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Plugins & Marketplace

Much of GeoLibre's functionality ships as plugins. The Plugins menu activates built-in plugins, and the Manage Plugins dialog (under Settings) installs, updates, and removes external plugins from a curated registry.

The Plugins menu

The Plugins menu lists every available plugin under Activate plugin. Click a plugin to toggle it on or off; a check mark shows which are active.

The Plugins menu, listing every built-in plugin under Activate plugin

The built-in plugins are:

Plugin What it adds
Layer Control The on-map layer list. On by default.
GeoEditor Drawing, vertex editing, and deletion tools for GeoJSON layers.
Annotations The map-annotation toolbar and Elements panel. See Annotations.
Basemaps A basemap gallery for switching the background map, from the same catalog as the Change basemap dialog.
Web Services A submenu of catalog and service browsers: FEMA NFHL, NASA Earthdata, US EPA EnviroAtlas, USGS National Map, USGS NLDI, Vantor Open Data, Planet Open Data, Earthdata GIS, OpenAerialMap, ArcGIS Hub, Socrata, CKAN, STAC Catalogs, Source Cooperative, Natural Earth, Hugging Face, and GeoLens. See Web Services.
Historical Imagery Browse historical aerial and satellite imagery for a location.
Time Slider Filter a temporal layer by a date or number field.
Timelapse Animate annual cloudless basemaps (EOX Sentinel-2, and NASA GIBS Landsat/WELD and MODIS land cover) with a provider picker and legend.
Overture Maps Browse and add Overture Maps themes.
GeoAgent An in-map AI agent panel.
USGS LiDAR Clip a USGS point cloud to an area of interest and download the result as COPC.
Street View Google Street View panoramas at a clicked point.
Mapillary Mapillary street-level imagery.
Elevation Profile A terrain profile along a drawn line, or along the line features currently selected on a layer.
Layer Swipe A swipe bar comparing two layers.
DGGS A submenu of discrete global grid overlays — H3, S2, A5, DGGRID, DGGAL, OLC, Geohash, and Tilecode — each rendering its grid over the current view, identifying a cell, and exporting the grid or selection.
Flight Simulator Fly over terrain and 3D layers with keyboard controls.
SamGeo Segment imagery into vector features. See AI Segmentation.

Most entries open a submenu that activates the plugin and positions its on-map control in any corner: top left, top right, bottom left, or bottom right. A few behave differently: Flight Simulator and SamGeo toggle directly with no submenu, and Web Services and DGGS open a list of their sub-plugins instead.

A plugin submenu, with Activate above the four map-corner positions

Components live on the Controls menu

Measure, Bookmark, Legend, Colorbar, Minimap, View State, Search, and HTML are on-map component panels rather than Plugins-menu entries; toggle them from the Controls menu. The Print composer is under Project → Print Layout.

Manage Plugins

Open Settings → Manage Plugins to browse the marketplace. The dialog is modeled on QGIS, with sections for All, Installed, Not installed, Upgradeable, and Settings.

The Manage Plugins dialog, listing the curated registry with Install buttons

  • Search the registry and Install an entry with one click. Installation records the plugin's manifest URL and registers it immediately, with no restart.
  • Update appears when a newer version is published; it re-fetches and re-registers the plugin in place, keeping the old version if the update fails.
  • Uninstall (after a confirmation) unregisters the plugin at runtime and tears down any active control.
  • The Settings section manages additional plugin sources: extra local directories and manual manifest URLs.

Compatibility is checked against each entry's minGeoLibreVersion, so incompatible plugins are flagged rather than installed.

Trust model

The registry is a curated allowlist, manifests require HTTPS (or HTTP on localhost, 127.0.0.1, or [::1] for development), and every install requires explicit consent, because plugins run as trusted code. The curated registry and the install confirmation are the primary safeguards.

Where plugins come from

  • Curated registry: the marketplace fetches a versioned JSON registry, hosted by default at plugins.geolibre.app. The registry and plugin bundles live in the opengeos/geolibre-plugins repository.
  • Manifest URL: point the Settings section at any plugin.json manifest URL.
  • Local directory: load a plugin from a local folder (desktop app).
  • Bundled drop-ins: plugins placed in public/plugins/<id>/ load automatically in a build.

Writing your own plugin

To build a plugin, see Reference → Plugin API for the TypeScript interfaces, the plugin.json manifest contract, and the list of built-in plugins.

USGS NLDI

See USGS NLDI workflows for point-to-flowline tracing, hydrolocation, upstream basin, COMID navigation, and GeoJSON export. It is activated from the Web Services submenu.