Side by side
| dbSlice | pgloader (as of 30/10/2026) | |
|---|---|---|
| Interface | Windows app + CLI | Command line and command files |
| Targets | SQL Server, PostgreSQL, Oracle, MySQL, MariaDB, Firebird, SQLite, InterSystems IRIS | PostgreSQL, Citus, Redshift |
| Sources | Same list as targets | SQLite, MySQL, MS SQL, PostgreSQL, Redshift, files |
| Oracle, Firebird, InterSystems as source | Yes | Not in its published list |
| Key-by-key diff before writing | Yes | No |
| Mask data while copying | Yes | No |
| Runs on | Windows | Java JAR, Docker image and Linux packages |
| Price | From US$ 89.99 (launch price); free Store version | Free, open source |
When pgloader is the better choice
- A one-time load into PostgreSQL, run by someone comfortable with its command language.
- You want a free, open source tool, or you work on Linux or macOS.
When dbSlice fits better
- The team wants a GUI with a preview of the data and a check before writing.
- The source is Oracle, Firebird or InterSystems, or the target is not PostgreSQL.
- PostgreSQL has to stay in sync with the old database every night until cutover.
- You need masked copies for development and test.
- Running in production for more than six years in mission-critical environments, across multiple data centers and on-premises, with SQL Server, PostgreSQL, Aurora and InterSystems Caché/IRIS.
FAQ
Does dbSlice convert schemas like pgloader does?
It suggests a CREATE TABLE for your DBA to review; it does not create objects by itself.
Can I use both?
Yes: load once with pgloader and keep the tables in sync with dbSlice jobs.
Is there a free version?
Yes, on the Microsoft Store; writing to a target needs a Desktop or Server license.
MySQL to PostgreSQL migration →
How to read sync speed numbers →
pgloader is an open source project. dbSlice is not affiliated with its authors. Competitor information comes from its public website on the date shown and may have changed.