The most comprehensive database of Chinese poetry 🧶最全中华古诗词数据库, 唐宋两朝近一万四千古诗人, 接近5.5万首唐诗加26万宋诗. 两宋时期1564位词人，21050首词。

适合2到6岁的宝宝打字游戏

Feature Flags for Java made easy

Apollo is a reliable configuration management system suitable for microservice configuration management scenarios.

Redisson - Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava/Reactive API. Over 50 Redis or Valkey based Java objects and services: Set, Multimap, SortedSet, …

微服务日志之实时日志

ClickHouse® is a real-time analytics DBMS

如果你在从事大数据BI的工作，想对比一下MySQL、GreenPlum、Elasticsearch、Hive、Spark SQL、Presto、Impala、Drill、HAWQ、Druid、Pinot、Kylin、ClickHouse、Kudu等不同实现方案之间的表现，那你就需要一份标准的数据进行测试，这个开源项目就是为了生成这样的标准数据。

Your window into the Elastic Stack

Apache Pinot - A realtime distributed OLAP datastore

WebUI for query engines: Hive and Presto

Web UI for PrestoDB.

Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.

Redash plugin for Apache Kylin integration

High performance file syncing and sharing, with also Markdown WYSIWYG editing, Wiki, file label and other knowledge management features.

Some information about Apache Kylin interaction with Pentaho Mondrian

Saiku Analytics - The Worlds Greatest Open Source OLAP Browser

Pentaho Data Integration ( ETL ) a.k.a Kettle

Apache Druid: a high performance real-time analytics database.

Mirror of Apache Oozie

Apache Curator

Apache ZooKeeper

Apache Impala

The Apache Tika toolkit detects and extracts metadata and text from over a thousand different file types (such as PPT, XLS, and PDF).

Apache Calcite

Apache Cassandra®

Apache Hadoop

Apache Flink

Apache Storm

Apache HBase