# plangs!

> A database of programming languages and their relationships (paradigms, type
> systems, platforms, licenses, influences, tooling). Static, open data.

## Dataset

- Full graph JSON: https://plangs.page/data/plangs.json
  Shape: {vertices: {kind: {key: data}}, edges: {edgeName: {fromKey: [toKey]}}}
- Per-node JSON: https://plangs.page/data/nodes/{kind}/{slug}.json (e.g. /data/nodes/plang/nim.json)
- Compact facet index per grid: https://plangs.page/data/facets/{kind}.json
- Every page has a clean markdown twin at the same path + ".md"
  (e.g. https://plangs.page/nim.md).

Node keys are "prefix/slug" (pl/nim, para/oop, lic/mit) EVERYWHERE, including
the full graph JSON. Older copies of that one file keyed vertices and edges as
"pl+nim"; that form is gone and was never announced as stable. Pages live at
https://plangs.page/{slug} for languages and https://plangs.page/{kind}/{slug} for everything else.

## URL grammar (constructable filters)

The language grid at https://plangs.page/plangs accepts readable query params:

- paradigms=<slug>,<slug>   e.g. paradigms=functional,logic
- tags=<slug>,<slug>
- platforms=<slug>,<slug>
- mode=all|any              (default: any — match any selected value)

Example: https://plangs.page/plangs?paradigms=functional&platforms=web&mode=all

## Kinds

268 languages, plus tools, libraries, paradigms,
type systems, platforms, licenses, tags, communities and learning resources.

## Popular languages (by Languish ranking)

- [Python](https://plangs.page/python) — https://plangs.page/python.md
- [JavaScript](https://plangs.page/javascript) — https://plangs.page/javascript.md
- [TypeScript](https://plangs.page/typescript) — https://plangs.page/typescript.md
- [Java](https://plangs.page/java) — https://plangs.page/java.md
- [C#](https://plangs.page/c-sharp) — https://plangs.page/c-sharp.md
- [C++](https://plangs.page/c++) — https://plangs.page/c++.md
- [Go](https://plangs.page/go) — https://plangs.page/go.md
- [HTML](https://plangs.page/html) — https://plangs.page/html.md
- [Rust](https://plangs.page/rust) — https://plangs.page/rust.md
- [C](https://plangs.page/c) — https://plangs.page/c.md
- [PHP](https://plangs.page/php) — https://plangs.page/php.md
- [CSS](https://plangs.page/css) — https://plangs.page/css.md
- [Jupyter Notebook](https://plangs.page/jupyter-notebook) — https://plangs.page/jupyter-notebook.md
- [Kotlin](https://plangs.page/kotlin) — https://plangs.page/kotlin.md
- [R](https://plangs.page/r) — https://plangs.page/r.md
- [Swift](https://plangs.page/swift) — https://plangs.page/swift.md
- [SQL](https://plangs.page/sql) — https://plangs.page/sql.md
- [Dart](https://plangs.page/dart) — https://plangs.page/dart.md
- [ASP.NET](https://plangs.page/asp.net) — https://plangs.page/asp.net.md
- [Vue](https://plangs.page/vue) — https://plangs.page/vue.md
- [PowerShell](https://plangs.page/powershell) — https://plangs.page/powershell.md
- [JSON](https://plangs.page/json) — https://plangs.page/json.md
- [Lua](https://plangs.page/lua) — https://plangs.page/lua.md
- [Ruby](https://plangs.page/ruby) — https://plangs.page/ruby.md
- [Batchfile](https://plangs.page/batchfile) — https://plangs.page/batchfile.md
- [Svelte](https://plangs.page/svelte) — https://plangs.page/svelte.md
- [XML](https://plangs.page/xml) — https://plangs.page/xml.md
- [CMake](https://plangs.page/cmake) — https://plangs.page/cmake.md
- [Objective-C](https://plangs.page/objective-c) — https://plangs.page/objective-c.md
- [Markdown](https://plangs.page/markdown) — https://plangs.page/markdown.md