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F5 BIG-IP Local Traffic Manager (LTM) vs Fortinet FortiADC vs VMWare Avi Load Balancer 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
6.9
Users experienced mixed returns from F5 BIG-IP, praising deployment and security, despite some criticisms of pricing and cloud transitions.
Sentiment score
5.2
Fortinet FortiADC is chosen for reliable load management, security, and support, offering moderate ROI and essential performance.
Sentiment score
4.5
Many users see quick ROI with VMWare Avi Load Balancer, but results vary due to differing use cases.
The major return on investment is the security of our data.
IT Manager at Chong Hua Hospital
The alert system is efficient, sending alerts within a fraction of a second if any power issues arise.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Customer Service

Sentiment score
6.7
Customer service is generally praised for professionalism and expertise, but some experience delays and inconsistent response quality.
Sentiment score
6.2
Fortinet FortiADC customer service is praised for effective support but varies in response time and relies on ticket prioritization.
Sentiment score
6.3
VMWare Avi Load Balancer's customer service is efficient but experiences variability in support ticket volume and user interaction.
I would rate the technical support of F5 BIG-IP Local Traffic Manager (LTM) nine out of ten.
IT Manager at Chong Hua Hospital
Overall, my experience with F5 is very good compared to Radware.
Project Manager at IBM
The support team is knowledgeable and efficiently assists with automation and configuration problems.
Security Network Architect at Inmac
On a scale from one to ten, the support deserves an eight.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
The service is helpful yet not excellent.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Scalability Issues

Sentiment score
7.4
F5 BIG-IP LTM offers scalable solutions with flexible deployment, efficiently managing large environments, preferred for modular growth and adaptability.
Sentiment score
7.5
Fortinet FortiADC provides scalable solutions with virtual and cloud options, though performance varies by model and infrastructure needs.
Sentiment score
7.6
VMWare Avi Load Balancer is praised for efficiency and scalability, despite some challenges due to specific infrastructure.
FortiGSLB cloud integrations provide maximum service availability and some flexible licensing options.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
It is scalable for some versions, however, as components reach their end of support, upgrades are necessary to maintain scalability.
Security Network Architect at Inmac
Scalability-wise, VMWare Avi Load Balancer is good.
Trainer/Consultant at Koenig Solutions Pvt. Ltd.
 

Stability Issues

Sentiment score
8.0
F5 BIG-IP LTM is stable and resilient, with users rating its reliability high despite occasional hardware or update issues.
Sentiment score
8.2
Fortinet FortiADC is praised for stability, reliable operation, effective support, and minor issues resolved through firmware updates.
Sentiment score
7.9
VMWare Avi Load Balancer is stable and efficient, ideal for small to medium businesses, with some concerns under heavy loads.
Overall, it has been good; in the past it was very good, and now it is still performing well.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
The support system is reliable when issues like automation or configuration arise.
Security Network Architect at Inmac
From a stability point of view, VMWare Avi Load Balancer is stable.
Trainer/Consultant at Koenig Solutions Pvt. Ltd.
 

Room For Improvement

F5 BIG-IP LTM faces criticism for high costs, inflexible licensing, complex management, and needing improved UI, synchronization, and security.
Fortinet FortiADC needs advancements in algorithms, UI, support, documentation, scalability, features, pricing, licensing, performance, cloud, and AI integration.
VMWare Avi Load Balancer requires better pricing, documentation, security features, integration, analytics, and interoperability with hyperscale and Kubernetes.
The pricing of F5 BIG-IP Local Traffic Manager (LTM) is on the higher side compared to competitors, but it is worth it.
Project Manager at IBM
Fortinet has been a pioneer for enterprise solutions, such as firewalls, SASE, ZTNA, and SD-WAN solutions, and they are in a leader quadrant.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
The limitation of managing all components and the differing versions pose challenges.
Security Network Architect at Inmac
If I need design help, they do not assist; they say it is a design issue they cannot support, and I must approach the system integrator.
Senior Network Engineer at SP SYSNET PTE. LTD.
The documentation needs to improve, as it was really handy a couple of years back.
Trainer/Consultant at Koenig Solutions Pvt. Ltd.
 

Setup Cost

F5 BIG-IP LTM is costly but offers performance benefits, with various licensing options and potential discounts to match competitors.
Fortinet FortiADC is affordable compared to competitors, with flexible licensing, varying costs, and potential discounts based on configurations.
VMware Avi Load Balancer is cost-effective with flexible pricing, differing experiences, and generally positive feedback on affordability.
This solution is quite expensive compared to Kemp.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Valuable Features

F5 BIG-IP LTM provides efficient traffic management, security features, and customization options with a user-friendly interface and robust performance.
Fortinet FortiADC excels in load balancing, security, and ease of integration, offering scalable, reliable, and comprehensive traffic management solutions.
The VMWare Avi Load Balancer excels in usability, integration, analytics, and scalability, outperforming competitors in load balancing and application debugging.
The impact of SSL offloading on reducing server load and latency is very much positive because whatever traffic we receive, we encrypt at our F5 BIG-IP Local Traffic Manager (LTM) level, which has definitely reduced the additional load and SSL decryption load on the servers, so it has very much helped us and it is very smooth; it will not take much time and will not impact our regular traffic.
Project Manager at IBM
One of the most beneficial features of F5 BIG-IP Local Traffic Manager (LTM) is its ability to identify compromised traffic and its capabilities in authentication.
IT Manager at Chong Hua Hospital
When integrated with FortiAnalyzer, it has much more significance.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
I use server load balancing and employ layer seven features, which provide more granular traffic shaping and detailed logs.
Senior Network Engineer at SP SYSNET PTE. LTD.
FortiADC provides load-balancing capabilities needed for integration with other Fortinet platforms.
Security Network Architect at Inmac
The features I find most valuable in VMware Avi Load Balancer are the load balancing part and the WAF part.
Trainer/Consultant at Koenig Solutions Pvt. Ltd.
 

