TDengine is
Free Forever for Up to 5,000 tags
Full TDengine All-in-One experience included. Future upgrades included.
A modern PI System alternative and AI-ready industrial data foundation.
Free forever
Full experience
Future upgrades included
Register webinar to learn more about TDengine All-in-One
Why teams start with TDengine Free Tier
Not a trial, truly free
No time-limited, free forever for up to 5,000 tags.
Full experience
All capabilities included, no feature limits.
Start small, scale big
Grow from thousands to millions of tags with just a license upgrade.
AI-ready foundation
Clean, contextualized data ready for analytics and AI.
What’s included
Historian storage
High-performance time-series storage built for industrial scale.
Industrial data modeling
Assets, tags, hierarchies and templates that mirror operations.
Contextualization
Add semantics and context to turn raw data into meaningful insights.
Dashboards & trends
Interactive dashboards and rich real-time & historical trends.
Events
Capture, analyze and act on operational events.
Analytics
Powerful built-in analytics for monitoring and optimization.
Excel access
Native Excel add-in for point-and-click data exploration.
AI-ready workflows
Clean, contextual data pipelines for ML and AI use cases.
Industrial connectivity
Connect to PLCs, DCS, OPC UA, MQTT and enterprise systems.
Start in three simple steps
1
Download
Get TDengine All-in-One and install in minutes.
2
Watch tutorials
Learn TDengine All-in-One from first install to daily workflows.
3
Connect real data
Hook up your sources and start capturing in production.
Video tutorial
Your First 15 Minutes with TDengine 2.0
Create Panels and Dashboards with AI
Generate AI Operational Insights
Create and Analyze Events/Event Frames
Analyze Industrial Data with Analytics and AI
Connect Your First Industrial Data Source
TDengine Free Tier at a glance
| Item | TDengine Free Tier |
|---|---|
| Product | TDengine |
| Download | TDengine All-in-One Package |
| Cost | Free forever |
| Capacity | Up to 5,000 tags |
| Who can use it | Anyone—individuals, teams, and organizations of any size. No application or qualification is required |
| Permitted use | Evaluation, development, proof-of-concept projects, and production |
| License term | Valid for one year and renewable annually at no charge, with no limit on renewals |
| Functionality | Complete TDengine functionality, including data ingestion, time-series storage, industrial data modeling, visualization, event management, advanced analytics, reporting, AI insights, and all supported Enterprise zero-code Data In connectors |
| Performance | No artificial reduction in ingestion, query, analytics, or application performance |
| Deployment | Windows, Linux, or Docker; supports both single-node and multi-node high-availability deployment |
| Architecture options | Use the TDengine All-in-One Package with its bundled Enterprise TSDB, or connect the TDengine application layer to an existing TDengine TSDB OSS or Enterprise deployment |
| Bundled Enterprise TSDB | Included as TDengine’s dedicated data engine. It is not a free standalone TDengine TSDB Enterprise license |
| Third-party TSDB access | External data can be written into TDengine normally. Direct third-party queries to the bundled TSDB require a separate TDengine TSDB Enterprise license |
| License activation and renewal | Online registration and license activation are required on first use. Annual renewal is completed online through the system management interface |
| Support | Documentation, tutorials, and community support included; contact us for enterprise support and professional services. |
| Commercial upgrade | Upgrade by replacing the license. Existing data, configurations, dashboards, and analytics tasks remain in place |
FAQ
No. It is not a time-limited trial or a reduced-function edition. TDengine is free forever for deployments of up to 5,000 tags, with free annual license renewal.
Each Free Tier license is valid for one year. Beginning 30 days before expiration, TDengine displays a renewal reminder in the system management interface. You can renew online at no charge and receive another one-year license. There is no limit on the number of renewals.
Anyone can use it. The Free Tier is available to individuals, teams, and organizations of any size. No application, approval, or qualification is required.
