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

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

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  • 1
    VSCodium

    VSCodium

    binary releases of VS Code without MS branding/telemetry/licensing

    Microsoft’s vscode source code is open source (MIT-licensed), but the product available for download (Visual Studio Code) is licensed under this not-FLOSS license and contains telemetry/tracking. The VSCodium project exists so that you don’t have to download+build from source. This project includes special build scripts that clone Microsoft’s vscode repo, run the build commands, and upload the resulting binaries for you to GitHub releases. These binaries are licensed under the MIT license. Telemetry is disabled. If you want to build from source yourself, head over to Microsoft’s vscode repo and follow their instructions. VSCodium exists to make it easier to get the latest version of MIT-licensed VSCode. Please note that some Visual Studio Code extensions have licenses that restrict their use to the official Visual Studio Code builds and therefore do not work with VSCodium.
    Downloads: 127 This Week
    Last Update:
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  • 2
    SourceCookifier: Plugin for Notepad++
    A plugin which uses Exuberant Ctags to parse either only the currently activated source file or multiple files of so-called sessions. The results are shown and can be browsed in a treeview inside of a dockable window.
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    Downloads: 566 This Week
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  • 3
    Virastyar

    Virastyar

    Virastyar is an spell checker for low-resource languages

    Virastyar is a free and open-source (FOSS) spell checker. It stands upon the shoulders of many free/libre/open-source (FLOSS) libraries developed for processing low-resource languages, especially Persian and RTL languages Publications: Kashefi, O., Nasri, M., & Kanani, K. (2010). Towards Automatic Persian Spell Checking. SCICT. Kashefi, O., Sharifi, M., & Minaie, B. (2013). A novel string distance metric for ranking Persian respelling suggestions. Natural Language Engineering, 19(2), 259-284. Rasooli, M. S., Kahefi, O., & Minaei-Bidgoli, B. (2011). Effect of adaptive spell checking in Persian. In NLP-KE Contributors: Omid Kashefi Azadeh Zamanifar Masoumeh Mashaiekhi Meisam Pourafzal Reza Refaei Mohammad Hedayati Kamiar Kanani Mehrdad Senobari Sina Iravanin Mohammad Sadegh Rasooli Mohsen Hoseinalizadeh Mitra Nasri Alireza Dehlaghi Fatemeh Ahmadi Neda PourMorteza
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    Downloads: 478 This Week
    Last Update:
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  • 4
    OneNote Md Exporter

    OneNote Md Exporter

    ConsoleApp to export OneNote notebooks to Markdown formats

    OneNote Md Exporter is a console application running on Windows that exports your OneNote notebooks in different markdown formats. Evaluate or migrate to an alternative Knowledge Management Software like Joplin, Obsidian or other software based on Markdown format. Backup your OneNote Notebooks in an interoperable and open file format.
    Downloads: 18 This Week
    Last Update:
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

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  • 5
    The goal for this project is to provide translators to allow for interoperability between applications based on ODF (OpenDocument) 1.1 standards and ECMA Office OpenXML based Office applications.
    Downloads: 73 This Week
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  • 6
    Notepads

    Notepads

    A modern, lightweight text editor with a minimalist design

    I have been waiting long enough for a modern Windows 10 notepad app to come before I decided to create one myself. Don’t get me wrong, Notepad++, VS Code, and Sublime are great text editors. I have used them all and I will continue to use them in the future. However, they are either too heavy or look less appealing. There are times that I just wanted to use Windows Notepad for things like writing notes or editing config files. So I decided to create a win32 notepad replacement here and try to give it a modern look and feel. Most importantly, it has to be blazingly fast and appeal to everyone.
    Downloads: 14 This Week
    Last Update:
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  • 7
    LMG2Shruti is a free non unicode to unicode font converter. It converts the LMG Arun font to Gujarati unicode Shruti font.
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    Downloads: 100 This Week
    Last Update:
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  • 8
    CSV Quick Viewer

