Softwr

Networking · head to head

pfSense vs QuestDB

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
QuestDB logo

QuestDB

Databases

Fast open source time-series database for high throughput ingestion

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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; QuestDB open-source edition lacks high-availability, distributed architecture, and enterprise security features
  • They diverge on capability: pfSense covers Stateful firewall and NAT, QuestDB covers High Throughput Ingestion.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which pfSense and QuestDB actually diverge.

Attributes where pfSense and QuestDB differ
AttributepfSenseQuestDB
Pricing modelOpen source Community Edition, free; commercial Plus edition sold separately by Netgateopen-source
PlatformsLinuxDocker, Kubernetes, Cloud (AWS, Azure, GCP)
CategoryNetworkingDatabases
FoundedUnknown2014

Identical on both: starting price (Free), free tier (Yes), 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 pfSense

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

Only in QuestDB

  • High Throughput Ingestion
  • SQL Support
  • Time-series Optimization
  • SIMD Vectorization
  • Column-oriented Storage
  • Built-in Web Console
  • InfluxDB Line Protocol
  • PostgreSQL

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 QuestDB
  • A business wanting an integrated firewall appliance with vendor support, typically buying a Netgate appliance bundled with pfSense Plusnot QuestDB
  • A team wanting to evaluate advanced features like real-time threat intelligence before committing to Netgate hardware or a Plus migrationnot QuestDB
  • An organisation replacing an expensive commercial firewall with an open source alternative while retaining the option to add commercial support laternot QuestDB

QuestDB

  • Time-series analytics ingesting up to 20M rows/second from IoT sensors or financial data feedsnot pfSense
  • Real-time dashboarding with 32ms time-to-first-row latency for minute-level analyticsnot pfSense
  • Applications requiring multi-tier storage (hot ingest, real-time SQL, cold Parquet archive)not 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

QuestDB

  • Open-source edition lacks high-availability, distributed architecture, and enterprise security features
  • Enterprise edition pricing not published; requires contacting sales for custom quote
  • Ingestion limit of 20M rows/sec platform-dependent; may not scale to extreme throughput requirements

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

QuestDB

Free

No published plan breakdown. See the QuestDB review.

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 QuestDB if

  • You need high throughput ingestion.
  • You want to start without paying.
  • You work on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
  • You also want sql support.
QuestDB review

Questions people ask

Is pfSense or QuestDB better?
Neither clearly leads. pfSense starts at Free and QuestDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, pfSense or QuestDB?
pfSense starts at Free and QuestDB at Free.
Does pfSense or QuestDB run on more platforms?
pfSense runs on Linux. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
Can I use pfSense for free?
Both have a free tier, so you can try either at no cost before committing.
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 QuestDB is typically brought in for.
What can pfSense do that QuestDB cannot?
pfSense covers Stateful firewall and NAT, VPN support, Traffic shaping and QoS, Package ecosystem. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

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.

QuestDB: How much does QuestDB Enterprise cost?

QuestDB does not publish specific pricing for the Enterprise tier. Customers must contact QuestDB via their enterprise contact form to receive a custom quote.

Source
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.

QuestDB: Does QuestDB offer a free version?

Yes, QuestDB Open Source is completely free and recommended for evaluation, prototyping, and pilot projects. Enterprise features, high availability, security, and dedicated support require the paid Enterprise tier.

Source
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.

QuestDB: What deployment options does QuestDB offer?

QuestDB offers open source deployment, Enterprise deployment, and Bring Your Own Cloud (BYOC) deployment. Pricing details for BYOC and Enterprise tiers are not published and require direct contact with sales.

Source
Share

Related pages

More on pfSense

More on QuestDB

Keep looking

Other head to heads