic controls have improved application security
HTTP/2 and HTTP/3 support is something that definitely could be improved in F5 BIG-IP [Private Offer Only]. I mean HTTP/2 and HTTP/3 protocol support, as well as security for them too. For F5 BIG-IP [Private Offer Only] to have better support for them would include load balancing, but also better WAF (Web Application Firewall) support for these two protocols. Improving the mentioned HTTP/2 and HTTP/3 support and the GUI would be beneficial. If they improve those things and add machine learning and AI, I want it to have some kind of AI on the box because everyone is going to AI, and they have to add some AI security to be able to check the traffic using AI models. HTTP/2 and HTTP/3 protocol support, AI, the GUI to be changed, and inline AI where the device downloads pre-built AI models from a SaaS cloud to check the traffic for security is something I think is very needed because using AI models as a replacement for signatures will be better. I think WAF signatures are a thing of the past. I would also like to see HTTP/2 and HTTP/3 in the future as additional features, and anything else I would improve would definitely include HTTP/2 and HTTP/3.
Carlos Snel - PeerSpot reviewer
Executive Director at Aquila ICT Solutions
Zero trust security has provided flexible protection and inspects real-time traffic effectively
From my perspective, I think about Zscaler Software [Private Offer Only], not much could be improved. It is working very well. The only thing is about the POP presence, where you hook into a continent or country. In some countries, South America has some coverage, but not as much as for instance North America or Europe. If you talk with large enterprises or multinationals that are everywhere in the world present, they might need something in Africa. Africa is also a continent where you have more and more enterprises having their subsidiaries there. Africa is not covered very thoroughly, in my opinion. It only has South Africa with points of presence and then Egypt. It is either very up north or very down south. If you are in the middle of Africa, which is an extremely large continent, then you have delays and latencies. That is not very nice. However, that is not only counting for Zscaler Software [Private Offer Only]; this is also for all competitors. I am working with Cato Networks now for more than a year and the same story applies to them. I also know other competitors of Zscaler Software [Private Offer Only] which have even less coverage. It is not something that I think everyone is keen on to expand in Africa because they do not see much traffic. However, if you have multinationals that are operating in Africa, then you cannot offer very good quality service because you have large latency if they are in the middle of Africa. Not even in the middle of Africa; if you talk about under Morocco, then you either connect to Cairo or you connect to Spain. Spain is closest, but if you always have redundancy, and if Spain falls out for whatever reason, even though that is not happening much because the data centers are very stable, then you have an enormous latency going to Cairo. Coming with this to more North Africa, if you talk about Angola and Mozambique in the middle of Africa, then you do not have much choice. You always have a lot of latency there. That is unfortunate. On the technical terms, that is where I stand. I mentioned this before, and it is still the same. I think I talked with you a few years back about this; I think three or four years ago. I mentioned exactly this topic then, and it is still the same. The other thing is, I think in terms of software, they are doing their best. They are buying in firms and buying in solutions, so they are expanding, and that is fine. I would rather say to Zscaler Software [Private Offer Only] to have better customer service because Zscaler Software [Private Offer Only], even with large enterprises and huge companies that I work for, they notice that Zscaler Software [Private Offer Only] service management is different. They are very big and they have less attention to client matters. If that would improve, it would be the best for Zscaler Software [Private Offer Only] to have better customer success managers, but more attention to clients and more direct interface to the deep core of the company for client matters if they have questions or specific things that they do not currently have. If I have something with the client, I have sometimes to escalate to the vice president that I know because I worked with him before, and that is unfortunate. That should not be necessary to go that route. You should have things arranged directly with an account manager or customer success manager of your client if you have problems, or at least have responses saying, this is impossible, we cannot do that because of this, this, this, whatever. At least you should have an answer. I think in the future, everyone in the branch is focusing on AI and quantum computing as a mix. I think on that end, everyone in the domain is working hard to find the best solutions against those two challenges. I think Zscaler Software [Private Offer Only] is doing their best as well there. That is the challenge for the upcoming years, to get the best answers to it. Eventually, they will compete with the same; fight it back with the same power. That means also with quantum computing or specially designed AI to attack back when attackers are attacking. I am not the genius saying that there will be a sort of war game coming up in the future in this domain. However, they are working on it, as all the others are doing, and I think that is absolutely the focus for the coming years because that is where everyone has concern about.