Yes. You can use it for evaluation, development, proof-of-concept projects, and production deployments of up to 5,000 tags.
A tag is one independently measured time-series signal, typically represented by an asset or device combined with a measurement.
For example:
Pump-101 / Discharge Pressure
The sampling frequency does not change the tag count. Quality values, annotations, static attributes, and internal system-management time series are not counted as additional tags.
The Free Tier includes the complete TDengine platform:
- Industrial data ingestion and zero-code Data In connectors
- High-performance time-series data storage
- Industrial data modeling and contextualization
- Dashboards, trends, reports, and Canvas/P&ID visualization
- Event management and event frames
- Real-time and advanced analytics
- KPI calculations and reporting
- AI-powered insights
- Excel integration
- User management and role-based access control
- Single-node and multi-node high-availability deployment
These are the same core software capabilities available with commercial TDengine licensing.
No. The Free Tier does not remove application modules or artificially restrict functionality. Its main capacity limit is 5,000 tags.
Separate licensing rules apply to direct third-party queries against the Enterprise TSDB bundled with the TDengine All-in-One Package.
No. TDengine does not artificially throttle ingestion, queries, analytics, or application performance in the Free Tier. Actual performance depends on your infrastructure, configuration, and workload.
Yes. TDengine Free Tier supports deployments ranging from a single node to a multi-node high-availability cluster, including multi-replica data protection.
High availability is included and is not a separately paid feature within the 5,000-tag Free Tier.
The TDengine All-in-One Package supports Windows, Linux, and Docker. It can be deployed on local servers, virtual machines, edge infrastructure, or customer-managed cloud infrastructure.
After installing TDengine, complete the online registration process when you first access the system. TDengine will then generate and activate the one-year Free Tier license.
An internet connection is required for initial registration and license activation and for annual renewal.
Organizations that require a completely air-gapped license-management process should contact TDengine about commercial licensing options.
Yes. The All-in-One Package includes TDengine TSDB Enterprise as the dedicated data engine supporting the complete TDengine platform.
However, the bundled TSDB is not licensed as a free standalone TDengine TSDB Enterprise deployment.Organizations that require a completely air-gapped license-management process should contact TDengine about commercial licensing options.
Direct third-party queries are not included with the bundled TSDB license.
TDengine and official TDengine components can query the bundled TSDB. Direct queries from third-party database clients or tools require a separate TDengine TSDB Enterprise license.
For example, connecting Grafana directly to the bundled TSDB requires a separate TSDB Enterprise license. This does not affect the dashboards, visualization, analytics, reports, or AI capabilities included within TDengine.
Yes. The direct-query restriction does not prevent normal data ingestion. External systems can write data into TDengine through supported interfaces and Data In connectors.
Yes. If you already operate TDengine TSDB OSS or Enterprise, you can install the TDengine application layer separately and configure it to use your existing TSDB deployment.
Your existing TSDB deployment and licensing remain unchanged.
Most TDengine application capabilities can be used with TDengine TSDB OSS. However, capabilities that depend on TDengine TSDB Enterprise—such as taosX-based zero-code data ingestion and management—require the Enterprise edition.
For the complete experience, use the TDengine All-in-One Package or connect to an existing TDengine TSDB Enterprise deployment.
The Free Tier includes public documentation, tutorials, and community support. It does not include direct technical support, guaranteed response times, or SLA coverage.
Organizations that need support for production deployments can purchase Enterprise Support, including direct assistance, defined response times, troubleshooting, and SLA coverage.
Contact us for Enterprise Support or professional services.
You can upgrade to a commercial TDengine license, which removes the 5,000-tag limit and supports larger deployments and additional commercial licensing requirements.
No. Upgrading only requires replacing the software license. Your existing data, configurations, asset models, dashboards, reports, and analytics tasks remain in place.
Start building your industrial data foundation today
TDengine Free Tier is free forever up to 5,000 tags.
Full Historian experience included, future upgrades included.
