Browse free open source Data Formats software and projects for Windows and Mac below. Use the toggles on the left to filter open source Data Formats software by OS, license, language, programming language, and project status.

  • Try Google Cloud Risk-Free With $300 in Credit Icon
    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
    Start Free
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 1
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
    Leader badge
    Downloads: 208 This Week
    Last Update:
    See Project
  • 2
    matio is an C library for reading and writing MATLAB MAT files.
    Leader badge
    Downloads: 197 This Week
    Last Update:
    See Project
  • 3
    Grassroots DICOM

    Grassroots DICOM

    Cross-platform DICOM implementation

    Grassroots DiCoM is a C++ library for DICOM medical files. It is accessible from Python, C#, Java and PHP. It supports RAW, JPEG, JPEG 2000, JPEG-LS, RLE and deflated transfer syntax. It comes with a super fast scanner implementation to quickly scan hundreds of DICOM files. It supports SCU network operations (C-ECHO, C-FIND, C-STORE, C-MOVE). PS 3.3 & 3.6 are distributed as XML files. It also provides PS 3.15 certificates and password based mecanism to anonymize and de-identify DICOM datasets.
    Leader badge
    Downloads: 102 This Week
    Last Update:
    See Project
  • 4

    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.
    Downloads: 8 This Week
    Last Update:
    See Project
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 5
    JWT

    JWT

    A simple library to work with JSON Web Token and JSON Web Signature

    lcobucci/jwt is a framework-agnostic PHP library that allows you to issue, parse, and validate JSON Web Tokens based on the RFC 7519. The package is available on Packagist, you can install it using Composer. A simple library to work with JSON Web Token and JSON Web Signature based on RFC 7519. Once the library has been installed, you are able to issue and parse JWTs. To reduce the chance of having flaky tests on your test suite, the facade supports the usage of a clock object. That allows passing an implementation that always returns the same point in time.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 6
    pywebview

    pywebview

    Build GUI for your Python program with JavaScript, HTML, and CSS

    pywebview is a lightweight cross-platform wrapper around a webview component that allows to display HTML content in its own native GUI window. It gives you power of web technologies in your desktop application, hiding the fact that GUI is browser based. You can use pywebview either with a lightweight web framework like Flask or Bottle or on its own with a two way bridge between Python and DOM. pywebview uses native GUI for creating a web component window: WinForms on Windows, Cocoa on macOS and QT or GTK on Linux. If you choose to freeze your application, pywebview does not bundle a heavy GUI toolkit or web renderer with it keeping the executable size small. pywebview is compatible with Python 3.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 7
    TexText

    TexText

    Re-editable LaTeX/ typst graphics for Inkscape

    Re-editable LaTeX and typst graphics for Inkscape. TexText is a Python extension for the vector graphics editor Inkscape providing the possibility to add and re-edit LaTeX and typst generated SVG elements to your drawing.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 8
    librdkafka

    librdkafka

    The Apache Kafka C/C++ library

    librdkafka is a C library implementation of the Apache Kafka protocol, providing Producer, Consumer and Admin clients. It was designed with message delivery reliability and high performance in mind, current figures exceed 1 million msgs/second for the producer and 3 million msgs/second for the consumer. librdkafka is licensed under the 2-clause BSD license. KAFKA is a registered trademark of The Apache Software Foundation and has been licensed for use by librdkafka. librdkafka has no affiliation with and is not endorsed by The Apache Software Foundation. SASL (GSSAPI/Kerberos/SSPI, PLAIN, SCRAM, OAUTHBEARER) support. Guaranteed API stability for C & C++ APIs (ABI safety guaranteed for C). Runs on Linux, MacOS X, Windows, Solaris, FreeBSD, AIX, and more. Commercial support is available from Confluent Inc.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9
    Canmatrix

    Canmatrix

    Converting Can (Controller Area Network) Database Formats

    Canmatrix is a Python package to read and write several CAN (Controller Area Network) database formats. Canmatrix implements a "Python Can Matrix Object" which describes the can-communication and the needed objects (Board units, Frames, Signals, Values, ...) Canmatrix also includes two Tools (can convert and can compare) for converting and comparing CAN databases.
    Downloads: 5 This Week
    Last Update:
    See Project
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 10
    docx2tex

    docx2tex

    Converts Microsoft Word docx to LaTeX

    Converts Microsoft Word's DOCX to LaTeX.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 11
    Ponzu

