Compare and synchronize MS Access projects and data

AccdbMerge is an easy to use diff & merge tool for Microsoft Access database files:

Compare schema, programming objects and data
Quick filters to show all/new/changed
Merge changes in both directions
Lightweight, < 10 MB
Free version with basic features, available for commercial use. No credit card, no signup, no ads, no hidden telemetry.
Pro version with whole set of features at a reasonable price. Free 14 days trial available.
Supported MS Access versions: from 2007 to 2024 and Microsoft 365
Supported file formats: *.accdb, *.mdb, *.mde, *.accde which can be opened in Access on the same computer

Screenshots and use cases

Scroll the gallery and click on the image title to open the use case with detailed steps. Use the toggle to switch application modes, if applicable.

Database changes summary

Data changes summary

Compare table data

Compare ad hoc query result

Compare table schema

Compare list of objects

Compare object definition

Please open this page on the wide screen to get the Free vs Pro features and pricing overview, or use the ≡ menu to download and/or get more details.

	Free	Pro
Price (USD, excluding VAT):	$0	Single-user personal license:	$80 BUY NOW
		Multi-user license for companies and organizations:	$105 ~ $60 per user, volume discounts: 5 users: $375 ($75 per user) 10 users: $700 ($70 per user) 20 users: $1200 ($60 per user) BUY NOW
		Payments are handled externally by PayPro Global (Toronto, Canada), transactions are encrypted and secure This is a perpetual license including a one-year of free upgrades More about purchasing, license types and discounts
Compare schema and programming objects:	Table definitions (field name and type) ^{merge new only} Queries Forms Reports Macros Modules	Table definitions (field name, type and properties; indexes; data macros; linked table definitions) Relations Queries Forms Reports Macros Modules Import/export specifications Ribbons References ^{diff only} Database properties ^{diff only}
Compare data:	Per table ^{with limitations}	Per table Per query Any table/query vs any other table/query ^{merge only if target updateable} Any custom query result ^{diff only} Batch data diff across multiple tables, queries, custom mappings and custom queries Data slices (customized subset of Batch data diff)
Other Pro features:	N/A	Diff profiles Export to Xlsx and Json Application customization Protected files support Misc. other enhancements: scrollbars colored with changes summary, navigation thru changes, advanced search, etc. More about Pro features

If you have any questions, please contact us.