    CSV Quick Viewer

    CSV Quick Viewer

    Windows file viewer for delimited text files, such as CSV or tab-delimited files. No configuration is required—simply open any delimited text file and view the data in a clean, tabular format. For files with unusual formatting, optional settings allow quick adjustments to ensure proper display.
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    Downloads: 49 This Week
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  • 9
    AutoText

    AutoText

    Text expander(auto-type) application

    AutoText is a text expander(auto-typer) application that can minimize time that you spent typing phrases that your often use. You can bind an abbreviation(autotext) to some text snippet, phrase or sentence and that text will be automatically typed by AutoText each time you type the abbreviation. Keyboard keys press/hold/toggle is supported by using macros. AutoText works in any Windows program.
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    Downloads: 61 This Week
    Last Update:
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    Build Securely on AWS with Proven Frameworks

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  • 10

    ConcatPDF

    PDF Concatenation Tool

    ConcatPDF is the tool to concatenate PDF files. It can concatenate, extract, encrypt, decrypt, configure PDF files, convert image files to PDF. GUI version and CUI version are both available. iText.NET is iText porting on .NET Framework by J#. This library allows you to generate PDF, (X)HTML, XML, RTF files on Microsoft.NET Framework including ASP.NET.
    Downloads: 38 This Week
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  • 11
    The goal of this tool is to simplify and accelerate the process of creating bookmarks for DjVu and PDF documents. You can see additional information on the project page.
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    Downloads: 29 This Week
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  • 12
    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: 23 This Week
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  • 13
    AvaloniaEdit

    AvaloniaEdit

    Avalonia-based text editor (port of AvalonEdit)

    This project is a port of AvalonEdit, a WPF-based text editor for Avalonia.
    Downloads: 5 This Week
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  • 14
    Markdig

    Markdig

    A fast, powerful, CommonMark compliant, extensible Markdown processor

    A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET. Very fast parser and HTML renderer (no-regexp), very lightweight in terms of GC pressure. Abstract Syntax Tree with precise source code location for syntax tree, useful when building a Markdown editor. Check out MarkdownEditor for Visual Studio powered by Markdig! Even the core Markdown/CommonMark parsing is pluggable, so it allows to disable built-in Markdown/Commonmark parsing (e.g Disable HTML parsing) or change behavior. Parses trivia (whitespace, newlines and other characters) to support lossless parse ⭢ render roundtrip. This enables changing markdown documents without introducing undesired trivia changes. Special attributes or attached HTML attributes (inspired from PHP Markdown Extra - Special Attributes). Diagrams extension whenever a fenced code block contains a special keyword, it will be converted to a div block with the content as-is.
    Downloads: 3 This Week
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  • 15
    StructuredXmlEditor

    StructuredXmlEditor

    An editor for structured xml, providing a graphical interface

    An editor for structured xml, providing a graphical interface. This allows you to specify the format of the xml file using a definition file. This definition is then converted into a graphical editor that allows simple editing. Click 'create new' to be led through the process of creating the project file. It will prompt you to select the asset's root folder, then a folder to store definitions in. You can also select a premade ProjectRoot.xml file to use instead. Pick any number of files of the data type you want to generate data for then click open. This will show you a message box with the path to the saved definition. Each data type in the tool exists in two parts. The definition and the item. The definition describes the general parameters of the type (e.g. name, default value, min, max, etc). The item is a single instantiation of that definition. The item contains the current editted values, children and various changeable parameters.
    Downloads: 3 This Week
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  • 16
    Unicode Converter

    Unicode Converter

    All in one Text, Decimal, and Unicode Converter as you type.

