Side by side

Carbon Data Layer vs XTDB

Both stand on data version control tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Carbon Data Layer

Paid

Carbon Data Layer links instrument output, provenance, governance, and analysis in one platform. Prospective teams must request pricing and discuss their instruments, workflows, and deployment needs.

Visit Carbon Data Layer

XTDB focuses on keeping historical state queryable through bitemporal records and SQL. Its deployment and support options may fit a range of application setups, but check the listed support plan terms before adopting it.

Visit XTDB

The facts

	Carbon Data Layer	XTDB
Free plan	Not published	Yes
Open source	Not published	Not published
Runs on	Not published	API, Self-hosted, Web
Lowest paid plan	Free or on request	Developer Edition: $2,000 a year
Plans published	2	3
Maker	Not published	Not published
Website	carbonplatform.ai	xtdb.com
On data version control tools	#33 of 36	#29 of 36

Carbon Data Layer: what it does well

Versioned datasets preserve instrument lineage
Managed Postgres with rich data types
Role and resource permissions
On-premise deployment option
Python analysis workspace

What to know first

Pricing requires contacting sales
Implementation starts with forward-deployed engineers
No stated security certification
Designed for research and engineering workflows

XTDB: what it does well

Free and open source under the MPL license.
Queries across valid time and system time.
Supports SQL:2011 temporal queries.
Docker, on-premises and cloud marketplace deployment options.
Kafka and Kafka Connect support.

What to know first

Developer Edition is listed at $2,000 a year.
Authentication options are limited to listed user methods and OpenID Connect.

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