5 Best Open Source Kdb+ Alternatives
A curated collection of the 5 best open source and self-hosted alternatives to Kdb+ in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Kdb+ in 2026? The top open-source alternative is InfluxDB — InfluxDB handles high-velocity, high-resolution time series data at scale, built for telemetry, edge devices, IoT, and physical AI workloads..
Other highly rated open-source Kdb+ alternatives include TDengine, TimescaleDb and QuestDB.
InfluxDB handles high-velocity, high-resolution time series data at scale, built for telemetry, edge devices, IoT, and physical AI workloads.
InfluxDB handles high-velocity, high-resolution time series data at scale, built for telemetry, edge devices, IoT, and physical AI workloads.
High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments.
High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments.
PostgreSQL extension for time-series data with automatic partitioning, up to 95% columnar compression, continuous aggregates, and ~200 native SQL functions.
PostgreSQL extension for time-series data with automatic partitioning, up to 95% columnar compression, continuous aggregates, and ~200 native SQL functions.
Open-source time-series database offering massive ingestion throughput, millisecond queries, and SQL extensions, designed for optimal performance at any hardware scale.
Open-source time-series database offering massive ingestion throughput, millisecond queries, and SQL extensions, designed for optimal performance at any hardware scale.
Columnar, time-indexed analytics database built for streaming and batch data at scale, handling billions to trillions of rows with millisecond query response times.
Columnar, time-indexed analytics database built for streaming and batch data at scale, handling billions to trillions of rows with millisecond query response times.
About Kdb+
A time series database delivering time-oriented data insights and genAI capabilities to leading organizations.