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Apache IoTDB vs OSIsoft PI

Apache IoTDB: Apache time-series database for industrial IoT with tree and table models and edge-to-cloud sync. OSIsoft PI: The dominant industrial data historian: time-series storage plus asset context for plants and grids.

key differences

  • Licensing: Apache IoTDB is open source (permissive) (Apache License 2.0); OSIsoft PI is proprietary (Commercial (AVEVA)).
  • Horizontal scaling is native in Apache IoTDB and manual in OSIsoft PI.
  • Transactions: Apache IoTDB offers none ACID; OSIsoft PI offers limited.
  • Only Apache IoTDB has joins, triggers, ttl / expiry, pub/sub, columnar storage.

choose apache-iotdb for

  • +Industrial equipment and PLC data
  • +Power plant and wind turbine monitoring
  • +Edge gateways syncing to a central cluster
  • +Rail and vehicle telemetry

best at · IoT, Time-series, Edge

choose osisoft-pi for

  • +Plant and process historian for OT data
  • +Grid, pipeline and utility network monitoring
  • +Equipment condition monitoring and predictive maintenance feeds
  • +Regulatory records of operational data

best at · Time-series, IoT, Real-time analytics

Apache IoTDBApache time-series database for industrial IoT with tree and table models and edge-to-cloud sync.
OSIsoft PIThe dominant industrial data historian: time-series storage plus asset context for plants and grids.
overview
Primary model
Time-Series
Time-Series
Also supports
Relational, Hierarchical
Hierarchical
Type
Database engine
Database engine
Status
Active
Active
Developer
Apache Software Foundation
AVEVA (formerly OSIsoft)
First release
2019
1980
Latest version
2.0.11 (Sep 11, 2026)
–
License
Open source (permissive)Apache License 2.0
ProprietaryCommercial (AVEVA)
Free tier
✓
—
popularity
WhichDB Score
22.8
6.4
Rank
#133
#362
GitHub stars
6.4K
–
Stack Overflow questions
514
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Manual
Multi-region
None
Read replicas
ACID
None
Limited
Consistency
Tunable
Eventual
Schema
Flexible
Strict
Architecture
Single node, Distributed, Client server
Client server, Primary replica
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
✓
Serverless
—
—
Embedded
—
—
Edge
✓
—
Clouds
–
–
capabilities
Transactions
—
—
Joins
✓
—
Secondary indexes
—
—
Full-text search
—
—
Vector search
—
—
Geospatial
—
—
JSON
—
—
Change data capture
—
—
Triggers
✓
—
Stored procedures
—
—
Materialized views
—
—
TTL / expiry
✓
—
Pub/Sub
✓
—
Columnar storage
✓
—
In-memory
—
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
—
—
Role-based access
✓
✓
Time travel
—
—
Branching
—
—
Online schema changes
—
—
Streaming ingest
✓
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL
SQL (PI SQL Data Access), PI Performance Equations
Client languages
Java, Python, C++, Go, C#
.NET, REST
Best for
IoT, Time-series, Edge, Real-time analytics
Time-series, IoT, Real-time analytics
Add more to this comparisonNot sure either fits? Try smart match

Apache IoTDB vs OSIsoft PI: FAQ

What is the difference between Apache IoTDB and OSIsoft PI?

Apache IoTDB: Apache time-series database for industrial IoT with tree and table models and edge-to-cloud sync. OSIsoft PI: The dominant industrial data historian: time-series storage plus asset context for plants and grids. Licensing: Apache IoTDB is open source (permissive) (Apache License 2.0); OSIsoft PI is proprietary (Commercial (AVEVA)). Horizontal scaling is native in Apache IoTDB and manual in OSIsoft PI. Transactions: Apache IoTDB offers none ACID; OSIsoft PI offers limited.

When should I choose Apache IoTDB over OSIsoft PI?

Choose Apache IoTDB for industrial equipment and PLC data; power plant and wind turbine monitoring; and edge gateways syncing to a central cluster. Choose OSIsoft PI for plant and process historian for OT data; grid, pipeline and utility network monitoring; and equipment condition monitoring and predictive maintenance feeds.

Is Apache IoTDB or OSIsoft PI more popular?

Apache IoTDB ranks #133 on the WhichDB Score (22.8/100) and OSIsoft PI ranks #362 (6.4/100). Popularity is not fit: check the requirements that matter for your project.

Are Apache IoTDB and OSIsoft PI open source?

Yes. Apache IoTDB is open source. License: Apache License 2.0. No. OSIsoft PI is proprietary, closed-source software. License: Commercial (AVEVA).