GRASS GIS vs NextGIS Web

GRASS GIS is a geospatial processing system for raster, vector, and other geographic data, including terrain, ecosystem, hydrology, data management, and imagery work. It contains more than 500 modules for processing and rendering geographic data, with tools for 3D voxel, temporal, image-processing, and spatial-statistics tasks alongside raster, terrain, hydrological, and vector analysis. Through GDAL-OGR, it supports nearly all common GIS file formats. Interfaces include a graphical user interface, command line, C API, Python, Jupyter Notebook, and WPS. GRASS integrates with QGIS and R and provides PostgreSQL and SQLite database interfaces; its official Addons repository has more than 300 extensions. It is free and open source under GPL (>=v2), with no warranty. The listed platforms include Linux, macOS, Windows, API, web, and self-hosted deployment. Prebuilt macOS applications are signed and notarized. Support includes a worldwide community as well as commercial consulting, training, and custom development.

NextGIS Web is an open-source Web GIS server for managing geospatial data and publishing browser maps. It keeps vector and raster data in a central database that users can work with through a web interface or API. Its map tools support feature editing and sharing, while QGIS Teamspace enables real-time editing of server data with QGIS tools. Built-in version control tracks vector feature changes and allows rollbacks and snapshots. Datasets can be delivered as raster or vector tiles, WMS, WFS, OGC API Features, or through the REST API. Integrations include PostgreSQL, external WMS/WFS/TMS services, and FIRMS fire monitoring. It can run on Linux with Docker, keeping data within a customer's infrastructure, or use cloud plans with US, EU, and APAC regions. The Free cloud plan allows one user, 15 layers, and 5 GiB of storage, with all resources public. Free plan; paid from €15/mo (annual).