18 self-hosted Elastic Cloud (Elasticsearch Service) alternatives

Meilisearch is a lightning-fast search engine API for apps and websites, offering typo-tolerant full-text search plus vector and AI-ready hybrid retrieval.

58.8k stars2.6k forkslast commit 25 Jul 2026Actively maintained

Open-source OLAP database designed for real-time analytics at scale.

48.9k stars8.7k forksApache-2.0last commit 28 Jul 2026Actively maintained

Open-source platform for AI chat, RAG, agents, and enterprise search across your team’s connected knowledge sources, compatible with hosted and local LLMs.

31.2k stars4.3k forkslast commit 28 Jul 2026Actively maintained

Typesense is a developer-friendly search engine for instant, typo-tolerant search-as-you-type with faceting, filtering, geo search, and vector/semantic search APIs.

26.4k stars960 forksGPL-3.0last commit 27 Jul 2026Actively maintained

Open-source observability pipeline to collect, transform, and route logs and metrics with a single, high-performance binary and programmable transforms.

22.2k stars2.2k forksMPL-2.0last commit 27 Jul 2026Actively maintained

ZincSearch is a Go-based, lightweight search engine for full-text indexing with Elasticsearch API-compatible ingestion, a Vue UI, and a schema-less document model.

17.9k stars776 forkslast commit 9 Jun 2026Actively maintained

Apache Druid is a real-time analytics (OLAP) database delivering sub-second queries on streaming and batch data with high concurrency at scale.

14k stars3.8k forksApache-2.0last commit 28 Jul 2026Actively maintained

OpenSearch is an Apache 2.0 open source distributed search and analytics engine for indexing, querying, and analyzing large-scale data with REST APIs.

13.4k stars2.8k forksApache-2.0last commit 24 Jul 2026Actively maintained

Manticore Search is a fast open-source search database for full-text, faceted, and vector search with SQL (MySQL protocol) and HTTP JSON APIs.

11.9k stars634 forksGPL-3.0last commit 27 Jul 2026Actively maintained

Open-source cloud-native search engine for observability data on object storage with an Elasticsearch/OpenSearch-compatible API.

11.4k stars571 forksApache-2.0last commit 27 Jul 2026Actively maintained

Graylog is an open source platform for collecting, indexing, searching, and alerting on logs and machine data from many sources in one place.

8.1k stars1.1k forkslast commit 28 Jul 2026Actively maintained

Parseable ingests, analyzes, and extracts insights from MELT telemetry data with predictive analytics and a unified SQL/NL querying interface.

2.4k stars167 forksAGPL-3.0last commit 22 Jul 2026Actively maintained

Aleph indexes documents and structured datasets to enable fast search, entity extraction, and cross-referencing for investigative research and OSINT workflows.

2.4k stars350 forksMITlast commit 19 Dec 2025Slowing down

Diskover indexes file systems with Elasticsearch to provide fast file search, metadata analytics, and storage visibility across on-prem, NAS, and cloud storage.

1.8k stars184 forksApache-2.0last commit 19 Feb 2026Actively maintained

Scalable enterprise search platform supporting full-text, vector, faceted and geospatial search with SolrCloud clustering and a web admin UI.

1.6k stars847 forksApache-2.0last commit 27 Jul 2026Actively maintained

sist2 is a fast, low-memory file system indexer with a web UI for searching file contents and metadata, with Elasticsearch or SQLite backends.

1.3k stars78 forksGPL-3.0last commit 5 Jul 2025Slowing down

Fess is an open-source enterprise search server with a built-in crawler, web-based administration, and OpenSearch/Elasticsearch-backed full-text search.

1.1k stars173 forksApache-2.0last commit 20 Jul 2026Actively maintained

Lightweight web UI and REST control plane for exploring, inspecting, and managing Apache Iceberg catalogs and tables with Docker deployment and engine integrations.

468 stars31 forksApache-2.0last commit 12 Jan 2026Slowing down