3963 FieldWorks Language Explorer FWBackup Aggregate FWBackup is a backup file native to FieldWorks Language Explorer (FLEx), an application for recording and analysing information relating to languages and cultures. The FWBackup file is a zip which stores the complete project including configuration, FWData XML, and any multimedia assets associated with the project. 244 Preservica / Preservica 02 Dec 2025 02 Dec 2025 fmt/2086 PUID fwbackup File extension