PostgreSQL compatibility. Native vector search. Git-like branching.
From embedded edge to frontier distributed — one platform, three tiers.
-- Native vector search with PostgreSQL syntax
CREATE TABLE documents (
id SERIAL PRIMARY KEY,
content TEXT,
embedding VECTOR(768)
);
SELECT content, embedding <=> $query AS distance
FROM documents
ORDER BY distance LIMIT 10;| Feature | SQLite | PostgreSQL | HeliosDB |
|---|---|---|---|
| Zero-config deployment | ✓ | ✗ | ✓ |
| PostgreSQL wire protocol | ✗ | ✓ | ✓ |
| Native vector search | ✗ | Extension | Built-in |
| Database branching | ✗ | ✗ | ✓ |
| Time-travel queries | ✗ | ✗ | ✓ |
| Enterprise encryption | ✗ | Extension | Built-in |
| Multi-tenant RLS | ✗ | ✓ | ✓ |
HeliosDB combines the best features from embedded databases, enterprise databases, and vector databases—all in a single, lightweight package.
HNSW indexing with 384x compression via Product Quantization. 1K-5K queries/sec on standard hardware. Works with any embedding model.
The only SQL database with Git-like branching at the storage layer. Zero-cost copy-on-write branches for schema testing and A/B experiments.
Query any point in your database's history with AS OF syntax. Audit compliance, debug production issues, and recover data without restoring backups.
AES-256-GCM encryption at rest, Zero-Knowledge Encryption with client-side keys, FIPS 140-3 compliance, and Row-Level Security for multi-tenancy.
Handle transactional and analytical workloads in one database. Columnar storage with Apache Arrow, SIMD acceleration, and auto-refreshing materialized views.
95%+ SQL compatibility. Wire protocol works with psql, DBeaver, pgAdmin, and all major ORMs: SQLAlchemy, Diesel, Prisma, SQLx.
From embedded prototyping to frontier distributed systems. Choose the tier that fits your scale, migrate seamlessly as you grow.
v3.6.0
Lightweight embedded database for AI applications, edge devices, and single-server deployments. SQLite simplicity with PostgreSQL power.
v3.5.8
Production-ready edge database with HeliosProxy—the flagship connection router with multi-tier caching, GraphQL gateway, and intelligent routing.
v7.1.0
Enterprise distributed database with 193 crates, 14 native protocol adapters, Raft consensus, and research features including quantum and GPU acceleration.
From AI/ML infrastructure to genomics research, HeliosDB powers applications across every sector.
HNSW indexing with sub-millisecond latency for semantic search, RAG pipelines, and recommendation engines.
Retrieval-Augmented Generation with semantic document retrieval and hybrid BM25+vector ranking.
Persistent memory for AI agents and autonomous systems with conversation history and knowledge graphs.
Native RAG database architecture with built-in embedding generation and semantic caching.
Search across text, image, audio, and video modalities with unified vector indexing.
ML-powered anomaly detection for real-time monitoring and alerting on data streams.
Natural language business intelligence — ask questions in plain English and get SQL results.
AI-powered query optimization that learns from workload patterns and adapts execution plans.
In-database ML model lifecycle management with versioning, A/B testing, and deployment.
Privacy-preserving federated learning across distributed nodes without centralizing data.
Predictive capacity planning using ML to forecast storage and compute needs.
ML-based automatic data placement across hot, warm, and cold storage tiers.
Combined BM25 full-text + semantic vector ranking for best-of-both-worlds retrieval.
Understanding query intent to choose optimal execution strategies and index paths.
AI-driven data integration and transformation with automatic schema mapping.
Reinforcement learning optimized cache management adapting to workload patterns.
Predictive data prefetching using ML models trained on access patterns.
In-database time-series forecasting with automatic model selection.
Describe your data model in natural language and get optimized schema DDL.
Autonomous database agents that handle maintenance, optimization, and scaling.
Git-like workflows for databases — branch, test, merge with zero-cost copy-on-write.
Native multi-tenancy with Row-Level Security and per-tenant resource quotas.
Single database supporting 14 native protocols: PostgreSQL, MySQL, MongoDB, Redis, and more.
Autonomous self-healing infrastructure that detects and recovers from failures.
Conflict-free replicated data types for true multi-master replication without conflicts.
Full SaaS platform support with true tenant isolation, billing, and feature flags.
Granular per-tenant resource limits and monitoring for fair resource allocation.
Comprehensive resource governance framework with policies and enforcement.
Declarative database configuration managed like infrastructure-as-code.
Per-tenant replication strategies with different SLAs per tenant.
