Estuary vs Maxwell's Daemon
Estuary
estuary.devMaxwell's Daemon
maxwells-daemon.ioSide by side
| Figure | Estuary | Maxwell's Daemon |
|---|---|---|
| Price from | $0.50/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 9 | 1 |
| Spec score · Change Data Capture Software | 9.3 (#1) | 7.4 (#14) |
| Deployment | Deployment choices include shared public infrastructure, dedicated private data planes and bring-your-own-cloud environments. | The quick start documents running Maxwell from the command line or Docker and provides a binary distribution and Homebrew installation command. |
| Encryption | Estuary states that data is encrypted in transit and at rest, with mutual TLS between internal services and encrypted connector credentials. | When enabled, Maxwell encrypts messages with AES/CBC/PKCS5PADDING using a user-provided key, then base64-encodes values. |
| What it does | Estuary is a right-time data platform that captures data once and delivers it to warehouses, operational systems, applications and AI workflows using CDC, streaming, ETL/ELT and scheduled movement. | Maxwell reads MySQL binlogs and writes database changes as JSON to Kafka, Kinesis, and other streaming platforms. |
Plans
Estuary
- FreeFree
- Pay-as-you-go$100 a month
- AnnualPriced on request
- DeveloperFree
- FreeFree
- Cloud$0.50 a month
- Cloud PAYG$0.50 a month
- EnterprisePriced on request
- Private/BYOCPriced on request
In their own words
Estuary
Estuary is a managed data integration platform for combining change data capture, batch, streaming, and app synchronization for analytics, operations, and AI. It supports transformations while data is moving, using SQL, Python, or TypeScript, and describes delivery as exactly once with end-to-end latency under 100 milliseconds. More than 200 prebuilt connectors cover databases, warehouses, SaaS apps, and cloud platforms, including Snowflake, BigQuery, Kafka, MySQL, and PostgreSQL. Customers can store data in their own cloud bucket for a duration they choose, and select public, private, or Bring Your Own Cloud deployment. Estuary lists SOC 2 Type II, HIPAA, HITECH, CCPA, and GDPR among its compliance standards, and says data is encrypted in transit and at rest. It is available through API, self-hosted, and web options. The indefinite free tier is limited to 10 GB per month and two concurrent connector instances; paid plans start at $100 a month.
Maxwell's Daemon
Maxwell's Daemon is a free, open-source, self-hosted Linux tool for moving MySQL changes into streaming systems. It reads MySQL binary logs and emits database changes as JSON for Kafka, Kinesis, SQS, SNS, NATS, Google Cloud Pub/Sub, BigQuery, RabbitMQ, Redis, and other destinations. Listed uses include ETL, database change auditing, cache building or expiration, search indexing, and communication between services. Filtering can select databases, tables, and column values, while JavaScript filters handle custom row filtering and data changes. When encryption is enabled, messages use AES/CBC/PKCS5PADDING with a user-provided key and base64-encoded values. Metrics can be exposed through logging, JMX, HTTP, or Datadog; HTTP endpoints cover metrics, Prometheus, health checks, ping, and diagnostics. Maxwell supports schema evolution and an initial snapshot. Deployment options include command line, Docker, binary distribution, and Homebrew. Requirements include JRE 11 or later, supported MySQL versions from 5.1 through 8, and Kafka 0.8.2 or later when Kafka is used.