    Ponzu

    Headless CMS with automatic JSON API

    Ponzu is a powerful and efficient open-source HTTP server framework and CMS. It provides automatic, free, and secure HTTP/2 over TLS (certificates obtained via Let's Encrypt), a useful CMS and scaffolding to generate content editors, and a fast HTTP API on which to build modern applications. Ponzu is released under the BSD-3-Clause license. With the rise in popularity of web/mobile apps connected to JSON HTTP APIs, better tools to support the development of content servers and management systems are necessary. Ponzu fills the void where you want to reach for WordPress to get a great CMS, or Rails for rapid development, but need a fast JSON response in a high-concurrency environment. Since HTTP/2 Server Push is used, Go 1.8+ is required. However, it is not required of clients connecting to a Ponzu server to make HTTP/2 requests.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 12
    HtmlCleaner is HTML parser written in Java. It transforms dirty HTML to well-formed XML following the same rules that the most web-browsers use.
    Downloads: 22 This Week
    Last Update:
    See Project
  • 13
    XLSX

    XLSX

    Go (golang) library for reading and writing XLSX files

    xlsx is a library to simplify reading and writing the XML format used by recent version of Microsoft Excel in Go programs. Version 3.0.0 introduces some more breaking changes in the API. All methods that can return an `xlsx.File` struct now accept zero, one or many `xlsx.FileOption` functions as their final arguments. These can be used to modify the behavior of the resultant struct, in particular they replace the `…WithRowLimit` variants of those methods with the result of calling `xlsx.RowLimit` and they add the ability to define a custom backing store for the spreadsheet data to be held in whilst processing. The full API docs can be viewed using go’s built in documentation tool.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 14
    ASN.1 library for Python
    ASN.1 types and codecs (BER, CER, DER) implementation in Python programming language. A collection of various ASN.1-based protocols data structures is supplied in a dedicated Python package. Project moved to GitHub: https://github.com/etingof/pyasn1
    Downloads: 17 This Week
    Last Update:
    See Project
  • 15
    LOL HTML

    LOL HTML

    Low output latency streaming HTML parser/rewriter with CSS API

    Low Output Latency streaming HTML rewriter/parser with CSS-selector based API. It is designed to modify HTML on the fly with minimal buffering. It can quickly handle very large documents, and operate in environments with limited memory resources. The crate serves as a back-end for the HTML rewriting functionality of Cloudflare Workers, but can be used as a standalone library with a convenient API for a wide variety of HTML rewriting/analysis tasks. The parser switches back to the tag scanner as soon as input leaves the scope of all selector matches. The tag scanner may also sometimes switch the parser to the Lexer - if it requires additional tag information for the parsing feedback simulation. Having two different parser implementations for the same grammar will increase development costs and is error-prone due to implementation inconsistencies. We minimize these risks by implementing a small Rust macro-based DSL which is similar in spirit to Ragel.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    Ruby

    Ruby

    Ruby programming language

    A dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write. Ruby is a language of careful balance. Its creator, Yukihiro “Matz” Matsumoto, blended parts of his favorite languages (Perl, Smalltalk, Eiffel, Ada, and Lisp) to form a new language that balanced functional programming with imperative programming. He has often said that he is “trying to make Ruby natural, not simple,” in a way that mirrors life. Since its public release in 1995, Ruby has drawn devoted coders worldwide. In 2006, Ruby achieved mass acceptance. With active user groups formed in the world’s major cities and Ruby-related conferences filled to capacity. Ruby-Talk, the primary mailing list for discussion of the Ruby language, climbed to an average of 200 messages per day in 2006. It has dropped in recent years as the size of the community pushed discussion from one central list into many smaller groups.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 17

    XML Unit

    XMLUnit provides assertions that help testing code that produces XML.