Write stored procedures in PL/pgSQL, PL/SQL, T-SQL, or DB2 SQL PL.
Oracle DBMS package compatibility for seamless enterprise migration.
Enterprise webhook system for event-driven integration with external services.
Extend database functionality with WebAssembly plugins for custom processing.
Unified secrets management across AWS, GCP, and Azure cloud providers.
Automated database migration workflows with schema diff and rollback.
Low-code/no-code database platform for citizen developers.
ML-optimized connection pooling with workload-aware routing.
Query across multiple data sources with a unified SQL interface.
Unified API gateway supporting REST, GraphQL, gRPC, and WebSocket.
Query external data sources as if they were local tables.
Unified query interface for relational, document, graph, and time-series data.
Scheduler-based workload isolation preventing noisy neighbors.
Automatic circuit breaker pattern for fault-tolerant distributed operations.
Multi-armed bandit algorithm for adaptive, intelligent load balancing.
Transparent data encryption (AES-256-GCM) for HIPAA, PCI-DSS, and GDPR compliance.
Enterprise-grade tamper-proof audit logs with cryptographic checksums and 7-year retention.
Privacy-by-design with data masking, anonymization, and differential privacy.
Immutable blockchain-based audit trails for regulatory compliance.
Quantum-resistant encryption algorithms for future-proof security.
Automated compliance checking against SOC2, HIPAA, GDPR, PCI-DSS frameworks.
Multi-cloud deployment with data residency controls and geo-fencing.
Attribute-based access control with XACML policy engine.
ACID compliance with serializable snapshot isolation for financial workloads.
OpenTelemetry-integrated observability with traces, metrics, and logs.
Live schema migrations with zero downtime and automatic rollback.
Distributed deadlock detection and prevention with automatic resolution.
End-to-end data provenance and lineage across transformations.
AI-powered data quality monitoring, profiling, and remediation.
Real-time anomaly detection on data streams with adaptive thresholds.
Pre-computed query results with intelligent auto-refresh and CPU-aware scheduling.
Automatic query optimization with cost-based planning and plan caching.
AI-powered index recommendation system analyzing query patterns.
Sub-second analytics with real-time aggregations for live dashboards.
Real-time stream processing with windowed aggregations and event-time semantics.
Unified lakehouse and OLTP with Apache Iceberg integration.
Quantum-inspired algorithms (QAOA, VQE) for complex query optimization.
GPU-accelerated query execution with CUDA and ROCm for 10-100x speedup.
Graph RAG hybrid transactional/analytical processing for knowledge graphs.
BlinkDB-style approximate query processing for instant results on big data.
Just-in-time query compilation for maximum execution speed.
Advanced ML-based cardinality estimation for optimal query plans.
Self-tuning index recommendations that adapt to changing workloads.
Intelligent query result caching with automatic invalidation.
Real-time query execution progress monitoring and visualization.
Lightweight database for edge devices, IoT sensors, and offline-first apps.
IoT monitoring with semantic time-series analysis and anomaly detection.
Location-based services with combined geospatial and semantic understanding.
Bidirectional edge-to-cloud database synchronization with conflict resolution.
Serverless database that auto-scales to zero when idle, pay only for use.
Green computing optimizations reducing energy consumption by up to 40%.
Run compute functions directly at the edge for ultra-low latency.
Same database API for embedded edge and cloud deployments.
Advanced compression (ZSTD, LZ4, ALP, FSST) reducing storage by 70-90%.
Point-in-time database access for audits, compliance, and incident investigation.
CDC with event streaming for real-time data integration pipelines.
Automated data tiering, retention policies, and archival workflows.
Trustless synchronization with blockchain-verified CRDT replication.
Proactive maintenance scheduling based on hardware and query telemetry.
Advanced backup and recovery with continuous archiving and PITR.
Intelligent data partitioning with automatic range and hash strategies.
Zero-downtime live shard rebalancing across cluster nodes.
Per-column adaptive compression selecting the best algorithm per data type.
Unified data catalog across transactional and analytical workloads.
Intelligent automated view refresh scheduling and dependency tracking.
Bloom filters, HyperLogLog, Count-Min Sketch for space-efficient analytics.
Paxos-based write-ahead log for distributed durability guarantees.
Optimized distributed shuffle operations for large-scale joins.
Model Context Protocol server for seamless AI development tool integration.
Native REST API for HTTP-based database access without drivers.
PostgreSQL-compatible LISTEN/NOTIFY with sub-millisecond latency.
Debug production issues by examining historical database states.
Visual query execution plan debugger with bottleneck identification.
Developer-controlled query hints for fine-tuning execution strategies.
Generate type-safe database client code from schema definitions.
