Appbase.io - Search stack for building modern apps
elasticsearch-gui - AngularJS Client for ElasticSearch as a plugin.
Searchkit - UI components for Elasticsearch
Kaizen - Kaizen is an ElasticSearch GUI for Windows, Mac and Linux, written in JavaFX as a cross-platform desktop application.
X to Elasticsearch Sync - CLI for importing MongoDB, SQL, CSV, JSON to Elasticsearch
Deja vu - A mind-blowing interactive piece to promote an album. Wow.