GeoWave
While the core toolkit is generally applicable to multi-dimensional use cases, GeoWave has focused on tailored extensions to support spatial types and operators, with or without temporal timestamps or time ranges. Additionally, it provides advanced features to leverage a distributed backend for visualization or analysis. The software is intended to be easily pluggable into any sorted key-value store, and its modular design is intended to enable feature extension into various geospatial toolkits.