Click the "Select File" button above, and choose your NAB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NAB to another file type
To convert NAB address books to another format, you need Novell GroupWise or other Data software.
Convert a file to NAB
To convert other file formats to the "Address Book & Asset Archive" file type, you need software like Novell GroupWise or a similar tool.
About NAB files
The .NAB file format most commonly stores local address books for Novell GroupWise clients, saving user contacts, email addresses, and group lists in a UTF-8 encoded database. Alternatively, it functions as a Unity game asset bundle using the UnityFS format by Unity Technologies, or as a Java serialized license file for NetApp OnCommand Balance. Traditionally, these files are opened with Novell GroupWise for email management, or Unity Studio/AssetStudio for exploring compiled game assets. Users frequently need to convert .NAB files because the GroupWise format is highly proprietary and largely isolated from modern CRM systems. Migrating from legacy Novell networks to standard platforms like Microsoft Exchange or Google Workspace is notoriously frustrating, as standard vCard converters cannot parse the raw .NAB database natively. Similarly, Unity asset bundles are compiled archives designed exclusively for runtime execution, making it difficult to extract individual 3D models or textures without specialized third-party unpacking tools. For legacy email data, GroupWise users must convert .NAB to CSV (Comma Separated Values) or VCF (vCard) to successfully import contacts into modern clients. Unity developers generally aim to extract internal assets to OBJ, PNG, or FBX. This file format is exceptionally difficult to open or convert directly from the raw file. Often, only the original software can properly read or export the data natively. However, convert.guru can still identify the file format, inspect the file, and show text or internal content. Just drag and drop your file to see what it is and convert it if a supported underlying data structure is detected.
Convert.Guru analyzes your NAB file, detects the exact format, and lets you read the text inside.
If you want to convert NAB file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Novell GroupWise or similar software from the "Contact Database & Game Assets" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to NAB, try Novell GroupWise or another comparable tool in the "Contact Database & Game Assets" category.
The NAB Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our NAB converter.