Rubber is a native macOS application that provides a fast, convenient GUI for working with Elasticsearch and OpenSearch. Browse indices, inspect documents, run Query DSL requests, execute REST API calls, and manage cluster resources—all with a clean macOS-native interface. Viewer Mode — Explore and Modify Data A visual interface for interacting with Elasticsearch and OpenSearch data structures. - View responses as tables or raw JSON - Create, edit, and delete indices - Create, edit, and delete documents - Manage aliases and switch alias targets - Full JSON syntax highlighting - Save queries for reuse - Pin frequently used indices and aliases - Work across multiple tabs - Ideal for inspecting indices, documents, mappings, and search results. REST Mode — Elasticsearch/OpenSearch REST API Console A streamlined console built specifically for Elasticsearch/OpenSearch APIs. - Send arbitrary REST API requests - Execute Query DSL, mappings, index settings, search, aggregations, and cluster endpoints - Built-in support for bulk API operations - Save requests for later use - Multi-tab workflow for parallel testing and debugging - Works with the full Elasticsearch/OpenSearch REST API surface. Professional Features Built for developers, SREs, DevOps, and data engineers. - Multiple connection profiles - Full mutual TLS (mTLS) support - Support for compressed responses - Secure credential and key storage via macOS Keychain - Reliable handling of large JSON responses - Reorderable layout: hide, show, and move interface panels - Light and dark themes - Native macOS performance and smooth UI Compatibility - Elasticsearch versions 6, 7, 8, 9 - All versions of OpenSearch - 100% native macOS application (no Java required) Why Developers Use Rubber - Faster and cleaner workflow than other Dev Tools - Quick access to indices, aliases, mappings, and documents - No browser overhead, no slow tabs, no memory issues - Designed for macOS, responsive even with large datasets - Saves time during debugging, query exploration, and index inspection