Kdb+ (KX)

Best Self Hosted Alternatives to Kdb+ (KX)

A curated collection of the 1 best self hosted alternatives to Kdb+ (KX).

High-performance time-series and vector database with the q language providing real-time and historical data storage, ultra-low-latency queries, high-throughput streaming ingestion, and analytics for financial markets, IoT, and other time-sensitive applications.

Alternatives List

#1
InfluxDB

InfluxDB

InfluxDB is an open source time-series database for high-ingest metrics and event data, enabling fast queries for monitoring, dashboards, and real-time analytics.

InfluxDB screenshot

InfluxDB is a database built to collect, process, transform, and store event and time series data. It is designed for high ingest rates and low-latency queries to support monitoring, analytics, and real-time applications.

Key Features

  • High-throughput ingestion for metrics and event streams
  • Low-latency querying for recent and last-value time-series workloads
  • SQL query engine with HTTP query API and FlightSQL support
  • InfluxQL compatibility for InfluxDB 1.x query use cases
  • Write API compatibility with InfluxDB 1.x and 2.x
  • Parquet-based persistence and optimized storage for time-series data
  • Plugin and trigger capabilities via an embedded Python VM

Use Cases

  • Infrastructure and application monitoring with interactive dashboards
  • IoT and sensor telemetry collection and analysis
  • Real-time analytics for systems such as networks, industrial equipment, or trading signals

InfluxDB is commonly used as the storage and query layer for time-series observability and operational analytics stacks. It fits environments ranging from edge deployments to large-scale systems where near real-time insights are required.

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Why choose an open source alternative?

  • Data ownership: Keep your data on your own servers
  • No vendor lock-in: Freedom to switch or modify at any time
  • Cost savings: Reduce or eliminate subscription fees
  • Transparency: Audit the code and know exactly what's running