1.qgis / QGIS
QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)
+314 stars
from 14,457 · score 5.75
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
26 repositories by Attention Score · Oct 5, 2026 – Nov 3, 2026 (UTC)
2.organicmaps / organicmaps
🍃 Organic Maps is a free Android & iOS offline maps app for more than 6M travelers, tourists, hikers, and cyclists. It uses crowd-sourced OpenStreetMap data and is developed with love by the community. No ads, no tracking, no data collection, no crapware. Please donate to support the development!
+305 stars
from 15,560 · score 5.72
3.valhalla / valhalla
Open Source Routing Engine for OpenStreetMap
- openstreetmap
- dijkstra
- astar
- tiled
- directions
- isochrones
- +4 more
+132 stars
from 6,278 · score 4.89
4.Project-OSRM / osrm-backend
Open Source Routing Machine - C++ backend
- osrm
- cpp
- c-plus-plus
- routing
- routing-engine
- map-matching
- +5 more
+73 stars
from 8,117 · score 4.30
5.OSGeo / gdal
GDAL is an open source MIT licensed translator library for raster and vector geospatial data formats.
- raster
- geospatial-data
- vector
- remote-sensing
+50 stars
from 6,081 · score 3.93
6.motis-project / motis
multimodal routing, geocoding, and map tiles
- routing
- routing-engine
- gtfs
- intermodal
- real-time
- mobility
- +14 more
+24 stars
from 598 · score 3.22
7.google / s2geometry
Computational geometry and spatial indexing on the sphere
- geometry
- spherical-geometry
- s2
- spatial-indexing
+17 stars
from 2,730 · score 2.89
8.pgRouting / pgrouting
Repository contains pgRouting library. Development branch is "develop", stable branch is "master"
- postgis
- postgresql-extension
- routing
- spatial-analysis
- network-analysis
- osgeo
+11 stars
from 1,436 · score 2.48
9.PDAL / PDAL
PDAL is Point Data Abstraction Library. GDAL for point cloud data.
+9 stars
from 1,420 · score 2.30
10.ad-freiburg / loom
Software suite for the automated generation of geographically correct or schematic transit maps.
+9 stars
from 302 · score 2.30
11.raceintospace / raceintospace
This is the GitHub home of Race Into Space, the computer version of the Liftoff! board game by Fritz Bronner. It was developed by Strategic Visions and published by Interplay as a disk-based game in 1993 and a CD-ROM in 1994. It was open-sourced in 2005 and a number of improvements have been made over the original.
- lunar
- lunar-lander
- moon
- probe
- race
- satellite
- +1 more
+9 stars
from 228 · score 2.30
12.mapnik / mapnik
Mapnik is an open source toolkit for developing mapping applications
+8 stars
from 3,965 · score 2.20
13.drolbr / Overpass-API
A database engine to query the OpenStreetMap data.
+7 stars
from 932 · score 2.08
14.DLR-SC / tigl
The TiGL Geometry Library to process aircraft geometries in pre-design.
- opencascade
- aircraft
- c-plus-plus
- geometry
- b-spline
- cpacs
- +1 more
+7 stars
from 303 · score 2.08
15.OSGeo / PROJ
PROJ - Cartographic Projections and Coordinate Transformations Library
+6 stars
from 2,027 · score 1.95
16.GeomScale / volesti
Practical volume computation and sampling in high dimensions
- geometry
- statistics
- polyhedral-computations
- random-walk
- sampling
- volume
- +6 more
+6 stars
from 189 · score 1.95
17.fzi-forschungszentrum-informatik / Lanelet2
Map handling framework for automated driving
+5 stars
from 967 · score 1.79
+4 stars
from 1,070 · score 1.61
19.osmcode / libosmium
Fast and flexible C++ library for working with OpenStreetMap data.
- openstreetmap
- c-plus-plus
+3 stars
from 557 · score 1.39
20.jianboqi / CSF
LiDAR point cloud ground filtering / segmentation (bare earth extraction) method based on cloth simulation
+2 stars
from 650 · score 1.10
21.connormanning / entwine
Entwine - point cloud organization for massive datasets
+2 stars
from 530 · score 1.10
22.ad-freiburg / pfaedle
Precise map-matching for public transit feeds. Generates high-quality GTFS shapes from OSM data.
+2 stars
from 294 · score 1.10
23.reaktoro / reaktoro
a unified framework for modeling chemically reactive systems
- chemical-equilibrium
- chemical-kinetics
- reactive-transport
- chemical-reactions
- geochemical
- geochemical-modeling
+2 stars
from 220 · score 1.10
24.wildmeshing / TriWild
TriWild: Robust Triangulation with Curve Constraints
- traingulation
- meshing
- geometry-processing
+1 stars
from 264 · score 0.69
25.mapbox / wagyu
A general library for geometry operations of union, intersections, difference, and xor
- computational-geometry
- union
- intersection
- xor
- geometry
- difference
- +1 more
+1 stars
from 197 · score 0.69
26.gistrec / geo-utils-cpp
Tiny header-only C++17 library for lat/lng geometry: distance, bearing, area, point-in-polygon and path proximity
- cpp
- geometry
- geospatial
- gis
- gps
- haversine
- +9 more
+1 stars
from 54 · score 0.69