The 3 Best Striim Alternatives in 2026

Debezium reads a database’s transaction log and turns each row change into an event your other systems can consume. It ships stable connectors for PostgreSQL, MySQL, MariaDB, MongoDB, SQL Server, Oracle, Db2 and CockroachDB, with more (Cassandra, Spanner, Vitess, TiDB and others) incubating. You can run it on Kafka Connect, as the standalone Debezium Server with no Kafka required, or embedded as a library. It is Apache 2.0 licensed and hosted by the Commonhaus Foundation; 3.7.1.Final shipped on November 6 2026. There is no paid tier: you run and monitor it yourself.

Best for: open-source CDC, Kafka, Postgres WAL

• Free at any volume
• Log-based CDC, not polling
• Runs with or without Kafka

Estuary Flow is a real-time alternative to batch ELT: change-data-capture from Postgres, MySQL and MongoDB into warehouses and streams with millisecond latency, backfills and incremental syncs from the same pipeline. Pricing is transparent and usage-shaped, $0.50 per GB plus $100 per connector per month, which tends to beat MAR billing on high-churn tables.

Best for: managed CDC, per-GB pricing, real-time

• Real-time CDC rather than batch
• Pricing you can predict from data volume
• Backfill and streaming in one pipeline

AWS DMS migrates databases between engines (Oracle, SQL Server, PostgreSQL, MySQL, MongoDB, MariaDB and others) or between copies of the same engine, with near-zero downtime as its stated goal. You pay hourly for a replication instance, or choose DMS Serverless, which scales capacity in DCUs (one DCU is 2 GB of RAM). Schema Conversion is free apart from the S3 storage it uses. Burstable instances include 50 GB of storage and compute or memory-optimized ones 100 GB. New AWS accounts since July 15 2025 get up to $200 in Free Tier credits rather than free DMS hours.

Best for: database migration, AWS, cut-over sync

• Pay-as-you-go with no licence
• Heterogeneous migrations plus free schema conversion
• Serverless option scales itself