Design patterns implemented in Java

A high performance caching library for Java

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly co…

An open source multi-modal trip planner

The JTS Topology Suite is a Java library for creating and manipulating vector geometry.

A JSON Schema validation implementation in pure Java, which aims for correctness and performance, in that order

Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast

LocationTech Spatial4j: A Geospatial Library for Java

JSON Schema validator for java, based on the org.json API

Create custom vector tiles from OpenStreetMap and other data sources with Postgis and Java.

GeoWave provides geospatial and temporal indexing on top of Accumulo, HBase, BigTable, Cassandra, Kudu, Redis, RocksDB, and DynamoDB.

Run queries on your Java code to check if it meets the criteria suggested by the book Effective Java. And some others.

Canonical GTFS Validator project for schedule (static) files.

Developed to power Conveyal's web-based interface for scenario planning and land-use/transport accessibility analysis, R5 is our routing engine for multimodal (transit/bike/walk/car) networks with …

Java bindings for H3, a hierarchical hexagonal geospatial indexing system

In-memory Java DataFrame library

OSM in memory

A java encoder and decoder for vector tiles according to Mapbox vector tile spec

Fast and storage-efficient spatial database engine for OpenStreetMap data

A library for loading and saving GTFS feeds of arbitrary size with disk-backed storage

XYZ Hub is a RESTful web service for the access and management of geospatial data.

Android client for the Valhalla routing service plus mobile nav utilities

A library for opening, updating and manipulating OSM files of any size.

A tool for reversing an aggregated data set into the set from which it was produced.

Evaluate pulsing/timed transfer performance in transit systems.

android based augmented reality pokemon like adventure rpg