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Networking · head to head

pfSense vs ThousandEyes

pfSense logo

pfSense

Networking

Open source firewall software with a free Community Edition and a separate commercial Plus edition sold by Netgate

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 pfSense has a free tier, so it costs nothing to try first.
  • Each has a real cost: pfSense pfSense CE and pfSense Plus are not simply the same software with a support contract layered on top; Plus is a separately developed edition with its own feature set, and moving between them is a migration, not a toggle; ThousandEyes cisco does not publish a current definitive rate card, so any price a buyer finds online is likely outdated and should be confirmed directly with sales before budgeting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: pfSense covers Stateful firewall and NAT, ThousandEyes covers Path visualisation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which pfSense and ThousandEyes actually diverge.

Attributes where pfSense and ThousandEyes differ
AttributepfSenseThousandEyes
Starting priceFreeOn request
Pricing modelOpen source Community Edition, free; commercial Plus edition sold separately by Netgatequote, unit-based consumption on annual or prepaid contracts
Free tierYesNo
PlatformsLinuxWeb, API

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

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 pfSense

  • Stateful firewall and NAT
  • VPN support
  • Traffic shaping and QoS
  • Package ecosystem
  • CE and Plus editions

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.

pfSense

  • A home user or small business wanting a free, fully-featured firewall on commodity hardware with no licence costnot ThousandEyes
  • A business wanting an integrated firewall appliance with vendor support, typically buying a Netgate appliance bundled with pfSense Plusnot ThousandEyes
  • A team wanting to evaluate advanced features like real-time threat intelligence before committing to Netgate hardware or a Plus migrationnot ThousandEyes
  • An organisation replacing an expensive commercial firewall with an open source alternative while retaining the option to add commercial support laternot 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 pfSense
  • An organisation already standardised on Cisco networking wanting internet path monitoring that integrates with existing Cisco toolingnot pfSense
  • A company needing endpoint agent testing from real employee devices to reproduce user-reported performance issuesnot pfSense
  • An SRE team wanting aggregated internet outage and BGP visibility across a wide customer base rather than building that dataset themselvesnot pfSense

Where each one falls short

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

pfSense

  • pfSense CE and pfSense Plus are not simply the same software with a support contract layered on top; Plus is a separately developed edition with its own feature set, and moving between them is a migration, not a toggle
  • Running Plus on non-Netgate hardware depends on Netgate's current migration terms, which have changed over time, so a buyer planning to use white-box hardware with Plus should verify current eligibility rather than assume it works as it did previously
  • CE has no official vendor support channel; a business relying on it for production firewalling without a support contract is self-supporting on community forums
  • Some newer features and threat intelligence integrations are Plus-only, so CE users do not get feature parity going forward even though both editions remain under active development
  • Netgate's own appliance pricing and the terms of the CE-to-Plus migration path are not always clearly presented in one place, requiring some digging to understand the real total cost of a Plus deployment on non-Netgate hardware
  • As with any self-managed firewall, security depends on the operator applying updates and correctly configuring rules; there is no managed security operations layer included even in Plus

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

pfSense

Free
  • pfSense CEFree
    • Full firewall and routing functionality
    • No vendor lock-in to hardware
    • Community support
  • pfSense Plus (via Netgate appliance)$undefined/one-time
    • Bundled with Netgate hardware appliances from around $189
    • Threat intelligence feeds
    • Certified support tiers

ThousandEyes

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

Which should you pick?

Choose pfSense if

  • You need stateful firewall and nat.
  • You want to start without paying.
  • You work on Linux.
  • You also want vpn support.
pfSense 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 pfSense or ThousandEyes better?
Neither clearly leads. pfSense 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, pfSense or ThousandEyes?
pfSense has a free tier; the other does not. Paid plans start at Free for pfSense and On request for ThousandEyes.
Does pfSense or ThousandEyes run on more platforms?
pfSense runs on Linux. ThousandEyes runs on Web, API.
Can I use pfSense for free?
Yes. pfSense has a free tier, so you can try it without paying. ThousandEyes starts at On request.
What is pfSense best used for?
pfSense is most often used for a home user or small business wanting a free, fully-featured firewall on commodity hardware with no licence cost, a business wanting an integrated firewall appliance with vendor support, typically buying a netgate appliance bundled with pfsense plus, a team wanting to evaluate advanced features like real-time threat intelligence before committing to netgate hardware or a plus migration, an organisation replacing an expensive commercial firewall with an open source alternative while retaining the option to add commercial support later. Of those, a home user or small business wanting a free, fully-featured firewall on commodity hardware with no licence cost and a business wanting an integrated firewall appliance with vendor support, typically buying a netgate appliance bundled with pfsense plus are not what ThousandEyes is typically brought in for.
What can pfSense do that ThousandEyes cannot?
pfSense covers Stateful firewall and NAT, VPN support, Traffic shaping and QoS, Package ecosystem. ThousandEyes covers Path visualisation, Cloud, enterprise and endpoint agents, Internet Insights, Cisco ecosystem integration.

Answered from the vendors’ own pages

pfSense: What is the difference between pfSense CE and pfSense Plus?

CE is the free, open source edition installable on any compatible hardware; Plus is a commercial edition from Netgate with additional features and support, typically bundled with Netgate appliances.

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.

pfSense: Can I run pfSense Plus on my own hardware?

It is possible through a migration from a CE installation via Netgate's official channel, but the terms and availability of that path have changed over time and should be confirmed directly with Netgate.

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.

pfSense: Is pfSense CE really free with no catch?

Yes, CE has no licence fee and no hardware lock-in, though it comes with community rather than vendor support.

ThousandEyes: What is the minimum contract length?

12 months.

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