No. 1 of 19 ·Database Schema Comparison Tools

apgdiff

Windows · Mac · Linux

Freedom report

Three barsScore 6.5

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

apgdiff is ranked #1 of 19 in database schema comparison tools on Freedom251. It runs on Linux, macOS, Windows. There is a free plan.

apgdiff plans and pricing

All plans

Free Free Free PostgreSQL schema diff tool · MIT licensed apgdiff.com · 4 Oct 2026

Compared on database schema comparison tools

Free plan: Yes
Migration scripts: Yes
Database scope: single-engine

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The record

Purpose: apgdiff compares two PostgreSQL database schema dump files and outputs DDL statements to update the old schema or show the differences.
Workflow: It takes an original schema dump and a new schema dump as input, and can print the generated SQL or redirect it to a file.
Command line: apgdiff is a command-line tool run from a terminal and the homepage says it is useful to call from batches or web applications.
Supported systems: The homepage lists Windows, Linux, Mac OS X, Solaris, and BSD, and says it can run on other systems where Java is available.
Runtime: apgdiff is a Java program and its installation page requires Java 1.6 or newer.
Download: The download page identifies version 2.4 as the latest stable release and offers binary and source ZIP downloads.
Unsupported statements: Other SQL statements are ignored, and the --output-ignored-statements option reports DDL statements the tool currently ignores.
Feature constraint: For CREATE TABLE column constraints, the supported features page says only NULL and NOT NULL are supported.
Review generated SQL: The usage guide recommends reviewing generated upgrade statements and possibly testing them on another database before applying them to production.
License: The project is licensed under the MIT License.
Support: The site directs users to GitHub Issues to report bugs or request features and lists the author’s email for comments and suggestions.
Project activity: The project news page lists version 2.4 as released on 2012-09-21 and says the project moved to GitHub on 2012-08-03.
Who it serves: The homepage says the command-line format suits users accustomed to command-line applications and may be inconvenient for users who are not.
Founded: 2006
Price from: Free

Where it ranks on Freedom251

Best Database Schema Comparison Tools in 2026#1 of 19

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Sources

apgdiff.com· checked 4 Oct 2026
apgdiff.com/how_it_works.php· checked 4 Oct 2026
apgdiff.com/installation.php· checked 4 Oct 2026
apgdiff.com/download.php· checked 4 Oct 2026
apgdiff.com/supported_features.php· checked 4 Oct 2026
apgdiff.com/how_to_use_it.php· checked 4 Oct 2026
apgdiff.com/license.php· checked 4 Oct 2026
apgdiff.com/bugs.php· checked 4 Oct 2026
apgdiff.com/news.php· checked 4 Oct 2026
github.com/fordfrog/apgdiff· checked 28 Sept 2026