All Algorithms implemented in Java

🔎 Open source distributed and RESTful search engine.

AI + Data, online. https://vespa.ai

👮‍♂️The sensitive word tool for java.(敏感词/违禁词/违法词/脏词。基于 DFA 算法实现的高性能 java 敏感词过滤工具框架。内置支持单词标签分类分级。请勿发布涉及政治、广告、营销、翻墙、违反国家法律法规等内容。高性能敏感词检测过滤组件，附带繁体简体互换，支持全角半角互换，汉字转拼音，模糊搜索等功能。)

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

Apache Lucene open-source search software

an open source geocoder for openstreetmap data

Material Design Search Bar for Android

Elassandra = Elasticsearch + Apache Cassandra

Apache Solr open-source search software

Fess is very powerful and easily deployable Enterprise Search Server.

Parser for RSQL / FIQL – query language for RESTful APIs

Lucene based secondary indexes for Cassandra

Open-source Enterprise Grade Search Engine Software

An easy to use, yet very customizable search dialog

Official Elasticsearch Java Client

Spark-Crawler: Apache Nutch-like crawler that runs on Apache Spark.

宇行地图：高仿高德地图Android客户端（持续更新中...）

专注于解决推荐领域与搜索领域的两个核心问题:排序预测(Ranking)和评分预测(Rating). 为相关领域的研发人员提供完整的通用设计与参考实现. 涵盖了70多种排序预测与评分预测算法,是最快最全的Java推荐与搜索引擎.

An Android library designed to simplify the process of implementing search-related functionality.