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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
7.1
F5 BIG-IP LTM offers strong ROI with 24/7 availability and security, though some note high costs and variable returns.
Sentiment score
6.6
Fortinet FortiADC is chosen for reliable load management, security, and support, offering moderate ROI and essential performance.
Sentiment score
5.3
VMware Avi Load Balancer offers quick ROI with flexible licensing, but some companies face challenges due to unique usage cases.
The major return on investment is the security of our data.
The alert system is efficient, sending alerts within a fraction of a second if any power issues arise.
 

Customer Service

Sentiment score
6.7
F5 BIG-IP's customer service is praised for expertise and resources, though some experience delays and regional support issues.
Sentiment score
6.1
Fortinet FortiADC customer service is praised for effective support but varies in response time and relies on ticket prioritization.
Sentiment score
7.6
VMWare Avi Load Balancer's support is highly rated for efficiency and personalized service, despite varied ticket volumes.
I would rate the technical support of F5 BIG-IP Local Traffic Manager (LTM) nine out of ten.
The support team is knowledgeable and efficiently assists with automation and configuration problems.
The service is helpful yet not excellent.
 

Scalability Issues

Sentiment score
7.4
F5 BIG-IP LTM is valued for scalability, flexibility, and adaptability, with configuration and licensing considerations for optimal deployment.
Sentiment score
7.5
Fortinet FortiADC provides scalable solutions with virtual and cloud options, though performance varies by model and infrastructure needs.
Sentiment score
7.5
VMWare Avi Load Balancer offers scalable architecture, supports many applications, but encounters challenges with infrastructure and scalability in specific environments.
It is scalable for some versions, however, as components reach their end of support, upgrades are necessary to maintain scalability.
 

Stability Issues

Sentiment score
8.0
F5 BIG-IP LTM is valued for stability, handling high loads well despite occasional bugs, making it preferred by organizations.
Sentiment score
8.2
Fortinet FortiADC is praised for stability, reliable operation, effective support, and minor issues resolved through firmware updates.
Sentiment score
7.8
VMWare Avi Load Balancer is praised for its stability, though some note inconsistencies under heavy traffic conditions.
 

Room For Improvement

F5 BIG-IP LTM is expensive, complex, lacks flexibility, and needs better UI, reporting, support, cloud integration, and pricing.
Fortinet FortiADC needs advancements in algorithms, UI, support, documentation, scalability, features, pricing, licensing, performance, cloud, and AI integration.
VMWare Avi Load Balancer has pricing, documentation, integration, and security challenges, requiring improved setup, analytics, and sales practices.
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.
The limitation of managing all components and the differing versions pose challenges.
 

Setup Cost

F5 BIG-IP LTM pricing is higher with complex licensing, but performance justifies the cost; AWS Marketplace is convenient yet costlier.
Fortinet FortiADC is affordable compared to competitors, with flexible licensing, varying costs, and potential discounts based on configurations.
VMWare Avi Load Balancer offers flexible, competitive pricing with options based on bandwidth or CPU, and licensing transferability.
This solution is quite expensive compared to Kemp.
 

Valuable Features

F5 BIG-IP LTM provides traffic management, security, and customization with iRules, SSL offloading, and an intuitive interface.
Fortinet FortiADC excels in load balancing, security, and ease of integration, offering scalable, reliable, and comprehensive traffic management solutions.
VMWare Avi Load Balancer provides robust load balancing, integration, scalability, and functionalities, enhancing network infrastructure and management.
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.
I use server load balancing and employ layer seven features, which provide more granular traffic shaping and detailed logs.
FortiADC provides load-balancing capabilities needed for integration with other Fortinet platforms.
 

Mindshare comparison

As of July 2025, in the Application Delivery Controllers (ADC) category, the mindshare of F5 BIG-IP Local Traffic Manager (LTM) is 15.3%, up from 15.4% compared to the previous year. The mindshare of Fortinet FortiADC is 9.9%, up from 8.4% compared to the previous year. The mindshare of VMWare Avi Load Balancer is 5.6%, up from 3.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Delivery Controllers (ADC)
 

Featured Reviews

Bonieber  Orofeo - PeerSpot reviewer
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) ( /products/f5-big-ip-local-traffic-manager-ltm-reviews ) 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.
OusaidAbaz - PeerSpot reviewer
Integrates load balancing efficiently within existing technology environments
FortiADC provides load-balancing capabilities needed for integration with other Fortinet platforms. It allows for the creation of virtual IPs and applying various algorithms for traffic management. Although it offers fewer algorithms than competing platforms like F5, its capability to manage load balancing makes it valuable. The security features depend on the environment, relying on firewalls like FortiGate.
Richard Polyak - PeerSpot reviewer
Easy to set up and has good integration into the host environment but needs better third party integration
I'm not sure which version number we are on. It's one of the latest, I assume. We don't run the latest. We usually are either one or two versions behind. It is something we are exploring. We do have use cases and it will compete against our existing product line. That would have to go in the second half of this year. Right now, it's more of a comparison of how we use it right now. We don't use it really in production. We are going to definitely explore it and do our comparison and more in-depth analysis of the product and compare it against our existing product line. I'd advise potential users to do a very in-depth analysis of the products in comparison. And don't just look at the cover of it - really look into the detailed backend support infrastructure and if it can be implemented the way you need it to be. I'd rate the solution five out of ten. It's not a fully mature product.
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
Computer Software Company
13%
Government
8%
Manufacturing Company
7%
Computer Software Company
17%
Financial Services Firm
9%
Government
8%
Educational Organization
6%
Financial Services Firm
23%
Computer Software Company
12%
Comms Service Provider
10%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What needs improvement with F5 BIG-IP?
The price needs improvement as it is quite costly.
What is your primary use case for F5 BIG-IP?
We're using F5 BIG-IP Local Traffic Manager (LTM) ( /products/f5-big-ip-local-traffic-manager-ltm-reviews ) for our a...
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, Microsoft and others in Application Delivery Controllers (ADC). Updated: June 2025.
862,077 professionals have used our research since 2012.