LibreQoS is software used by Internet Service Providers (ISPs) and Enterprises to improve the Quality of Experience (QoE) of end-users on their networks. LibreQoS works by monitoring network performance and reducing latency for interactive online applications. ISPs regularly report that trouble calls reduce substantially after deploying LibreQoS on networks. For an ISP or other company to deploy LibreQoS – no changes are required for existing Routers, Switches or Access points: LibreQoS runs on a server that acts as a managed bridge sitting between the edge router and the core of the network. LibreQoS servers can shape traffic for tens of thousands of customers. LibreQoS benefits network operation and planning by measuring metrics such as end-to-end TCP round trip time for each Subscriber, Access Point, and Site on a network – saving the relevant data for later analysis in the LibreQoS Insight system. LibreQoS code is Open Source. It improves Quality of Experience by implementing state of the art Flow Queueing (FQ) and Active Queue Management (AQM) algorithms. LibreQoS offers paid support packages and subscriptions to additional analysis service features available through [LibreQoS Insight](https://libreqos.io/insight/). To learn more, please visit [LibreQoS.io](https://libreqos.io/). ## Sponsors LibreQoS' development is made possible by our sponsors, the NLnet Foundation and Equinix. LibreQoS has been funded through the NGI0 Entrust Fund, a fund established by NLnet with financial support from the European Commission’s Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101069594. Learn more at https://nlnet.nl/project/LibreQoS/ Equinix supports LibreQoS through its Open Source program – providing access to hardware resources on its Equinix Metal infrastructure. Equinix’ support has been crucial for LibreQoS to scale past 10Gbps for higher-bandwidth networks. Learn more about Equinix Metal here. Learn more about [Equinix Metal here](https://deploy.equinix.com/metal/). ## Documentation / Get Started / System Requirements [ReadTheDocs](https://libreqos.readthedocs.io/en/latest/) ## LibreQoS Chat Our chat server is available at [https://chat.libreqos.io/](https://chat.libreqos.io/). ## LibreQoS Social - https://www.youtube.com/@LibreQoS - https://www.linkedin.com/company/libreqos/ - https://www.facebook.com/libreqos - https://twitter.com/libreqos - https://fosstodon.org/@LibreQoS/ ## LibreQoS Insight LibreQoS Insight is the successor to our Long Term Stats (LTS) service. Insight was designed from the ground up to accommodate multi-shaper networks, providing high-resolution data on TCP Round Trip Time, TCP Retransmits, Throughput, Flows, ASN Stats, CAKE stats, Geographic Endpoint stats, as well as data on protocol, ethertype, and utilization percentages. Insight allows you to thoroughly monitor your network both at high-level, as well as to drill down to monitor the performance of individual subscribers, Access Points, OLTs, Sites, and even entire network segments. With powerful metrics such as TCP Retransmits, you can track and resolve subtle network issues before customers notice them at all. Insight provides a free 30-day trial to allow network operators to see its powerful capabilities firsthand. Learn more about Insight [here](https://libreqos.io/insight). ## In Loving Memory of Dave Täht Dave served as LibreQoS' Chief Science Officer and championed the global fight against bufferbloat. You can learn more about [Dave's incredible legacy here](https://libreqos.io/2025/04/01/in-loving-memory-of-dave/), and learn how our team is working to [carry on his mission](https://libreqos.io/company/). ## External Pull Request Policy We can only accept PRs that address one specific change or topic each. We ask that you keep all changes small and focused per-PR to help our review and testing process.