Advanced recursive common table expression support for graph traversals.
Full window function support with custom frames and aggregates.
High-throughput bulk data import and export with parallel execution.
ML-based predictive auto-scaling anticipating load before spikes hit.
Cloud cost optimization with workload-aware resource right-sizing.
Multi-cloud deployment with automatic data residency enforcement.
Anticipatory scaling based on historical patterns and external signals.
Cold start optimization and automatic resource deallocation.
Carbon-aware scheduling reducing environmental impact.
Unified secrets rotation and management across cloud providers.
Seamless migration between embedded edge and cloud deployments.
95%+ PostgreSQL SQL compatibility with wire protocol support.
Flexible schema with JSONB type, GIN indexes, and JSON path queries.
Hybrid search combining full-text BM25 and semantic vector ranking.
Advanced document storage with schema validation and indexing.
Event sourcing and downstream CDC for microservices integration.
Connect to external PostgreSQL, MySQL, and REST data sources.
Stored procedures in 4 SQL dialects for enterprise migration.
Auto-generate type-safe client code from database schema.
Extend with custom WebAssembly stored procedures.
Full RAG application stack with embeddings, retrieval, and generation.
Automatic GraphQL schema generation from database tables.
High-performance gRPC interface for microservices communication.
DNA/RNA sequence storage, alignment algorithms, and petabyte-scale genomic processing.
Advanced geospatial queries with R-tree indexing and spatial joins.
3D data visualization and VR/AR database interaction.
Intel Loihi 2 integration with spiking neural networks for 1000x power savings.
CUDA/ROCm kernel fusion for maximum GPU query throughput.
QAOA, VQE, and quantum annealing for combinatorial optimization problems.
Hybrid graph + RAG for knowledge graph augmented generation.
Unified storage for text, images, audio, and structured data.
Desktop, mobile, CLI tools with single-file database deployment.
Complete SaaS platform with billing, feature flags, and tenant isolation.
ML-estimated query completion times and resource consumption.
Byzantine fault-tolerant synchronization with CRDT conflict resolution.
// Three lines to a working database
let db = HeliosDB::open("myapp.db")?;
db.execute("CREATE TABLE users (
id SERIAL PRIMARY KEY,
name TEXT,
embedding VECTOR(768)
)")?;
// Semantic search in one query
let results = db.query("
SELECT name, embedding <=> $1 AS distance
FROM users ORDER BY distance LIMIT 10
", &[&query_vec])?;# pip install heliosdb-lite
import heliosdb
db = heliosdb.connect("myapp.db")
db.execute("""
CREATE TABLE documents (
id SERIAL PRIMARY KEY,
content TEXT,
embedding VECTOR(768)
)
""")
# Works with LangChain and LlamaIndex
results = db.query(
"SELECT * FROM documents ORDER BY embedding <=> %s LIMIT 10",
[query_embedding]
)// npm install heliosdb-lite
import { HeliosDB } from 'heliosdb-lite';
const db = await HeliosDB.open('myapp.db');
await db.execute(`
CREATE TABLE documents (
id SERIAL PRIMARY KEY,
content TEXT,
embedding VECTOR(768)
)
`);
// Type-safe queries with Prisma support
const results = await db.query(
'SELECT * FROM documents ORDER BY embedding <=> $1 LIMIT 10',
[queryEmbedding]
);# Install and start in seconds
curl -sSf https://install.heliosdb.dev | sh
# Interactive REPL
heliosdb-lite repl --memory
# Or start as a server
heliosdb-lite start --port 5432
# Connect with any PostgreSQL client
psql -h localhost -p 5432 -d mydb
# Branch your database like Git
heliosdb-lite branch create feature-auth
heliosdb-lite branch switch feature-authRust, Python, TypeScript, Go, Java, C#, Ruby
Axum, FastAPI, Express, Spring Boot, Rails
LangChain, LlamaIndex, OpenAI, AutoGen, CrewAI
Embedded, Server, In-Memory, Hybrid
The database market is $100B+ and growing. AI applications demand new capabilities — native vector search, semantic caching, and intelligent query optimization — that legacy databases can't deliver without bolted-on extensions.
Open-source core (Apache 2.0) with enterprise features driving revenue. Three-tier product architecture enables land-and-expand from developer adoption to enterprise contracts.
Database engineers, systems programmers, and developer advocates building the database developers deserve. Backed by a mission to make powerful database capabilities accessible to every developer.
Contact Us →Open source at the core. Pay only when you need enterprise features or support.
Everything you need to build and deploy.
For growing teams and production workloads.
For regulated industries and high-scale deployments.
Join 50,000+ developers building with HeliosDB.