Open Source Libraries
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Libraries
Browse free open source Libraries and projects for Linux and ChromeOS below. Use the toggles on the left to filter open source Libraries by OS, license, language, programming language, and project status.
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lxml
The lxml XML toolkit for Python
A Python library for efficient XML and HTML processing, known for speed and compatibility. The lxml XML toolkit is a Pythonic binding for the C libraries libxml2 and libxslt. It is unique in that it combines the speed and XML feature completeness of these libraries with the simplicity of a native Python API, mostly compatible but superior to the well-known ElementTree API. The latest release works with all CPython versions from 3.6 to 3.12. See the introduction for more information about the background and goals of the lxml project. -
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iText®, a JAVA PDF library
PDF Library for Developers
iText is an open-source PDF library available for Java and .NET (C#). iText allows you to effortlessly generate and manipulate standards-compliant PDF documents with a powerful and feature-rich SDK. With iText, you can create archivable and accessible PDFs, split and merge documents, fill and flatten forms, digitally sign documents, and more. iText add-ons enable additional functionality, such as PDF creation from HTML templates, secure redaction, OCR, and much more. The latest versions of iText build on the success of previous versions and feature an improved document engine, high and low-level programming capabilities, and a more efficient modular structure. iText represents the next level for developers looking to leverage PDF in document workflows. The main project page for iText is now on GitHub, and all the latest releases, code samples, open source add-ons and tools, etc. can be found at https://github.com/itext/. -
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Lexbor
Lexbor is development of an open source HTML Renderer library
Lexbor is the development of a web browser engine available as a software library; it ships with a free license and has no extra dependencies. For us, speed is an absolute must-have. In our development process, we focus on fastest parsing techniques for HTML, CSS, and fonts, fastest data processing methods, and fastest ways to serve content to end users. Whether you are building a backend that handles millions of HTML documents or a UI-heavy user app, your software’s response rate always matters to users and developers alike. Lexbor’s code is optimized for ease of access in end-user applications and across programming languages. You can effortlessly wrap all the capabilities of the library in, say, Python to power your end-user or backend applications in a new environment. In other words, lexbor offers a feature-rich core that developers can build upon as they see fit. -
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CoreUI
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
CoreUI Admin Panel is not another blend of 3rd parties free components and libraries. It's the only Open Source Bootstrap Admin Dashboard Template built on the enterprise-grade hand-crafted UI Components Library created and backed by professionals. CoreUI and CoreUI PRO are delivered with fully-featured, and ready-to-use admin panel templates for your application. Save thousands of development hours by using ready-made, reusable, and commonly used widgets and UI components. Moreover, CoreUI Bootstrap Admin Template is delivered with a ready-to-use environment, so you don't have to waste time configuring the project. All build scripts and tools are ready to use out of the box. With CoreUI Template you can start a new project in a minute! -
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CSSBox
Pure Java HTML / CSS rendering engine
CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also allows displaying the rendered document. -
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XLSX I/O
C library for reading/writing values from/to Excel .xlsx files.
Cross-platform C library for reading values from and writing values to .xlsx files. XLSX I/O aims to provide a C library for reading and writing .xlsx files. The .xlsx file format is the native format used by Microsoft(R) Excel(TM) since version 2007. The library was written with the following goals in mind: - primary focus on data values organized in tables, on not layout or graphics - written in standard C, but allows being used by C++ - simple interface - small footprint - portable across different platforms (Windows, *nix) - minimal dependancies: only depends on expat (only for reading) and libzip (which in turn depends on zlib) - separate library for reading and writing .xlsx files Also includes command line tools to convert between .xslx and CSV files. -
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Rapid YAML
Library to parse and emit YAML, and do it fast
Or ryml, for short. ryml is a C++ library to parse and emit YAML, and do it fast, on everything from x64 to bare-metal chips without operating system. (If you are looking to use your programs with a YAML tree as a configuration tree with override facilities, take a look at c4conf). ryml parses both read-only and in-situ source buffers; the resulting data nodes hold only views to sub-ranges of the source buffer. No string copies or duplications are done, and no virtual functions are used. The data tree is a flat index-based structure stored in a single array. Serialization happens only at your direct request, after parsing / before emitting. Internally, the data tree representation stores only string views and has no knowledge of types, but of course, every node can have a YAML type tag. ryml makes it easy and fast to read and modify the data tree. -
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Sesame
Java RDF Framework
This project is no longer actively maintained. It is succeeded by the Eclipse RDF4J project, which can be found at GitHub and at http://www.rdf4j.org/. Sesame is a de-facto standard framework for processing RDF data. This includes parsing, scalable storage, reasoning and full SPARQL 1.1 query/update support. Sesame offers a fully modular toolkit and an easy-to-use Java API that can be connected to all leading RDF storage solutions. -
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dompdf - the PHP 5 HTML to PDF converter. dompdf is a (mostly) CSS compliant HTML rendering engine written in PHP. It supports external stylesheets, inline style tags, and the style attributes of individual HTML elements. Requires PHP 5.
