LibreSpeed vs Mininet

LibreSpeed is a lightweight JavaScript speed test that uses XMLHttpRequest and Web Workers to measure download, upload, ping, and jitter. It supports IE11, current Edge, Chrome, Firefox, Safari, and mobile browser versions. Telemetry and result sharing are optional, and an installation with multiple test points can automatically select the point with the lowest ping. A separate stability test reports current, average, minimum, and maximum latency, jitter, failed-request percentage, threshold alerts, and CSV export. It can target a local backend, configured test points, or Google, Cloudflare, and Apple. Deployment uses a web server such as Apache, nginx, or IIS with PHP 5.4 or newer, though other backends are available. Optional result storage supports MariaDB, MySQL, Microsoft SQL Server, PostgreSQL, and SQLite. The project provides an Android client template, a command-line client, and a .NET client library through NuGet. Go and Rust implementations are available; the Node.js implementation is partial and not recommended. LibreSpeed is free and open source, with self-hosting and no paid plans listed.

Mininet is a free network emulator that creates virtual hosts, switches, controllers and links on one machine. Its hosts run standard Linux network software on the real Linux kernel and network stack, while switches support OpenFlow. The project describes uses including research, development, learning, prototyping, testing and debugging, including experiments with SDN systems using OpenFlow and P4. A topology-aware and OpenFlow-aware command-line interface supports debugging and network-wide tests. Users can select parameterized topologies or create custom ones, and an extensible Python API supports network creation and experimentation. Mininet networks can connect to real networks, and code developed in Mininet can move to real systems with minimal changes. Installation options include a pre-packaged virtual machine, native installation from source and packages for recent Ubuntu or Debian 11 and later; Fedora support is experimental. Mininet depends on the Linux kernel, while its VM can run through VMware or VirtualBox on Mac, Windows and Linux. Its networks are constrained by a single server's CPU and bandwidth, and it cannot currently run non-Linux-compatible OpenFlow switches or applications. Mininet is released under a permissive BSD open source license.