UrBackup is an open source client/server backup system that combines image and file backups. File and image backups are made while the system is running, and the server has a web interface for status and configuration. Image backups only work with NTFS volumes and the Windows client or extX and XFS volumes with the Linux client.
VERNAM is a free, open-source file encryption tool that runs entirely in the browser. It encrypts any file with a passphrase using XChaCha20-Poly1305 and Argon2id, and no files or passwords are uploaded. It is published by PrivacyTools.io and offers an optional high security mode with heavier key derivation.
Dangerzone is a free and open source project maintained by Freedom of the Press Foundation. It converts potentially dangerous PDFs, office documents, or images to a safe PDF. Documents are sanitized in a sandbox with no network access, and the document is converted into pixels and rebuilt as a PDF.
FreeFileSync is a free open source data backup application for comparing and synchronizing files and folders on Windows, macOS and Linux. It determines differences between a source and target folder and transfers only the minimum data needed rather than copying every file. The website also references a separate Business Edition available for license extension.
Gnumeric is an open-source spreadsheet program. The project states that it starts up quickly and handles large spreadsheets while remaining responsive. Its source code is available under the GNU General Public License version 2 or version 3. The site also lists release notes and resources such as a user's manual and mailing list.
Navidrome is open source software distributed free of charge under the GNU GPL v3 license. It serves a personal music collection through a modern web UI and third-party compatible mobile apps for iOS and Android, allowing access from anywhere. It supports multiple libraries with user-specific access controls and the OpenSubsonic API.
Kopia is an open-source backup and restore tool. It creates encrypted snapshots of designated files and directories and saves them to cloud, network, or local storage. It offers command-line and graphical interfaces and supports compression, deduplication, and error correction.
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VERNAM is a free, open-source file encryption tool that runs entirely in the browser. It encrypts any file with a passphrase using XChaCha20-Poly1305 and Argon2id, and no files or passwords are uploaded. It is published by PrivacyTools.io and offers an optional high security mode with heavier key derivation.
Dangerzone is a free and open source project maintained by Freedom of the Press Foundation. It converts potentially dangerous PDFs, office documents, or images to a safe PDF. Documents are sanitized in a sandbox with no network access, and the document is converted into pixels and rebuilt as a PDF.
FreeFileSync is a free open source data backup application for comparing and synchronizing files and folders on Windows, macOS and Linux. It determines differences between a source and target folder and transfers only the minimum data needed rather than copying every file. The website also references a separate Business Edition available for license extension.
Gnumeric is an open-source spreadsheet program. The project states that it starts up quickly and handles large spreadsheets while remaining responsive. Its source code is available under the GNU General Public License version 2 or version 3. The site also lists release notes and resources such as a user's manual and mailing list.
Navidrome is open source software distributed free of charge under the GNU GPL v3 license. It serves a personal music collection through a modern web UI and third-party compatible mobile apps for iOS and Android, allowing access from anywhere. It supports multiple libraries with user-specific access controls and the OpenSubsonic API.
Kopia is an open-source backup and restore tool. It creates encrypted snapshots of designated files and directories and saves them to cloud, network, or local storage. It offers command-line and graphical interfaces and supports compression, deduplication, and error correction.