    Unicode Converter is an open source software for converting Text to Unicode and decimal and vice versa while you type. No clicks or convert button! Latest source code: https://github.com/ahmed-fathy/unicode-converter Conversion Options: Text -> Unicode and Decimal Unicode -> Text and Decimal Decimal -> Text and Unicode *Smart settings: The settings take effect directly after you change it and will be saved for you and applied in next runs. Formatting options: Unicode and decimal perfix and postfix to get your desired output, such as \u0001  0001 etc...
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    Downloads: 72 This Week
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  • 17
    Notes Keeper

    Notes Keeper

    A program for saving and organizing notes

    Notes Keeper 5.2.3.0 Don't you like your notes to be saved in the clouds, where you can't control. Do you like to have all your notes with you. Then you need Notes Keeper. A program for saving and organizing notes Notes Keeper will let you create notes, format them in all ways. You can add files, images, text and very basic tables to the notes. Change sentences/words cases and lock them from other people. Organize your notes with folders and tree. After you finish export your note(s) to a text file or rtf file, print it from your printer, or send it as email or attachment to you family or friends. Its free. Not like any other note taking software. feel free to report any bugs .NET 4.6 and Microsoft Visual C++ 2015 Update 3 runtime are needed to run Notes Keeper
    Downloads: 39 This Week
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  • 18
    A transparent notepad programmed in C#. Now with Rich Text Support!
    Downloads: 40 This Week
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  • 19
    Markdown Monster

    Markdown Monster

    An extensible Markdown Editor, Viewer and Weblog Publisher for Windows

    Markdown Monster is a powerful, yet easy-to-use Markdown editor with syntax highlighting and sophisticated and fast edit features. A collapsible, synced, live preview lets you see your output as you type and scroll. Easily embed or paste images, links, tables and code using raw markup or our smart UI helpers to simplify many operations with a few keystrokes or a click or two. Paste images from the clipboard or drag and drop from Explorer or our built-in file browser. Inline spell-checking and word counts keep your content streamlined. You can export Markdown to PDF or HTML on disk or copy Markdown selections as HTML to the clipboard. The HTML preview can display syntax-colored code snippets for most coding languages. Choose from light or dark app themes, and individual and fully customizable preview themes. Use the built-in folder browser to open, manage and drag files into content, use the document outline to quickly jump through content, or use our shell integration.
    Downloads: 2 This Week
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  • 20
    The “Save as DAISY XML” add-in was created through an open source project with Microsoft, Sonata Software Ltd. and the Digital Accessible Information System (DAISY) Consortium and can be downloaded on sourceforge.
    Downloads: 7 This Week
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  • 21
    Chuletas / Cribr

    Chuletas / Cribr

    A powerful text processor to make cheat sheets easily

    A powerful text processor to make cheat sheets in an easy and suitable way. Text compressor, interface based in Office 2010, equation editor, real time previw & spell checker.... are some of its features. In addition, it can also works as a normal text editor, putting at your fingertips all the power of a great text editor comparable to Microsoft Word or LibreOffice, but with a much lighter installation and free of charge. In spanish speaking countries is known as Chuletas, the spanish translation of cheat sheet. In the rest of the world it's known as Cribr (from crib-sheet).
    Downloads: 9 This Week
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  • 22
    The main goal of the Office Binary (doc, xls, ppt) Translator to Open XML Project is to create software tools, plus guidance, showing how a document written using the Binary Formats (doc, xls, ppt) can be translated to Office Open XML.
    Downloads: 8 This Week
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  • 23
    gemini-editor

    gemini-editor

    Custom script editor for RPG Maker XP, VX, and VXA

    Gemini is a custom-built script editor, made using C# and .NET, for working on RPG Maker XP, VX, and VXA projects. It features enhanced IDE features that cannot be found in the default editors.
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    Downloads: 28 This Week
    Last Update:
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  • 24
    Gnome Subtitles
    Gnome Subtitles is a subtitle editor for the GNOME desktop. It supports the most common text-based subtitle formats, video previewing, timings synchronization and subtitle translation.
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    Downloads: 23 This Week
    Last Update:
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  • 25
    A Java/.NET full-featured cross-platform Vietnamese Unicode text editor. Open, edit, spell check, print, convert, sort, and save Vietnamese text-based files in Unicode formats.
    Downloads: 8 This Week
    Last Update:
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