    XMLUnit 2.x Development Moved to GitHub XMLUnit provides help with testing code that creates or consumes XML. XMLUNit 2.x is available for both Java and .NET with a similar API. Development of this version has moved to a GitHub organization[1] with two git repositories for Java and .NET respectively. All discussion about XMLUnit independent of any version will happen on the XMLUnit general mailing list[2]. XMLUnit for Java 1.x is no longer maintained, please use the legacy artifacts of XMLUnit 2.x if you still need APIs compatible with XMLUnit 1.x. We keep using the Sourceforge infrastructure that has served as well for many years to host forums and mailing lists. XMLUnit for .NET 0.x is not maintained any longer. [1] https://github.com/xmlunit [2] https://sourceforge.net/p/xmlunit/mailman/xmlunit-general/
    Downloads: 13 This Week
    Last Update:
    See Project
  • 18
    CssToInlineStyles class

    CssToInlineStyles class

    Enables you to convert HTML-pages/files into HTML-pages/files

    CssToInlineStyles is a class that enables you to convert HTML-pages/files into HTML-pages/files with inline styles. This is very usefull when you're sending emails. UTF-8 charset is not always detected correctly. Make sure you set the charset to UTF-8 using the correct meta-tag in the head. CssToInlineStyles class is used on each site based on Fork CMS. CssToInlineStyles class is used by Laravel Framework.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Cutelyst

    Cutelyst

    Web Framework built on top of Qt, using the approach of Catalyst

    Create fast and modern web applications that share the same code as your desktop or mobile apps. Why have two or more development teams focused on a specific platform when you can have a single team coding the same code, sharing skills and lines of code. With Qt, you already can write applications for Windows, Linux, Android, MacOS, and iOS using the same source code, Cutelyst allows you to share your C++ code with your web application. Cutelyst has a WSGI server that supports HTTP/1.1, HTTP/2, FastCGI, and WebSockets, it can even be embedded in your application if you like. It also features a plugin for uWSGI which gives us support for HTTP/1.0, FastCGI, and uWSGI protocols but is slower and doesn't support WebSockets. Running standalone or behind a web server is really easy. With your application logic written in C++ your application get's really small, a full CMS (like this one) uses around 5MB of RAM which can be shared with other instances of the same application.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Simplified LNCS Template

    Simplified LNCS Template

    Improved Lecture Notes in Computer Science (LNCS) template

    Improved Lecture Notes in Computer Science (LNCS) template. To build the whole document, execute the provided command. Note that this requires a working Perl installation. In case something goes wrong, you can instruct the LaTeX compiler to stop at the first error. Modern packages such as microtype, cleveref, csquotes, hyperref, hypcap, upquote, natbib, booktabs. (Optional) LaTeX compilation using the modern lualatex compiler. Ready-to-go configuration for latexindent.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    jl

    jl

    Functional sed for JSON

    jl ("JSON lambda") is a tiny functional language for querying and manipulating JSON.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    json_serializable

    json_serializable

    Generates utilities to aid in serializing to/from JSON.

    Provides Dart Build System builders for handling JSON.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    matlab2tikz

    matlab2tikz

    Converts MATLAB®/Octave figures to TikZ/pgfplots figures

    matlab2tikz is a MATLAB(R) script to convert native MATLAB(R) figures to TikZ/Pgfplots figures that integrate seamlessly in LaTeX documents. matlab2tikz supports the conversion of most MATLAB figures, including 2D and 3D plots. For plots constructed with third-party packages, your mileage may vary. Sometimes, MATLAB makes it hard to create matching LaTeX plots by keeping invisible objects around or stretching the plots too far beyond the bounding box.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    x3d

    x3d

    X3D is the open-standard format for 3D graphics scenes on the Web.

    Extensible 3D (X3D) Graphics is a royalty-free International Standard for real-time interactive 3D graphics on the Web, providing unsurpassed interoperability for 3D communications on the Web. This project includes source for example X3D scene libraries and multiple X3D codebases produced by Web3D Consortium members. All open-source contributions are welcome.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 25
    A real-time graph plotter. While your application is computing and logging results to a CSV file using the LiveGraph Writer API, the plotter lets you visualise and monitor the results live - by instantly plotting charts and graphs of the data.
    Downloads: 5 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
MongoDB Logo MongoDB