PDFEncrypt is a free, open-source native Windows app that encrypts PDF files using standard PDF encryption algorithms. Users specify a password required to open the document along with options and permissions for the PDF. Encryption runs locally on the Windows PC rather than uploading files to a third-party server. The app uses the iTextPDF library and is released under the AGPL license.
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.
wkhtmltopdf and wkhtmltoimage are open source command line tools that render HTML into PDF and image formats using the Qt WebKit rendering engine. They run headless without a display or display service. A C library, libwkhtmltox, offers bindings for PDF and image conversion.
PDF4QT is an open source PDF editor for Windows and Linux under the LGPLv3 license. It offers applications for viewing, editing and rendering PDF documents, plus a C++ library and command line tool for developers. Features include digital signature verification, annotation editing and page organization such as merging and splitting.
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.
TagSpaces is a free, open-source file organizer for Windows, macOS, Linux and the web. It adds color-coded tags to files and folders without a database, so tags travel with the files, and it stores notes as standard text files. Files can be previewed, web content collected via a browser extension, and syncing is left to optional tools. It works offline without login.
DocFetcher is an open-source desktop search application that searches the contents of files stored on a computer. It runs on Windows, Linux and macOS under the Eclipse Public License. Users create indexes for folders to search, and results include a text-only preview with highlighted matches and filters by filesize, file type and location.
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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.
wkhtmltopdf and wkhtmltoimage are open source command line tools that render HTML into PDF and image formats using the Qt WebKit rendering engine. They run headless without a display or display service. A C library, libwkhtmltox, offers bindings for PDF and image conversion.
PDF4QT is an open source PDF editor for Windows and Linux under the LGPLv3 license. It offers applications for viewing, editing and rendering PDF documents, plus a C++ library and command line tool for developers. Features include digital signature verification, annotation editing and page organization such as merging and splitting.
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.
TagSpaces is a free, open-source file organizer for Windows, macOS, Linux and the web. It adds color-coded tags to files and folders without a database, so tags travel with the files, and it stores notes as standard text files. Files can be previewed, web content collected via a browser extension, and syncing is left to optional tools. It works offline without login.
DocFetcher is an open-source desktop search application that searches the contents of files stored on a computer. It runs on Windows, Linux and macOS under the Eclipse Public License. Users create indexes for folders to search, and results include a text-only preview with highlighted matches and filters by filesize, file type and location.
