Open Source Objective C Text Editors

The AbiWord word processor is a full-featured cross-platform word processor.

BibDesk is a graphical bibTeX bibliography manager for Mac OS X.

MacDown is an open source Markdown editor for macOS, released under the MIT License. It is heavily influenced by Chen Luo’s Mou.

Powerful and customizable text editor with support for a huge list of programming languages and developed as open source. Making multiple changes at once, swapping pieces of code, and a lot more is made trivial with TextMate’s easy way to add multiple insertion points. Select what you want to search, what you want to search for, and TextMate will present the results in a way that makes it easy to jump between matches, extract matched text, or preview desired replacements. See what files have changes in the file browser view, what lines have changes in the editor view, bring up a diff of the current file’s changes, commit a subset, TextMate supports it all for all the major version control systems. One file mixing languages? Projects using different build systems? Third party code with different formatting preferences? TextMate can handle it all by associating detailed scope selectors with key shortcuts, settings, etc.

Powerful text framework for iOS to display and edit rich text. YYText is a component of YYKit. YYText is UILabel and UITextView API compatible. High performance asynchronous text layout and rendering, extended CoreText attributes with more text effects. Text attachments with UIImage, UIView and CALayer. Custom highlight text range to allow user interact with, text parser support (built in markdown/emoticon parser), text container path and exclusion paths support. Vertical form layout support (for CJK text). Image and attributed text copy/paste support, attributed text placeholder support, custom keyboard view support. Undo and redo control. Attributed text archiver and unarchiver support, multi-language and VoiceOver support, interface Builder support, and fully documented.

iTeXMac is an integrated software which components are: - a text editor dedicated to D.E. Knuth's TeX typesetting system - a frontend to a teTeX like distribution, that includes TeX engines and tools - a PDF viewer

Smultron is a text editor written in Cocoa for Mac OS X Leopard 10.5 which is designed to be both easy to use and powerful.

An Objective-C Framework for Regular Expressions using the PCRE Library for Mac OS X Cocoa and GNUstep.

CC Mode is a GNU Emacs and XEmacs mode for editing C and other languages with similar syntax; currently C++, Objective-C, Java, CORBAs IDL, Pike, and AWK. It is a standard package in both GNU Emacs and XEmacs.

AquaLess is a text pager for Mac OS X, intended as a drop-in replacement for the less command. It allows you to browse lengthy text output from Unix command line tools in a separate window, so you can keep working in the terminal while you read.

A small Objective-C library which provides a SAX-like object-oriented interface to the Expat XML parser library.

HunSpell spell checker port to MacOSX.

The Writers Forge is a fiction authoring suite, an IDE for writers. The tool suite will provide integrated support for writing screenplays and prose, and developing plot and character. The backend will support many target formats, including XML and PDF.

1337writer is a converter for 'normal' text to 1337 / l33t text (leetspeech). simply input your text and the programm will output the 1337 version. (hardcore 1337 or simple 1337).

Alpaca is a programmable rich-text editor for authors using Mac OS X. It is built on, and programmable in, Common Lisp, and has a complete Common Lisp programming environment built into it.

A blosxom weblog editor for Mac OS X, Blapp streamlines the blogging process with a convenient, native editing interface for blosxom weblogs. It presents a view of the weblog hierarchy with post titles, displays live-updating HTML preview in the editor, a

Block Art is a MacOSX application for viewing ASCII art graphics documents. It can open .nfo, .diz and .asc documents, and properly displays the contained ASCII art.

CleverRabbit is an editor for linguists and translators. It allows multiple revisions of the same passage to coexist for easy comparison during translation, backtranslation, and consultant checking.

A Cocoa port of Emacs for MacOS X and GNUstep

A Cocoa port of GNU Emacs for GNUstep and MacOS X.

Joust is a simple yet powerful HTML editor programmed for Mac OS X using Cocoa frameworks. Includes live previewing and helpful programming tools.

Kod is an open, modern text editor project for programmers on Mac OS X, built with the idea of being a versatile everyday tool for writing code and plain text. The project’s design philosophy emphasizes approachability and a relatively low barrier to entry, including UI concepts like tabs as a core part of the experience. Beyond being “yet another editor,” Kod aimed to explore how a programmer-oriented editor could feel more universal and user-friendly, especially for people who write code but don’t necessarily want an overly complex environment. The repository contains the full editor codebase and related components, but it is also clearly marked as an archived (read-only) project, indicating it’s no longer actively developed. Even so, it remains useful as a reference implementation for macOS editor architecture, UI/editor interaction patterns, and the tradeoffs involved in building a full desktop editor.

A simple, lightweight Journal/Diary application built around CoreData.

MacDown 3000 is a lightweight, open-source Markdown editor for macOS, designed for efficient writing and document formatting. It combines a text editor with live HTML previews that update as users type. The application supports CommonMark and GitHub Flavored Markdown, including tables, task lists, and fenced code blocks. Prism-based syntax highlighting improves the readability of embedded programming code. Mathematical notation and Jekyll front matter extend its capabilities for technical documentation. Users can export documents to HTML or PDF with customizable styling. Folder-based workspaces provide sidebar navigation and tabbed editing across multiple Markdown files. Additional editing conveniences include automatic bracket pairing, list continuation, and formatting shortcuts. It supports both Apple Silicon and Intel Macs.

ObjPCRE is a thin PCRE wrapper written in 100% Objective-C/C. Built around the foundation of NSObjects, it can be easily implemented into any Cocoa or iPhone application.