Open Source Linux Formats and Protocols
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Formats and Protocols for Linux
View 9246 business solutionsBrowse free open source Formats and Protocols and projects for Linux below. Use the toggles on the left to filter open source Formats and Protocols by OS, license, language, programming language, and project status.
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Filee
Free, open-source file converter. Convert 244+ formats offline
Filee is a free, open-source file conversion application that processes hundreds of document, image, media, and specialized file formats entirely offline. It provides a drag-and-drop interface that displays compatible output formats around the cursor, eliminating the need to navigate traditional conversion dialogs. The software supports PDFs, Microsoft Office documents, Korean HWP files, images, videos, audio, e-books, archives, fonts, and 3D models. It uses integrated conversion engines without requiring Microsoft Office or LibreOffice. Converted files are saved locally, protecting sensitive content from external uploads. Users can automate conversions through command-line commands, presets, and watched folders. Filee offers Windows releases alongside preview builds for macOS and Linux. Its modular architecture allows developers to expand format compatibility and conversion capabilities. -
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PDFCraft
PDFCraft is a free, privacy-focused PDF toolkit
PDFCraft is an extensible toolkit for creating, editing, and transforming PDF documents with both a graphical interface and a scripting API, making it useful for users ranging from casual editors to automated document processors. At its core, the project provides a clean, modern UI where you can rearrange pages, annotate text, insert images, fill forms, and export to multiple formats, all without needing a heavyweight commercial PDF suite. But beyond manual editing, it also offers a programmable layer so developers can write scripts to batch process documents, generate templated reports, or extract structured data from PDFs for integration in workflows. The design emphasizes quality and compatibility: output PDFs render accurately across readers, preserve metadata, and support interactive elements like hyperlinks and form fields. -
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The portable Universal Plug and Play (UPnP) SDK provides support for building UPnP-compliant control points, devices, and bridges on several operating systems. The main repository is at GitHub in https://github.com/pupnp/pupnp. This is just a clone repository for legacy reasons. Old SourceForge repo: git://pupnp.git.sourceforge.net/gitroot/pupnp/pupnp
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Biber is a sophisticated bibliography processing backend for the LaTeX biblatex package. It supports a unsurpassed feature set for automated conformance to complex bibliography style requirements such as labelling, sorting and name handling. It has comprehensive Unicode support.
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GenOffice
An AI-native office suite for macOS and Windows
GenOffice is an AI-native desktop office suite for macOS and Windows built as five Electron applications sharing a common engine layer. It provides dedicated editors for Word documents, Excel spreadsheets, PowerPoint presentations, and PDFs, plus a shell that hosts the suite. AI editing is integrated directly into document state instead of being limited to a separate chatbot. Documents support block-level edits and diffs, while sheets, slides, and PDFs expose their state to a tool-calling agent. The suite uses specialized engines for DOCX, XLSX, PPTX, and PDF parsing, rendering, editing, and export. Its round-trip design applies narrow patches so untouched portions of original files remain intact. Shared packages provide agent logic, model streaming, search, internationalization, project storage, and interface components. -
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gSOAP Toolkit
Development toolkit for Web Services and XML data bindings for C & C++
The gSOAP toolkit is an extensive suite of portable C and C++ software to develop XML Web services with powerful type-safe XML data bindings. Easy-to-use code-generator tools allow you to directly integrate XML data in C and C++. Serializes native application data in XML. Includes WSDL/XSD schema binding and auto-coding tools, stub/skeleton compiler, Web server integration with Apache module and IIS extension, high-performance XML processing with schema validation, fast MIME/MTOM streaming, SOAP and REST Web API development, WS-* protocols (WS-Security, WS-Policy, WS-ReliableMessaging, etc), XML-RPC and JSON. Licensed under GPLv2. Visit the developer center with guides, tutorials, and examples at www.genivia.com/dev.html The documentation of the toolkit, libraries, plugins and more is available at www.genivia.com/docs.html Commercial-use licenses and expert technical support services are available at competitive pricing levels, please visit www.genivia.com/products.html -
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Gwyddion
Scanning probe microscopy data visualisation and analysis
A data visualization and processing tool for scanning probe microscopy (SPM, i.e. AFM, STM, MFM, SNOM/NSOM, ...) and profilometry data, useful also for general image and 2D data analysis. -
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Docker Compose
Define and run multi-container applications with Docker
Docker Compose is an open source tool for defining and running multi-container applications with Docker. Compose lets you use a YAML file to configure your application’s services, and then create and start all the services from your configuration with just a single command. Compose works great in all environments: production, staging, testing, development, and on CI workflows. Compose has commands for every stage of your application lifecycle, from starting, stopping and rebuilding services, through to status viewing, streaming of log output and running a one-off command on a service. -
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NAPS2 - Not Another PDF Scanner
Scan documents to PDF and other file types, as simply as possible.
Visit NAPS2's home page at www.naps2.com. NAPS2 is a document scanning application with a focus on simplicity and ease of use. Scan your documents from WIA- and TWAIN-compatible scanners, organize the pages as you like, and save them as PDF, TIFF, JPEG, PNG, and other file formats. Available on Windows, Mac, and Linux. NAPS2 is currently available in over 40 different languages. Want to see NAPS2 in your preferred language? Help translate! See the wiki for more details. -
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KOReader
An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.
