Load Balancing

Akamai
Offers site infrastructure management and load balancing products and services.
http://www.akamai.com/

Astrocom Corp
PowerLink multi-homing WAN failover and backup solutions. WAN high availability, bandwidth aggregation, and ISP failover at an affordable price.
http://www.astrocorp.com

Auto Failover
Offers load balancing and server monitoring services.
http://www.autofailover.com/

balance
An Open Source load balancing TCP proxy.
http://balance.sourceforge.net/

BalanceNG
BalanceNG is an IP load balancing software solution running on Linux or Solaris.
http://www.inlab.de/balanceng/index.html

Boostworks
"Intelligent Network Acceleration" software speeds performance, and reduces latency of global enterprise networks, ISPs and Content Providers using analysis, optimization, compression, cashing. Synchronix TCP/IP WAN solutions for legacy, client/server, Internet, intranet mission critical applications.
http://www.boostworks.com/

Certeon Inc.
HTTP and HTTPS accelerators for management and sharing of applications, files, and video and audio streams over distributed networks.
http://www.certeon.com/

Citrix
Global application service provider offering hosting and colocation services as well as training and certification for their software.
http://www.citrix.com/

Citrix NetScaler
Offers web traffic management products for load balancing, content delivery, and security.
http://www.citrix.com/English/ps2/products/product.asp?contentID=21679

Coyote Point
Offers load balancing and web infrastructure services for both intranet and extranets.
http://www.coyotepoint.com/

Does Consulting
Offer services within configuration, administration, and maintenance of load balancers. Based in Boise, Idaho.
http://www.doesconsulting.com/

Elfiq Link Load Balancer
Provides redundant connectivity by load balancing multiple Internet and private links from various providers.
http://www.elfiq.com

F5 Networks, Inc.
Provides integrated traffic management software-based solutions designed to improve the availability and performance of mission-critical internet-based servers and applications. (Nasdaq: FFIV).
http://www.f5.com/

FatPipe Networks
Provides router clustering with load balancing and failover of Internet lines.
http://www.fatpipeinc.com

Geo Redirect Traffic Management
Traffic management and redirection software based upon the surfers geo graphical data. Commercial product.
http://georedirect.com/

KEMP Technologies
Offering Internet traffic management solutions covering load balancing, network monitoring, content switching and clustering.
http://www.kemptechnologies.com

Linux Network Address Translation
A survey of Linux NAT technologies, including loads of information/pointers on load balancing.
http://www.linas.org/linux/load.html

Linux Virtual Server Project
Complete Open Source solution to build clusters of Linux machines.
http://www.linuxvirtualserver.org

Load Balancer Appliances
Provide loadbalancer hardware appliances and software solutions.
http://www.loadbalancer.org/

Load balancing definition
PC Webopedia entry for "load balancing".
http://webopedia.com/TERM/l/load_balancing.html

Local Mirror
Content delivery network service company offering static and streaming content delivery.
http://www.localmirror.com/

mod_backhand
Drop in module for the Apache web server that provides powerful, flexible and seamless load balancing of heterogeneous server clusters.
http://www.backhand.org/mod_backhand/

Network Physics, Inc.
Internet traffic controller to reduce bandwidth costs and stabilize routers.
http://www.networkphysics.com

One 4 Net
Offers load balancing and enterprise management and security services.
http://www.one4net.com

Pen
A load balancer for simple tcp based protocols such as http or smtp for Unix.
http://siag.nu/pen/

Queue
GNU load-balancing/distributed batch processing utility and local rsh replacement.
http://www.gnu.org/software/queue/

Radware
Server load balancing tools for IP traffic management.
http://www.radware.com

Resonate
Makers of Central Dispatch (load-balancing) and Global Dispatch (DNS-based wide-area load balancing). The software runs on a variety of Unix systems.
http://www.resonate.com/

SciVisum Ltd.
Software measures the impact of load/stress on both timing and error rates for web servers.
http://www.scivisum.co.uk

Super Sparrow
Open Source Global content distribution and load balancing using BGP routing information.
http://www.supersparrow.org/

SysMaster
Offers network appliances for network infrastructure management through server load balancers, firewalls, Internet gateways, cache controllers, and traffic monitors.
http://sysmaster.com

Tractionet
Offers refurbished servers, load balancers, and consulting services.
http://www.tractionet.com

TriLoad Balancer
Base on Linux, Support DR,NAT,Tunnel Topologies. It dispatches the work load to servers within the application cluster.
http://www.triload.com/en

Turbolinux Cluster Server
Linux-based application clusters servers running Linux, Windows and Solaris.
http://www.turbolinux.com/products/tlcs8/

Ultra Monkey
Project to create load balanced and highly available services on a local area network using Open Source components on the Linux Operating System.
http://www.ultramonkey.org/

Uni Tech
Creates high availability and load balancing of Internet servers by distributing traffic according to client proximity, server load and network health.
http://www.unitechnetworks.com/

Xrio
Manufacturers of the Unified Bandwidth Management (UBM) range of load balancing routers. Includes product information, support and information about industry solutions.
http://www.xrio.com

Load Balancing Your Web Site
Round-Robin DNS vs. Proxying. From: Web Techniques Magazine. <small>(May 1, 1998)</small>
http://www.webtechniques.com/archives/1998/05/engelschall/