Open Source Command Line Tools

PDF4QT is open source PDF editor based on Qt framework. It contains a C++ library, applications for viewing/editing PDF documents, and a command line tool. PDF4QT is an open-source PDF editor for Windows/Linux. It is a modern solution for viewing/editing/rendering PDF documents, for users and developers alike. For developers, there is a C++ library and a command line tool for use in scripts. For users, there are four applications offering many features. The project is hosted on Github and uses the license LGPLv3. The applications are primarily used by target users to view, edit, manipulate or compare PDF documents. Users can preview these applications in the screenshots section of this webpage. Basic browsing and lots of other functionalities, such as encryption, reading a document, verification of digital signatures, editing of annotations, searching for text using regular expressions, drawing pages into an image, and much more. Several plug-ins are available.

Gerber2PDF is a command-line tool to convert Gerber files to PDF for proofing and hobbyist printing purposes. It converts multiple Gerber files at once, placing the resulting layers each on it's own page within the PDF. Each layer has a PDF bookmark for easy reference. Layers can optionally be combined onto a single page and rendered with custom colours and transparency. There is a Drill to Gerber converter available from the downloads page.

Free and open source GUI application for updating bookmarks in a PDF document using the PDF Toolkit command line tool, PDFtk Server. User selects the PDF via drag and drop and then edits the bookmark entries in a text file using a simple, 1-line data format. Program handles everything else in response to a few user button clicks. OS: Windows. Author: David King. License: GPLv3.

Chordeus is yet another Chord Pro to PDF converter that creates nice looking guitar chord sheets. You can create single sheets or a whole songbook using the command line tool or a simple wizard-like GUI.