About GlideComp

Mapping & Geospatial

• Mapbox GL JS — Interactive vector maps, terrain elevation and satellite imagery (Mapbox Terms of Service)
• OpenStreetMap — The base map data behind the Mapbox styles, © OpenStreetMap contributors (ODbL 1.0)
• Turf.js — Geospatial analysis (distance, bearing, bounding boxes) (MIT)
• Threebox — Three.js integration for Mapbox GL (MIT)
• tz-lookup — Timezone from coordinates, so each task reads in its own local time. Its database is built from Evan Siroky's timezone-boundary-builder, itself derived from OpenStreetMap (CC0 1.0)

3D & Rendering

• Three.js — 3D graphics library (MIT)

Competition Data

The past competitions on this site were flown at real events, and scored and published by their organisers. GlideComp rescores the same tracks to show its working, so anyone can compare its scores with the official results.

• xc.highcloud.net — The AirScore site that scored the Australian competitions here, and the source of their tasks, track logs and official results. Those flights remain the work of the pilots who flew them and the organisers who ran the events
• AirScore — The GAP scoring software behind that site. GlideComp's scores are checked task by task against the results AirScore published (GPL 2.0)
• FAI / CIVL Sporting Code Section 7F — The GAP cross-country scoring specification that GlideComp implements and explains

Weather Data

The task analysis shows the day's conditions: wind through the day, cloud cover and thermal height. These are modelled figures for a grid point near the task, not readings taken at launch, so the organiser's weather notes on each task are the local ground truth.

• Open-Meteo — Live forecasts, archived forecasts and historical weather, free and open, under CC BY 4.0
• ECMWF — The IFS forecast model, and the ERA5 reanalysis that covers older competitions, produced for the Copernicus Climate Change Service

UI & Styling

• React — The app itself, rendered with React DOM and routed with React Router (MIT)
• React Aria Components — Adobe's accessible component primitives, with @internationalized/date for time zone–correct dates (Apache 2.0)
• shadcn/ui — the design tokens and styling conventions our components are built to (MIT)
• Tabulator — The editable pilots grid (MIT)
• Lucide — Icon set (ISC)
• Sonner — Toast notifications (MIT)
• Tailwind CSS — Utility-first CSS framework, with clsx, tailwind-merge, class-variance-authority and tw-animate-css (MIT)
• KaTeX — Fast math typesetting for the scoring formulas (MIT)
• input-otp — One-time-code field for sign-in (MIT), and qrcode.react for the task and waypoint QR codes (ISC)
• Fontsource / Atkinson Hyperlegible Next — Self-hosted web font designed for readability, © the Atkinson Hyperlegible Next Project Authors, under the SIL Open Font License 1.1

Backend & Auth

• Hono — Web framework for Cloudflare Workers (MIT)
• Better Auth — Authentication library (MIT)
• Kysely — Type-safe SQL query builder, with kysely-d1 for Cloudflare D1 (MIT)
• Zod — Schema validation for the API request bodies (MIT)
• Sqids — Short, non-sequential public ids for competitions and tasks (MIT)

Build & Platform

• Vite — Build tool and dev server (MIT)
• Astro — Static site builder for the content pages (MIT)
• TypeScript — Typed JavaScript (Apache 2.0)
• Bun — JavaScript runtime, package manager and test runner (MIT)
• Vitest — Unit test runner for the frontend and the workers (MIT)
• Playwright — End-to-end browser tests (Apache 2.0)
• Cloudflare — Pages, Workers, D1, R2 and email hosting

AI

• Claude Code — AI coding assistant by Anthropic

Design Resources

• Free SVG Backgrounds and Patterns by SVGBackgrounds.com — SVG background patterns