LibreQoS

Reshapes Reshapes

Networks

Solve Latency
Issues

Mitigate both latency and latency-under-load for all congestion points on your network fabric.

Reduce Trouble
Calls

"All our tech support calls about 'speed' just vanished."

Improve Subscriber
Retention

Solve issues before they impact subscribers - Take a proactive approach with the industry-leading QoE solution.

Analyze Your Network In Real Time

LibreQoS provides a real-time view of your network. With live monitoring of TCP Round Trip Time, TCP Retransmits, and Throughput – LibreQoS allows you to see exactly where data is flowing on your network, and to identify any potential customer pain-points that may exist.

Deep Insight. Smart Shaping. Better QoE.

Trusted by 900+ Networks Worldwide

🏆 2025 WISPA Product of the Year 🏆

LibreQoS was voted Product of the Year by members of the Wireless Internet Service Providers Association in 2025.

Comprehensive Network Monitoring​

LibreQoS monitors key QoE metrics such as TCP Round Trip Time (RTT), TCP Packet Retransmissions, Flows, Throughput, and Utilization. These metrics are recorded per subscriber, access point, OLT, site, tower, and backhaul – all using passive monitoring techniques (no SNMP needed).

LibreQoS v1.5 Dashboard

Traffic Shaping Based On Network Topology

LibreQoS allows Network Operators to apply traffic shaping based on the capacities of each bottleneck in the access network.

LibreQoS uses hierarchical shaping to ensure that throughput at any choke-point along the network (back-hauls, access points / OLTs) will not exceed the equipment’s actual capacity.

LibreQoS’ network topology based shaping helps mitigate harmful micro-bursts of traffic – ensuring smooth, stable connectivity for all users. It also allows network operators to support more users on the same network infrastructure than would be possible using competing QoE solutions.

LibreQoS Tree Overview

Common Applications Kept Enhanced (CAKE)

LibreQoS uses CAKE (Common Applications Kept Enhanced) — a state-of-the-art Active Queue Management (AQM) technique.

Built on the proven foundations of fq_codel and refined through nearly a decade of development, CAKE brings smarter, more predictable handling of subscriber traffic.

With CAKE, bulk transfers no longer disrupt real-time applications. A Zoom call stays crystal clear even if a large OS update runs in the background.

The result: stable latency and smooth performance for video calls, VoIP, and online gaming — exactly where subscribers notice quality the most.

 

A Waveform Bufferbloat test result of a subscriber on a network using LibreQoS – showing +0ms of bufferbloat in each direction.

FIFO vs CAKE - How packet order changes latency

Without CAKE: FIFO output order (one busy queue)

In a single FIFO queue, bulk transfers dominate the buffer, forcing latency-sensitive packets (games, calls, video) to wait. The result: jitter, lag, and dropouts whenever downloads spike.

With CAKE: per-flow fair queueing output order

CAKE applies per-flow fair queuing with AQM, using diffserv4 to separate traffic into Voice, Video, Best-Effort, and Bulk classes. Under load, real-time flows are prioritized automatically — no DPI or app signatures required.

  • Game
  • Video Call
  • Streaming
  • Bulk Download

Additional Features

Monitoring

Visualizations

  • Flow Sankeys
  • Flow Map
  • Flow Table
  • RTT Queue Tree
CAKE Stats
  • Backlog
  • Delays
  • Queue Length
  • Traffic
  • ECN Marks
  • Shaper Drops

Metrics

  • TCP Round Trip Time
  • TCP Retransmits
  • Flows
  • ASN Stats
  • Geographic Endpoint
  • Protocol
  • Ethertype
  • Throughput
  • Utilization

Netflow Export

Traffic Shaping

  • Common Applications Kept Enhanced (CAKE)
  • Diffserv (Optimize VoIP & Video Calls)
  • XDP + eBPF Offload Engine
  • Shaping Based On Network Topology
  • Micro-Burst Mitigation
  • Hierarchical Queuing
  • Dual-Stack IPv4/IPv6 Support

Targets

  • Subscriber
  • Access Point / FTTH OLT
  • Site/Tower
  • Micro-PoP
  • Back-haul Fiber / Back-haul Radio

Integrations

  • Splynx
  • UISP
  • WISPGate
  • Powercode
  • Sonar

LibreQoS v1.5

Networks We Serve

Fixed Wireless
Coax / DOCSIS
Fiber / FTTX
SD-WAN
Event WiFi
Maritime
Hotel & Hospitality

