Tonic.ai vs Neosync

Quote on request

Free and open source

Enterprise quote-based pricing by data volume and connected databases.

The MIT-licensed code remains free to self-host. The paid cloud service no longer exists — neosync.dev is offline.

Free trial.

Everything, self-hosted

Established

Tonic.ai · since 2018

Emerging

Nucleus Cloud (acquired by Grow Therapy) · since 2023

• Preserves referential integrity and statistical distribution, so applications behave as they do in production.
• Directly addresses the GDPR and HIPAA exposure created by production data in lower environments.
• Subsetting produces a small but coherent slice rather than a full copy.

• Open source and self-hostable, so sensitive data never leaves your infrastructure.
• Preserves referential integrity across tables.
• The last release is feature-complete for common Postgres and MySQL anonymisation work.

• Expensive, with enterprise-only pricing.
• Initial configuration of sensitive-field classification takes real effort.
• Adds a pipeline stage that must be maintained as the schema evolves.

• Archived and unmaintained since August 2025 — no security patches, no new connectors, no support.
• The hosted cloud has been shut down, so self-hosting is the only option.
• Fewer database connectors than the incumbents.

Organisations that currently copy production data into staging and know they should stop.

Realistically, nobody starting fresh. Existing self-hosted users can keep running it, but plan a migration to Tonic or a maintained alternative.