R:Base data
File type: Various data file
An rb1 file extension identifies data used by the R:BASE relational database management system. An rb1 file contains data for R:BASE.
Found 3 different file type records with the same rb1 filename suffix.
File type category:
Various data file
Date updated: October 11, 2026
R:BASE is a multi-user, multi-platform, true relational database management system from R:BASE Technologies, Inc. The rb1 file extension is associated with data created or used by this software.
An rb1 file stores data used by R:BASE as part of its database environment. It is an R:BASE-specific data file rather than a general-purpose data-exchange format.
This record is associated with R:BASE for Microsoft Windows.
On Microsoft Windows, open the database that uses the rb1 file with R:BASE. R:BASE may manage the file as part of its database environment rather than opening it as a standalone document.
The rb1 format is specific to R:BASE, so there is no general-purpose conversion method based only on the file extension.
To move the data to another system, open the database in R:BASE and use its available data export functions to create a format supported by the target software.
File type category:
Backup file
Date updated: October 11, 2026
Reunion is genealogy software developed by Leister Productions and available for Apple macOS, formerly called Mac OS X, and iOS. An rb1 file stores a backup copy of a Reunion project.
The backup belongs to Reunion rather than serving as a general-purpose genealogy exchange format. It is used to restore or recover project data in the Reunion application.
The format is proprietary to Reunion and the rb1 backup is associated with the macOS version of the software. The exact data that can be restored depends on the Reunion version that created the backup.
Open or restore the rb1 file with Reunion on macOS. Launch Reunion and use its backup or restore command to select the file; an rb1 file may not open correctly as a normal document through the Finder.
If the file was created by an older version of Reunion, use a compatible version of the application or follow Reunion's procedure for updating an older project.
An rb1 file is a backup, not a format normally converted directly by a separate utility. Restore it in Reunion first.
After restoring the project, use Reunion's export features to create another format if the required export option is available. Do not rename the extension as a way of converting the data.
File type category:
Backup file
Date updated: October 11, 2026
Trend AntiVirus is antivirus and computer protection software for Microsoft Windows. Its rb1 file is a backup created by the program.
The file stores backup data for use by Trend AntiVirus.
Use Trend AntiVirus on Microsoft Windows to work with an rb1 file. The file is normally restored or managed from within the program rather than opened as a standalone document.
Use Trend AntiVirus to restore the backup. Recovered data can then be saved in formats supported by the relevant applications.
Software apps that create rb1 files:
Microsoft Windows
Software apps that recover rb1 files:
Microsoft Windows
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