Best DuckDB Alternatives in 2026

AK

Apache Kvrocks

Apache Kvrocks™

• ✓Namespace isolation with token-per-namespace
• ✓Async binlog-based replication
• ✓High Availability with Redis Sentinel

C

Celld

Self-hosted, distributed Durable Objects

• ✓Lease-based ownership
• ✓Isolated tenancy
• ✓Per-cell SQLite with LTX replication

C

Clickhouse

The Open Source OLAP database management system

• ✓Column-Oriented Storage
• ✓Real-Time SQL Analytics
• ✓Open-Source with Cloud-Friendly Deployment

E

Elastic

The open source platform that powers search, observability, security, and more

• ✓Open Source Search Stack
• ✓Search AI Platform
• ✓Observability & Security Suite

F

FerretDB

A truly Open Source MongoDB alternative, built on Postgres

• ✓MongoDB Driver Compatibility
• ✓PostgreSQL Backend
• ✓Tool and UI Compatibility

K

KeyDB

A Database Built for Scale

• ✓MVCC Non-Blocking Architecture
• ✓Cross Region Multi-Master Support
• ✓High Throughput & Multithreading

L

Litestream

Streaming SQLite Replication

• ✓Real-time replication
• ✓Backups to object storage
• ✓Standalone process integration

M

MySQL

The world's most popular open source database

• ✓HeatWave
• ✓MySQL AI Integration
• ✓Enterprise Edition

N

Neon

Neon Serverless Postgres

N

Nile

PostgreSQL re-engineered for multi-tenant apps

• ✓Tenant-aware architecture
• ✓Serverless compute & auto-scaling
• ✓AI-native tooling & integrations

P

PlanetScale

The database for developers

• ✓Horizontal sharding (Vitess)
• ✓NVMe-backed storage
• ✓Postgres and Vitess options

P

PostgreSQL

The world's most advanced open source database

• ✓Reliability & durability
• ✓Performance & scalability
• ✓Extensibility & modern features