Browse free open source Text Editors and projects for Windows and ChromeOS below. Use the toggles on the left to filter open source Text Editors by OS, license, language, programming language, and project status.

  • Full-stack observability with actually useful AI | Grafana Cloud Icon
    Full-stack observability with actually useful AI | Grafana Cloud

    Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

    Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
    Create free account
  • 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
    Hunspell is a spell checker and morphological analyzer library and program designed for languages with rich morphology and complex compounding or character encoding. Hunspell interfaces: Curses, Ispell compatible pipe interface, OpenOffice.org UNO module
    Leader badge
    Downloads: 343 This Week
    Last Update:
    See Project
  • 2
    Allows editing of any size file in hexadecimal, decimal and ASCII. A great tool that allows you to edit and analyze the contents for either the data or resource fork of any type of file. 68K, PPC and Carbon run on MacOS 7-9 and X.
    Leader badge
    Downloads: 187 This Week
    Last Update:
    See Project
  • 3
    Command-line/Ant-task/embeddable text file preprocessor. Macros, flow control, expressions. Recursive directory processing. Extensible in Java to display data from any data sources (as database). Can generate complete homepages (tree of HTML-s, images, etc.)
    Leader badge
    Downloads: 91 This Week
    Last Update:
    See Project
  • 4
    iText®, a JAVA PDF library

    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/.
    Leader badge
    Downloads: 164 This Week
    Last Update:
    See Project
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 5

    OS X Portable Applications

    Portable OS X FOSS applications

    OS X FOSS portable applications are packaged so you can carry around on any portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (or also on your internal hard disk), taking your preferences with you.
    Downloads: 30 This Week
    Last Update:
    See Project
  • 6
    FCKeditor

    FCKeditor

    FCKeditor (retired)

    FCKeditor is the previous version of CKEditor and has been discontinued after version 2. The new CKEditor is redesigned from the ground up, offering more WYSIWYG text editing features, enhanced security and better integration. Don’t force yourself with retro FCKeditor. Switch to the new, cool CKEditor at ckeditor.com
    Downloads: 22 This Week
    Last Update:
    See Project
  • 7
    Ada Class Library

    Ada Class Library

    Ada Class Library - an object orientated library for Ada.

    Text search and replace. Scripting (small tool programs). CGI scripts. Execution of external programs (incl. I/O redirection). Garbage Collection. Extendended Booch Components. CD-Recorder
    Leader badge
    Downloads: 71 This Week
    Last Update:
    See Project
  • 8
    Pyana is a extension module that allows Python programs to interface with the Apache Software Foundation's Xalan XSLT transformation engine.
    Leader badge
    Downloads: 40 This Week
    Last Update:
    See Project
  • 9
    TeX Creator

    TeX Creator

    A LaTeX editor with a built-in TeXSample service client

    TeX Creator is a simple LaTeX editor, which has all the necessary features of the text editor. It is also a client of the TeXSample service. TeX Creator is designed both for beginners and for professionals. TeXSample is an online service, which is for use in the environment of schools and institutions of higher education. With it, users can share the logically complete fragments of textbooks, such as theorems, examples, definitions, etc. In addition, TeXSample gives users a full-featured on-line compiler, which works just the same as a usual local compiler.
    Downloads: 24 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
  • 10
    PDFBox is a Java PDF Library. This project will allow access to all of the components in a PDF document. More PDF manipulation features will be added as the project matures. This ships with a utility to take a PDF document and output a text file.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 11
    Early Access iText, a PDF generation library in Java
    Downloads: 10 This Week
    Last Update:
    See Project
  • 12
    JODReports is a solution for generating dynamic documents and reports in Java based on the OpenDocument format (ODF). Templates can be easily composed with a word processor such as OpenOffice.org Writer. Data sources include POJOs and XML.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 13
    PDF Clown

    PDF Clown

    General-Purpose PDF Library for Java and .NET

    PDF Clown is a general-purpose Java and .NET library for manipulating PDF files through multiple abstraction layers, rigorously adhering to PDF 1.7 specification (ISO 32000-1). This project aims to provide a universal access to PDF files (creation, reading, editing, rendering...) through an accurate and elegant object-oriented API. * Features: http://pdfclown.org/overview/features/ * Overview: http://pdfclown.org/overview/architecture/ * Website: http://pdfclown.org/ * Blog: http://www.pdfclown.org/blog/ * Twitter: https://twitter.com/PDFClown
    Downloads: 3 This Week
    Last Update:
    See Project
  • 14
    txt2html (Text to HTML converter) is a Perl program that converts plain text to HTML. It supports headings, lists, tables, simple character markup, and hyperlinking, and is highly customizable.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 15
    Mamba is a extensible xml templates preprocessor wrote in Python. Using it, you can rapidly develop powerful applications ready to integrate with the internet. It can be used to work as a generic CGI program or for generate content.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 16
    Devchekio is a GTK+ 2 FTP check in/out code editor. It was inspired by the use of DreamWeaver's system to access files like a library system.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 17
    This projects aims to create a NFO generator which will be able to create different kinds of nfo files with different artwork for the different needs of its users.
    Leader badge
    Downloads: 8 This Week
    Last Update:
    See Project
  • 18
    Jericho HTML Parser is a java library allowing analysis and manipulation of parts of an HTML document, including server-side tags, while reproducing verbatim any unrecognised or invalid HTML.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Ekit is a Java HTML editor applet and application.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 20
    Download server for http://www.opensourcepan.co.uk/
    Downloads: 5 This Week
    Last Update:
    See Project
  • 21
    This is a toolkit for creating custom desktop Content Management Systems. Those systems are meant to run locally not requiring to execute scripts on the server side. Customized for specific document structure they should be maximally easy to use by end us
    Downloads: 5 This Week
    Last Update:
    See Project
  • 22
    cpDetector is a proxy for codepage detection of documents. It delegates to multiple instances that try to detect the codepage by different techinques. A command line executeable is shipped that allows to sort documents by codepage.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 23
    RTF to HTML converter for use both with your applications and as a standalone tool. Small and fast. Processes tables better than any other tool I've seen.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 24
    DictEm is an extremely customizable Dictionary client for (X)Emacs. It implements functions of the client part of the Dictionary protocol (RFC-2229). It widely uses autocompletion and provides powerful API that allows to heavily extend its functionality.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 25
    htmlarea

    htmlarea

    Small, powerful, full featured WYSIWYG editor

    HTMLArea 4 is a browser based WYSIWYG editor that easily replaces the TEXTAREA in your web pages. It is written in JavaScript, and suitable for use in any modern web browser, and any page on your web site. Current version is 4.0-2016-08-29
    Downloads: 2 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB