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Cloud · head to head

HAProxy vs ThousandEyes

HAProxy logo

HAProxy

Cloud

High-performance TCP and HTTP load balancer

From
Free
Rated
-
Full reviewWebsite
ThousandEyes logo

ThousandEyes

Networking

Internet and network path monitoring, owned by Cisco but still sold as a standalone product on its own annual contracts

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only HAProxy has a free tier, so it costs nothing to try first.
  • Each has a real cost: HAProxy configuration syntax is dense and unforgiving, with a steep initial learning curve; ThousandEyes cisco does not publish a current definitive rate card, so any price a buyer finds online is likely outdated and should be confirmed directly with sales before budgeting
  • They diverge on capability: HAProxy covers High throughput, ThousandEyes covers Path visualisation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which HAProxy and ThousandEyes actually diverge.

Attributes where HAProxy and ThousandEyes differ
AttributeHAProxyThousandEyes
Starting priceFreeOn request
Pricing modelOpen source, no licence feequote, unit-based consumption on annual or prepaid contracts
Free tierYesNo
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, API
CategoryCloudNetworking

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in HAProxy

  • High throughput
  • Layer 4 and 7
  • Health checking
  • Rate limiting and ACLs

Only in ThousandEyes

  • Path visualisation
  • Cloud, enterprise and endpoint agents
  • Internet Insights
  • Cisco ecosystem integration
  • Unit-based consumption billing

What people use each for

The jobs each tool is most often brought in to do.

HAProxy

  • Load balancing at traffic levels where proxy efficiency shows up in the hardware billnot ThousandEyes
  • Precise traffic control — rate limits, sticky sessions, complex routing rulesnot ThousandEyes
  • TCP load balancing for databases and non-HTTP servicesnot ThousandEyes

ThousandEyes

  • A network operations team at a large enterprise needing to diagnose whether a performance problem sits inside their network, with an ISP, or at the destinationnot HAProxy
  • An organisation already standardised on Cisco networking wanting internet path monitoring that integrates with existing Cisco toolingnot HAProxy
  • A company needing endpoint agent testing from real employee devices to reproduce user-reported performance issuesnot HAProxy
  • An SRE team wanting aggregated internet outage and BGP visibility across a wide customer base rather than building that dataset themselvesnot HAProxy

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

HAProxy

  • Configuration syntax is dense and unforgiving, with a steep initial learning curve
  • No automatic certificate management, unlike newer servers that treat it as default behaviour
  • The built-in stats page is basic, so real observability needs exporters and dashboards
  • A dedicated load balancer is more machinery than small deployments need

ThousandEyes

  • Cisco does not publish a current definitive rate card, so any price a buyer finds online is likely outdated and should be confirmed directly with sales before budgeting
  • A 12-month minimum contract removes the option to trial the platform under real production load on a shorter commitment
  • Unit-based consumption billing across different test types is not always intuitive to forecast, and usage can grow unpredictably as more tests and agents are added
  • Since the Cisco acquisition, purchasing now runs through Cisco's broader enterprise sales and licensing process, which can be slower and less transparent than dealing with a smaller standalone vendor
  • Deep Cisco ecosystem integration is a real advantage only for organisations already standardised on Cisco; it offers less differentiated value for a non-Cisco shop
  • Endpoint agent pricing tiers (Essentials versus Advantage) gate meaningfully different capability, and choosing the wrong tier at signup can mean a contract renegotiation to get needed features

Pricing, plan by plan

HAProxy

Free
  • HAProxyFree
    • Full functionality
    • No usage limits
    • Community support

ThousandEyes

On request
  • ThousandEyes$undefined/year
    • Cloud and enterprise agent testing
    • Endpoint agents
    • Internet Insights

Which should you pick?

Choose HAProxy if

  • You need high throughput.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want layer 4 and 7.
HAProxy review

Choose ThousandEyes if

  • You need path visualisation.
  • You work on Web, API.
  • You also want cloud, enterprise and endpoint agents.
ThousandEyes review

Questions people ask

Is HAProxy or ThousandEyes better?
Neither clearly leads. HAProxy starts at Free and ThousandEyes at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, HAProxy or ThousandEyes?
HAProxy has a free tier; the other does not. Paid plans start at Free for HAProxy and On request for ThousandEyes.
Does HAProxy or ThousandEyes run on more platforms?
HAProxy runs on Linux, Docker, Kubernetes, Self-hosted. ThousandEyes runs on Web, API.
Can I use HAProxy for free?
Yes. HAProxy has a free tier, so you can try it without paying. ThousandEyes starts at On request.
What is HAProxy best used for?
HAProxy is most often used for load balancing at traffic levels where proxy efficiency shows up in the hardware bill, precise traffic control — rate limits, sticky sessions, complex routing rules, tcp load balancing for databases and non-http services. Of those, load balancing at traffic levels where proxy efficiency shows up in the hardware bill and precise traffic control — rate limits, sticky sessions, complex routing rules are not what ThousandEyes is typically brought in for.
What can HAProxy do that ThousandEyes cannot?
HAProxy covers High throughput, Layer 4 and 7, Health checking, Rate limiting and ACLs. ThousandEyes covers Path visualisation, Cloud, enterprise and endpoint agents, Internet Insights, Cisco ecosystem integration.

Answered from the vendors’ own pages

HAProxy: Is HAProxy free?

Yes, the community version is open source. HAProxy Technologies sells HAProxy Enterprise separately.

ThousandEyes: Is ThousandEyes still sold as a standalone product after the Cisco acquisition?

Yes, it remains a distinct, purchasable product line rather than being merged into another Cisco offering.

HAProxy: HAProxy or Nginx?

HAProxy is a specialist load balancer with deeper balancing and health-check features. Nginx also serves static content and is more approachable, which is why it is more common as a general web server.

ThousandEyes: Is there a published, current price list?

No, Cisco does not publish a definitive current rate card; historical unit prices exist online but should not be treated as confirmed 2026 pricing.

HAProxy: Does HAProxy handle TLS certificates automatically?

No. Certificate issuance and renewal are external, unlike Caddy where it is automatic.

ThousandEyes: What is the minimum contract length?

12 months.

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