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POCO C++ Libraries
Cross-platform C++ libraries with a network/internet focus.
NOTE: Current source code as well as bugs/patches are on GitHub: https://github.com/pocoproject/poco/ C++ class libraries for network-centric, portable applications, integrated perfectly with the C++ Standard Library. Includes network protocols (Sockets, HTTP, FTP, SMTP, POP3, etc.), SQL database access and XML parsing. Licensed under Boost license. -
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ThreeTen provides a modern date and time library for Java and is the reference implementation for JSR-310. It includes many of the lessons of the Joda-Time project and aims to standardise date and time concepts in computing. Code now integrated into OpenJDK, this project is archived.
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A fast JPEG2000 encoder running on CUDA-capable GPUs. Supports lossless and lossy encoding. Both commandline tool with GUI and CUDA/C++ library. Visit >> http://cuj2k.sourceforge.net << for further information.
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Game Toolbox is a C# assembly designed to facilitate the creation of games and game prototypes. It contains no graphics code, does not depend on XNA, and is Mono-compatible. It provides implementations of A*, GOAP, a genetic algorithm, and more.
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toPDF
Online service for PDF conversion (to PDF)
A simple online service for PDF conversion. This project is a simple library and also a web application. It offers a REST service and a simple upload service for synchronous conversion. This library/application doesn't contain conversion libraries because it's a wrapper for existing tools. toPDF currently supports the open source tool PDF Creator (http://www.pdfforge.org) and the commercial solution, easy PDF, from BCL (http://www.pdfonline.com/easypdf/sdk/). -
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This is a JavaScript Library that extends JavaScript's Date object to provide all the functionality that is missing from the standard implementation. Output a date in almost any textual format and calculate the exact difference between any two dates
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(py)biblib
A python library to handle BibTeX bibliographic data.
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C/CIF
Compact/ Chess Interchange Format
C/CIF is an interchange format for chess applications. This format is supporting all features of a chess application - PGN does not provide this - and can be used to transfer chess archives without any loss via an application independent format. C/CIF is supporting two formats: the binary format CCIF, and the human readable format CIF (in XML). -
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A full-featured, lean set of date/ time classes to replace java.util's Date and Calendar. All objects are immutable/threadsafe, and allow formatting and various kinds of date math and range operations. Note that only GregorianCalendar is supported.
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CocoCommons
Modern, cross platform library of functions used in CoCo software
This is a modern set of libraries intended for use in software related to the Tandy Radio Shack Color Computer (the CoCo). Some functionality may also be useful in more general Motorola 6809 centered projects. CocoCommons provides a set of libraries for common tasks such as reading DECB and RBF filesystems, interpretting common file formats, and displaying CoCo-like screens. These are used extensively in the DriveWire 4 project and the upcoming nineserver project. In time it these libraries should implement most of the functionality now found in the Toolshed project. -
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DSL-JSON library
High performance JVM JSON library
Fastest JVM (Java/Android/Scala/Kotlin) JSON library with advanced compile-time data binding support. Java JSON library designed for performance. Originally built for invasive software composition with DSL Platform compiler. v1 core library was targeting Java6, while v2 targets Java8. So there is no need anymore for dsl-json-java8 project and instead, just dsl-json project should be referenced. From v2 only a single annotation processor is supported, which was previously in the java8 project. Joda and some other specific libraries were removed. If you still need converters for those types, you need to include them in your project. -
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Dominate
Dominate is a Python library for creating and manipulating HTML docs
Dominate is a Python library for creating and manipulating HTML documents using an elegant DOM API. It allows you to write HTML pages in pure Python very concisely, which eliminates the need to learn another template language, and lets you take advantage of the more powerful features of Python. Dominate can also use keyword arguments to append attributes onto your tags. Most of the attributes are a direct copy from the HTML spec with a few variations. Through the use of the += operator and the .add() method you can easily create more advanced structures. By default, render() tries to make all output human readable, with one HTML element per line and two spaces of indentation. -
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Event Ruler
Java library that allows matching many thousands of Events per second
Event Ruler (called Ruler in the rest of the doc for brevity) is a Java library that allows matching Rules to Events. An event is a list of fields, which may be given as name/value pairs or as a JSON object. A rule associates event field names with lists of possible values. Event Ruler is a Java library that allows matching many thousands of Events per second to any number of expressive and sophisticated rules. -
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This is a C++ wrapper around the excellent Expat XML parser, designed to allow a developer to rapidly build XML parser classes for their projects.