KOReader is a document viewer for E Ink devices. Supported fileformats include EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP files. It’s available for Kindle, Kobo, PocketBook, Android and desktop Linux. Runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS. Multi-lingual user interface with a highly customizable reader view and many typesetting options. You can set arbitrary page margins, override line spacing and choose external fonts and styles. It has multi-lingual hyphenation dictionaries bundled into the application. Custom UI without animation, with paginated menus, adjustable text contrast, and easy zoom to fit content or page in paged media. Look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, share ebooks with other KOReader devices wirelessly. -
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Zefania XML Bible Markup Language
Zefania XML bible modules
Zefania XML bible modules can be viewed with: Simple Bible Reader (see files) Zefania XML Language Documentation can be found here: https://bgfdb.de/zefaniaxml/bml/ -
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QPDF
PDF transformation/manipulation program + library
QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers. -
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Pandoc
The universal markup converter
Pandoc is a universal document converter able to convert files from a multitude of markup formats into another. With Pandoc, you have a swiss-army knife of a converter, able to convert practically any markup format into any other. Pandoc contains a Haskell library for conversions as well as a command-line tool that uses this library. It can convert to and from just about anything-- lightweight markup formats, HTML formats, documentation formats, ebooks, TeX formats, word processor formats and so much more. It understands several useful markdown syntax extensions, such as document metadata, footnotes, tables, and more. If you want strict markdown compatibility however, these extensions can be turned off. Pandoc is no doubt powerful and customizable, but it is important to note that its intermediate representation of a document is less expressive than many of the formats, so it may not produce perfect conversions every time. -
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Google Photos Takeout Helper
Script that organizes the Google Takeout archive
If you ever want to move from Google Photos to another platform/solution, your fastest choice to export all photos is Google Takeout. But when you download it, you will find yourself with zips with hundreds of little folders with weird .json files inside. What if you want to just have one folder with all photos, in chronological order? Good luck copying all of that. -
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TinyTeX releases
Windows/macOS/Linux binaries and installation methods of TinyTeX
A lightweight, cross-platform, portable, and easy-to-maintain LaTeX distribution based on TeX Live. TinyTeX is a custom LaTeX distribution based on TeX Live that is small in size but functions well in most cases, especially for R users. If you run into the problem of missing LaTeX packages, it should be super clear to you what you need to do (in fact, R users won’t need to do anything). You only install LaTeX packages you actually need. Currently, TinyTeX works best for R users. Other users can use it, too, it is just that missing LaTeX packages won’t be automatically installed, and you need to install them manually. Or you can go to the extreme to install all packages (see FAQ 3 for how), but remember there are thousands of them. Installing or running TinyTeX does not require admin privileges, which means you no longer need sudo or your IT. You can even run TinyTeX from a Flash drive. -
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a POSIX-C implementation of the http://oauth.net/ protocol. libOauth provides functionality to encode URLs and sign HTTP request data according to the oAuth standard.
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Expat XML Parser
Fast XML parser library in C
PLEASE NOTE that we are in the process of moving to GitHub: https://github.com/libexpat/libexpat This is James Clark's Expat XML parser library in C. It is a stream oriented parser that requires setting handlers to deal with the structure that the parser discovers in the document. PLEASE NOTE that we are in the process of moving to GitHub: https://github.com/libexpat/libexpat -
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libcsv is a small, simple and fast CSV library written in pure ANSI C89 that can read and write CSV data. It provides a straight-forward interface using callback functions to handle parsed fields and rows and can parse improperly formatted CSV files.
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Protocol Buffers
Google's data interchange format
Protocol Buffers are Google’s fast and simple, language- and platform-neutral, extensible mechanism for serializing structured data. It allows you to define how your data should be structured once, and then using a special generated source code, you can then easily write and read your structured data to and from a variety of data streams and using a variety of languages. Protocol Buffers currently supports a wide array of languages, including C++, Java, Python, Ruby, and many others with more to come. -
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geckodriver
WebDriver for Firefox
geckodriver is an implementation of WebDriver, and WebDriver can be used for widely different purposes. How you invoke geckodriver largely depends on your use case. If you are using geckodriver through Selenium, you must ensure that you have version 3.11 or greater. Because geckodriver implements the W3C WebDriver standard and not the same Selenium wire protocol older drivers are using, you may experience incompatibilities and migration problems when making the switch from FirefoxDriver to geckodriver. Generally speaking, Selenium 3 enabled geckodriver as the default WebDriver implementation for Firefox. With the release of Firefox 47, FirefoxDriver had to be discontinued for its lack of support for the new multi-processing architecture in Gecko. Since geckodriver is a separate HTTP server that is a complete remote end implementation of WebDriver, it is possible to avoid using the Selenium remote server if you have no requirements to distribute processes across a matrix of systems. -
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An implementation of DSSSL, a style language to format SGML or XML documents. OpenJade contains backends for various formats (RTF, HTML, TeX, MIF, SGML2SGML, and FOT). This project also maintains OpenSP.
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XML Copy Editor
XML editor
XML Copy Editor is a fast, free, validating XML editor. -
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OCRmyPDF
OCRmyPDF adds an OCR text layer to scanned PDF files
OCRmyPDF adds an optical character recognition (OCR) text layer to scanned PDF files, allowing them to be searched. PDF is the best format for storing and exchanging scanned documents. Unfortunately, PDFs can be difficult to modify. OCRmyPDF makes it easy to apply image processing and OCR (recognized, searchable text) to existing PDFs. -
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Cool Reader
A cross-platform XML/CSS based eBook reader
CoolReader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Supported formats: FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, MOBI. Platforms: Win32, Linux, Android. Ported on some eInk based devices.
