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The Definitive Guide to Elasticsearch 中文版
The Definitive Guide to Elasticsearch
Spring Data Elasticsearch
ELKstack 中文指南
Elasticsearch 入坑指北
Elasticsearch 中文指南
Mastering Elasticsearch 中文版
Elasticsearch DSL
Elasticsearch Chef Cookbook

elasticsearch-head - A web front end for an elastic search cluster.
ElasticHQ - Monitoring, management, and querying web interface for elasticsearch instances and clusters.
ElasticHD - ElasticHD is a ElasticSearch visual management tool. It does not require any software.
dejavu - The Missing Web UI for Elasticsearch.
IK Analysis for Elasticsearch
Smart Chinese Analysis Plugin for Elasticsearch
ElasticSearch Paramedic - A simple tool to inspect the state and statistics about elasticsearch clusters.
kopf - Web admin interface for elasticsearch.
Bigdesk - Live charts and statistics for elasticsearch cluster.
Search Guard
Readonly REST Elasticsearch Plugin - Safely expose Elasticsearch REST API directly to the public.
elasticdump - Tools for moving and saving indicies.
elasticsearch-migration - An elasticsearch migration tool.
elasticsearch-knapsack - Knapsack plugin is an import/export tool for Elasticsearch.
elasticsearch-learning-to-rank - Plugin to integrate Learning to Rank with Elasticsearch.
Elasticsearch-SQL - Use SQL to query Elasticsearch.
Elasticsearch Hadoop - Elasticsearch real-time search and analytics natively integrated with Hadoop.
elasticsearch-jdbc - JDBC importer for Elasticsearch.
Exceptionless - Exceptionless server and jobs.
Searchkit - React UI components/widgets.The easiest way to build a great search experience with Elasticsearch.
Raigad - Co-Process for backup/recovery, Auto Deployments and Centralized Configuration management for ElasticSearch.
Elasticsearch-zabbix - Elasticsearch template and script for zabbix.
Elasticsearch Exporter - Elasticsearch stats exporter for Prometheus.
Prometheus Exporter Plugin for ElasticSearch - Prometheus exporter plugin for ElasticSearch.
Prometheus Elasticsearch Exporter - Prometheus Elasticsearch Exporter.
ElastAlert - Easy & Flexible Alerting With ElasticSearch.
Python Elasticsearch Client
elasticsearch-lua

Kibana plugin: Own Home - Multi-tenancy for Kibana.
kaae - Kibana Alert & Report App for Elasticsearch.
LogTrail - Kibana plugin to view, search & live tail log events.

百度改进的Elasticsearch - Baidu Elasticsearch.
Graylog - Free and open source log management.
hangout - 用java实现一下logstash的几个常用input/filter/output.