C11

INSLIB is a portable C11 library for three-dimensional navigation state estimation. Its Kalman-filter core fuses inertial measurement data with GNSS/GPS, barometer, magnetometer, local-position, yaw, ground-speed, zero-velocity, and zero-rotation measurements to produce navigation states for drones, autonomous vehicles, robotics, aerospace, cars, embedded systems, and recorded-data post-processing. The dependency-free core uses no heap or operating-system dependencies and is designed for bare-metal microcontrollers and real-time control loops. It includes measurement-delay compensation, numerically robust UDU/Bierman-Thornton filtering, a lightweight World Magnetic Model for magnetic-declination correction, and an alternative attitude mode that can operate without a magnetometer. During GNSS outages, the parallel barometric-altitude channel can continue providing fused altitude and attitude estimates. The repository also provides Python bindings, replay and plotting tools, calibration utilities, a UDP live-data receiver, tutorials, example datasets, and support for correction sources including Galileo HAS, SPARTN/PointPerfect Flex, and RTK via NTRIP RTCM.

Dear ImGui is a self-contained, immediate-mode graphical user interface library for C++ developed for programmer-facing tools rather than typical end-user applications. Programs call UI functions each frame so the interface reflects live application state, making it suited to game-engine tooling, content-creation tools, visualization and debugging interfaces, real-time 3D applications, and embedded or fullscreen software. The library generates optimized vertex buffers that applications can render through their own 3D pipeline. Its core consists of platform-agnostic C++ source and header files that can be compiled directly into an existing project; platform and graphics API backends are provided separately, and custom backends can be used wherever textured triangles can be rendered. It is renderer-agnostic, portable, and has no external dependencies. Dear ImGui is distributed under a free, permissive license. The project emphasizes minimal state synchronization, setup, and maintenance, but does not provide some features common in higher-level GUI libraries, including full internationalization and accessibility support.

Interior Dev is an open-source collection of copy-paste React micro-interactions for the brief period after a click. Each component is distributed as a single file rather than a package and exports a headless `useX` hook containing the behavior without class names alongside an `X` styled example component. The components address layout-preserving transitions, animation restarts, resizing labels, loading jumps, interrupted drags and gesture recovery when focus is lost, keyboard interaction, and `prefers-reduced-motion` behavior; reduced-motion mode preserves the information while skipping the animation. The only dependency is `motion`, and the documentation site can be run with Bun.

LikeC4 is an open-source modeling language and toolset for describing software architecture as code and generating live, browsable diagrams from the model. It is inspired by the C4 Model and Structurizr DSL, while allowing users to define custom notation, element types, and nested architecture levels. The project provides a CLI for previewing diagrams, along with a VS Code extension and other tools for working with the models. LikeC4 is distributed under the MIT License.

loadersz is a framework-agnostic, dependency-free browser library of Canvas loading animations, distributed as a native Web Component with an imperative TypeScript API. It provides 150 motion states, including working, searching, connecting, solving, and racing, and supports configurable size, speed, density, color, theme, pausing, and reduced-motion behavior. The root import registers a switchable <loadersz-loader> element, while individual state entry points such as loadersz/racing include the Canvas core and one geometry builder for smaller fixed-state bundles. The API can also attach a fixed or switchable loader controller to an application-owned canvas and supports lifecycle methods such as setOptions and destroy. Typed integration adapters are provided for React, Vue, Svelte, and Angular; plain HTML, Lit, Solid, and Qwik can use the native element directly. The library pauses in hidden tabs, respects prefers-reduced-motion by default, and caps Canvas device-pixel ratio at two. The package has no regular runtime dependencies, and its repository is licensed under the MIT License.