Quotes from Members

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

Pros

"The customization that iRule gives is far beyond what is available in the market when comparing to their competitors including Radware, Array, and other vendors."
"For performance, reliability, and flexibility, F5 BIG-IP [Private Offer Only] is significantly ahead."
"F5 BIG-IP [Private Offer Only] data plane is very powerful; traffic is processed very quickly."
"F5 BIG-IP [Private Offer Only] is the best option on the market without any question."
"The best features for me in the product are that geotagging is very nicely incorporated and rule creation for incoming traffic is very user-friendly."
"F5 BIG-IP [Private Offer Only] is an application delivery controller that does what it says on the tin, and we use it as a firewall, routing device, WAF, and more, leveraging a full set of its capabilities."
"Zscaler Software [Private Offer Only] itself, I think it is pretty good and I only get compliments from clients that are using it after the implementation; they like it."
"I use Zscaler Software [Private Offer Only]'s real-time traffic inspection feature and find it helpful."
"Zscaler Software is very beneficial for my clients, reducing time by at least more than 50%, improving specific metrics through encrypted threat detection, increasing productivity, and reducing the workload of the analyst so they can respond faster."
 

Cons

"I think F5 BIG-IP [Private Offer Only] can be improved, particularly on the metric side."
"One of the areas for improvement in F5 BIG-IP [Private Offer Only] is the licensing part, as the cost is comparatively very high."
"I am not sure whether putting all eggs in one basket is a good thing."
"I would appreciate improvements in the UI because F5 BIG-IP [Private Offer Only]'s traditional UI differs from others that have made their interfaces more user-friendly; F5 BIG-IP [Private Offer Only]'s approach is still traditional, with upgrades that are still manual, while competition has made upgrades easy with one-click processes."
"F5 BIG-IP [Private Offer Only] is expensive; it is very expensive, but they are the leader, so everyone buys F5 BIG-IP [Private Offer Only]."
"I see a drawback with F5 BIG-IP [Private Offer Only]: pools and nodes are two features that are very similar and shouldn't be divided like that, because they are almost the same thing."
"I would rather say to Zscaler Software [Private Offer Only] to have better customer service because Zscaler Software [Private Offer Only], even with large enterprises and huge companies that I work for, they notice that Zscaler Software [Private Offer Only] service management is different."
"Regarding Zscaler Software [Private Offer Only], to be honest, we do not like it."
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Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise1
Large Enterprise5
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for F5 BIG-IP [Private Offer Only]?
My thoughts on the pricing, setup cost, and licensing part of F5 BIG-IP [Private Offer Only] are that for some markets, F5 prices are not competitive with what the competition is offering; although...
What needs improvement with F5 BIG-IP [Private Offer Only]?
I would appreciate improvements in the UI because F5 BIG-IP [Private Offer Only]'s traditional UI differs from others that have made their interfaces more user-friendly; F5 BIG-IP [Private Offe...
What is your primary use case for F5 BIG-IP [Private Offer Only]?
My use cases for F5 BIG-IP [Private Offer Only] include working on F5 ASM, and I feel the differentiator is their iRule and the detection capability, which will be differentiators compared to other...
What needs improvement with Zscaler Software [Private Offer Only]?
One area for improvement for Zscaler Software is that they should have their dependency on AI validated and verified. Because if they are a service provider, they are doing a good job, but they hav...
What is your primary use case for Zscaler Software [Private Offer Only]?
Zscaler Software provides cloud security as the use case for my clients.
 

Overview

Find out what your peers are saying about F5 BIG-IP [Private Offer Only] vs. Zscaler Software [Private Offer Only] and other solutions. Updated: October 2026.
921,523 professionals have used our research since 2012.