Mindshare comparison

As of February 2026, in the Application Delivery Controllers (ADC) category, the mindshare of F5 BIG-IP Local Traffic Manager (LTM) is 14.9%, down from 15.4% compared to the previous year. The mindshare of Fortinet FortiADC is 9.8%, up from 9.8% compared to the previous year. The mindshare of VMWare Avi Load Balancer is 5.4%, up from 4.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Delivery Controllers (ADC) Market Share Distribution
ProductMarket Share (%)
F5 BIG-IP Local Traffic Manager (LTM)14.9%
Fortinet FortiADC9.8%
VMWare Avi Load Balancer5.4%
Other69.9%
Application Delivery Controllers (ADC)
 

Featured Reviews

Bonieber  Orofeo - PeerSpot reviewer
IT Manager at Chong Hua Hospital
Identifying compromised traffic and securing data has been a significant advantage
One of the most beneficial features of F5 BIG-IP Local Traffic Manager (LTM) is its ability to identify compromised traffic and its capabilities in authentication. Additionally, the security aspect of it provides a significant advantage as it helps us secure our data, which is a major investment and benefit for us. Before using this system, we had difficulties in storing our data and managing the traffic that comes in and out.
GANESAN K - PeerSpot reviewer
Senior Technical Engineer at Safezone Secure Solutions Private Limited
Has supported load balancing for medical applications and could benefit from more custom configuration options
Some customers need custom management for handling their applications across the servers. Instead of having a predefined solution, if we had space for custom-based algorithms to load balance the traffic, it would be better. We have faced such cases with A10, where we can leverage many custom scripts and do much more. Even though A10 primarily focuses on SMBs, they have also ventured into the enterprise market. Fortinet has been a pioneer for enterprise solutions, such as firewalls, SASE, ZTNA, and SD-WAN solutions, and they are in a leader quadrant. Therefore, they should have more options. From a pricing perspective, it is expensive.
Vishal Bhatia - PeerSpot reviewer
Trainer/Consultant at Koenig Solutions Pvt. Ltd.
Analytics dashboard has provided deep visibility and delivers reliable load balancing and WAF protection
Regarding the benefit of VMWare Avi Load Balancer's WAF protection, I think the heuristics are pretty common. I do not come across many trainings for the WAF part, but once in a while. I cannot comment much on whether organizations are using it or not. In terms of VMWare Avi Load Balancer's multi-cloud capability, I have not come across many organizations using it across the different platforms. It is primarily used in the VMware context only. I have not seen anyone using it purely from a Linux or AWS or Azure perspective. Most of the organizations I come across are primarily using it from the VMware side. As for the API-driven infrastructure as code feature of VMWare Avi Load Balancer, because I am not from the developer side, I think that is more for the developers or maybe for integrating some new solutions and digging something deeper into it. That is quite handy. Regarding ease of use with VMWare Avi Load Balancer, that is pretty okay. For implementation, people find it quite okay to implement. There is nothing much from the implementation side. I think VMWare should promote their product more, particularly from the VMWare Avi Load Balancer side. It may be promoted a little bit more. Apart from Avi, most of those are already well-known. I would rate this review an 8 out of 10.
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Computer Software Company
9%
Government
8%
Manufacturing Company
7%
Computer Software Company
10%
Financial Services Firm
9%
Government
8%
Energy/Utilities Company
6%
Financial Services Firm
20%
Comms Service Provider
12%
Computer Software Company
10%
Government
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business62
Midsize Enterprise32
Large Enterprise85
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise4
Large Enterprise7
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise3
Large Enterprise4
 

Questions from the Community

What needs improvement with F5 BIG-IP?
The pricing of F5 BIG-IP Local Traffic Manager (LTM) is on the higher side compared to competitors, but it is worth it.
What is your primary use case for F5 BIG-IP?
Our main use cases involve multiple applications, so we are using F5 BIG-IP Local Traffic Manager (LTM) services, and...
Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...
Do you recommend Fortinet FortiADC?
I recommend Fortinet FortiADC. My experience with Fortinet has been very positive. Our company has been using it for ...
What do you like most about Fortinet FortiADC?
The user interface is very easy and integrates with Sandbox easily.
What do you like most about Avi Networks Software Load Balancer?
The solution has simplified our network infrastructure management.
What needs improvement with Avi Networks Software Load Balancer?
The network analytics and monitoring features are not effective. The product does not provide deep troubleshooting fe...
 

Also Known As

F5 BIG-IP, BIG-IP LTM, F5 ASM, Viprion, F5 BIG-IP Virtual Edition , Crescendo Networks Application Delivery Controller, BIG IP
FortiADC Application Delivery Controller, FortiADC
Avi Software Load Balancer
 

Overview

 

Sample Customers

Riken, TransUnion, Tepco Systems Administration, Daejeon University, G&T Bank, Danamon, CyberAgent Inc.
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Palo Alto Networks, DGDean, Swisslos
Find out what your peers are saying about NetScaler, F5, HAProxy and others in Application Delivery Controllers (ADC). Updated: January 2026.
881,821 professionals have used our research since 2012.