Testimonials

"We've been testing Libre for the last three months now and are very happy with the results. The team is highly responsive and communicative, and they have been very receptive to feature requests we’ve made. We’ve also evaluated Preseem, BQN, and are waiting on a full-fledged test of PQ. With preseem we felt frustrated by its ability to manage the congestion of oversaturated pipes and APs, but the reporting was some of the easiest to understand and use for CRMS. BQN provided advanced functionality and detailed reporting, though its upgrade process involved multiple steps. We experienced an issue during an upgrade in August 2024 that impacted performance and was unable to be resolved, so we had to abandon the platform. What I like about Libre is that we can afford to deploy a box at every step of our network to manage congestion at very little cost—something that would be more costly with other platforms. We are planning to deploy a box at every tower site and backhaul relay point in the network and are very excited by this prospect."
Louis Elliott
CEO | Streamline Internet
"I've been running my 1.4 LibreQoS on a network segment with 128 current subs for some time now. I moved off of Preseem on this network because I wanted to both vet LibreQoS, but I also wanted to vet a model out. This area is getting overbuilt by Spectrum fiber so I really had to up my game from 25Mbps services. ALL services went to the base price and ALL services got moved up to 100x25. Every AP got a shaper matching it's realistic peak performance, often it's only 100Mbps on AirMax. The premise was that my 2-10 sub AirMax APs were underutilized and that might be hurting my marketability against a fiber vendor. So letting subscribers share a higher speed plan and letting LibreQoS fair share that should make for a better customer experience. It did. Absolute success. Of 128 subs, I average about 10 that go over 3-6Mbps and are 40-50Mbps during prime time and get 'more' out of the service now. My average use has barely moved up. And those more active users are huge allies in local social media groups. With 128 subs on a minimum of 100Mbps, and a good handful on 300x100 and 300x300 on Wave links, I'm getting high averages of about 400Mbps on 128 subs and a low hum of around 100Mbps. Basically, this is an almost zero cost solution to have people 'feel' like they have a 4x faster connection when they need it. It's cost me at most about 100Mbps of prime time throughput."
Daniel Denson
Denson Technologies

LibreQoS Insight

Network Insights Through Passive Monitoring

LibreQoS Insight is an analytics service purpose-built for LibreQoS, designed from the ground-up with performance and efficiency at the forefront. With flexible time window views ranging from 5 minutes to 30 days, Insight provides you with comprehensive network performance insights.

Reports

  • AI Reports
  • Subscriber
  • Access Point / OLT
  • Site / Tower

Advantages

  • Long-Term Analytics
  • Aggregate Multiple Shapers
  • Stats-Based CPU Balancing

Metrics

  • TCP Round Trip Time
  • TCP Retransmits
  • Utilization
  • Throughput
Learn More About LibreQoS Insight

Plans

LibreQoS + Insight

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For ISPs and Enterprises seeking advanced analytics, reporting, and centralized control.

  • Live Network Monitoring
  • CAKE Traffic Shaping (per-subscriber fair queuing)
  • StormGuard automatic node congestion handling
  • Works with OSS/Billing: Splynx, UISP, WISPGate, Powercode, Sonar
  • Advanced real-time metrics (RTT, retransmits, throughput, flows, ASN, geo, protocol, utilization)
  • Long-Term Stats & Subscriber/AP/Site Reports
  • Centralized Management: aggregate & control multiple shapers from one dashboard
  • Intelligent Resource Balancing: stats-based CPU allocation & auto-adjust by demand
  • Real-Time Latency & Issue Detection with Smart Alerts
  • AI-Powered Reports & Recommendations
  • Topology Visualization & Centralized Network View
  • Heatmap-based issue detection (spot problems in seconds)
Start My Free 30-Day Trial

LibreQoS Community

$0 Free forever

For micro ISPs looking for reliable live monitoring and shaping, free forever.

  • Live Network Monitoring
  • CAKE Traffic Shaping (per-subscriber fair queuing)
  • StormGuard automatic node congestion handling
  • Works with OSS/Billing: Splynx, UISP, WISPGate, Powercode, Sonar
  • Advanced real-time metrics (RTT, retransmits, throughput, flows, ASN, geo, protocol, utilization)
  • Long-Term Stats & Subscriber/AP/Site Reports
  • Centralized Management: aggregate & control multiple shapers from one dashboard
  • Intelligent Resource Balancing: stats-based CPU allocation & auto-adjust by demand
  • Real-Time Latency & Issue Detection with Smart Alerts
  • AI-Powered Reports & Recommendations
  • Topology Visualization & Centralized Network View
  • Heatmap-based issue detection (spot problems in seconds)
Get started for free

The Open Source Advantage

LibreQoS is Open Source software (Libre software) licensed under the GPLv2. The project is supported and made possible by our sponsors, NLNet and Equinix, as well as by your subscription to the Insight feature set.

More About Open Source

Get Started With LibreQoS

Below are the steps to test, validate, and deploy LibreQoS on your network.

Step 1

Design

Design

Learn how LibreQoS fits into your network design.

Step 2

Requirements

Requirements

Find hardware to match your requirements.

Step 3

Install

Install

Set up your testbed, validate, and deploy.

Step 4

Chat

Chat

Need help? Visit our chat server.

Step 5

Trial Insight

Insight

Get the most out of LibreQoS + Insight.

Need Help?

LibreQoS Certified Integrators, Trainers, & Consultants

North America

LibreQoS
Carbon Network Solutions
Cydrion

Asia

NetResc
Mindanao United Internet Provider Service Cooperative
Cloudbytes Networks Enterprises Inc.
JAT I.T Services
FOJR Network & Data Solution
WISP Network & Data Solutions
Queens Link Technology

Latin America

NETCOM

Case Studies

CTN Malawi

CTN Malawi, formerly known as Converged Technology Networks, is an innovative Internet Service Provider (ISP) based in Malawi, often referred to as the warm heart of Africa.

Read More »

More Information

Trying To
Solve "Lag"?
Fix Latency

Latency

“Speed” is mostly a matter of latency, not just bandwidth.

How
LibreQoS Works

How It Works

LibreQoS webinar.

Frequently Asked Questions

FAQ

Learn how LibreQoS fits in to your ISP network.

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