I put together a list of all of the active load balancing vendors that I’m aware of, and dayom, there’s a lot.
- A10 Networks
- Array Networks (corrected)
- Barracuda Networks
- BalanceNG
- CAI Networks Web Mux
- Celestix
- Cisco, makers of LocalDirector, Distributed Director, CSS, CSM, ACE load balancers
- Citrix/Nescaler
- Coyote Point Systems
- Extreme Networks
- F5 Networks, makers of BIG-IP/3DNS
- Foundry Networks
- Juniper DX
- KEMP Technologies
- Linux Virtual Server project
- Load Balancer.org
- Nortel, makers of the Alteon line
- OpenBSD’s PF
- Pound (Open Source)
- Radware
- XGForce
- Zeus
That’s over 20 different vendors/projects that involve load balancing. If you know of even more, shoot me an email (tony at lb digest dot com).
And as always, don’t be afraid to shoot me a question about load balancing. I’ve been getting quite a few lately, and I’ve posted some of the answers so that others may hopefully benefit. You can email them, or simply throw them in a comment section of a post.


Hi Tony,
I think the ArrayNetworks link is wrong. It should be http://www.arraynetworks.net
Thanks,
Ed
Ah, thanks. Fixed!
Tony,
Just found out Sun has it L4-L7 application switch. Maybe it can be an addition to our list.
http://www.sun.com/products/networking/switches/n2000/
Ed
from their site
SUN L4-7=”No Longer Orderable”
Let’s include KEMP Technologies, Inc. into the SLB buyers guide. We’ve added more power to our product family with 8 gigaport model the LM 3500. Comes with 2000 SSL TPS and first year free support.
“SUN L4-7=â€No Longer Orderable—
True, but Sun will be happy to sell Zeus on their hardware directly.
Looking for a CSS replacement that can do header rewrite method (such as X-forwarded-proto). Problem that we need to solve is that not every page we serve up in our web application is SSL, we need to know “did this request come to this page thru SSL or not”. I don’t know much about this subject, but I’ve been tasked with finding a solution.
Thanks!
Great compilation, Tony. Very useful. Thanks!
Additional, recent discussion here:
https://lists.dns-oarc.net/pipermail/dns-operations/2009-November/004607.html
The question is, of those 20+ vendors/projects, WHO does DNS redirection (for subdomains) and supports DNSSEC? And IPv6? Anyone?