Open Source Objective C Business Software

Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim requires OS X 10.10 or higher.

Task Coach - Your friendly task manager. Task Coach is a free open source todo manager. It grew out of frustration about other programs not handling composite tasks well. In addition to flexible composite tasks, Task Coach has grown to include prerequisites, prioritizing, effort tracking, category tags, budgets, notes, and many other features. However, users are not forced to use all these features; Task Coach can be as simple or complex as you need it to be. Task Coach is available for Windows, Mac OS X, and GNU/Linux; and there is a companion iOS app.

KeyCastr requires access to the macOS Accessibility API in order to receive your key events and broadcast the keystrokes you are interested in. On newer versions of macOS (10.15+) there is a new Input Monitoring menu under Security & Privacy within the System Preferences app, and KeyCastr will appear there automatically the first time you run it. Simply unlock this menu and check the box next to KeyCastr to enable it. On older versions of macOS, or if for some reason the app doesn't appear under the Input Monitoring menu (or if you want to pre-enable it) then you may manually add it to the list of apps in the Accessibility menu. If KeyCastr is already in the list, then click the, button and add KeyCastr again to be certain that the right application is chosen. Make sure to check the "Display all keystrokes" checkbox if you would like to display more than just the modifier keys.

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

A native Macintosh front-end and distribution for the GAP computer algebra system. It provides a Mac-like command editing environment and save/load, while making available graphical libraries compatible with xgap.

A multiplatform C++ library for dynamic generation of Excel .xls files containing multiple worksheets. Unlike .csv files, these can be directly opened by Excel and thus provide an excellent way to output large data sets that require further analysis. To see the latest changes, select "Files" and view the README text displayed at the bottom of that pane. IMPORTANT: Major changes are contained in the current SVN source. If you have time please try to use it or the xlslib-package-2.4.0b1.zip archive, and enter bug reports on any problems! Changes: - library specific strings now in their own namespace - iOS Objective-C library - most project files updated (MSVS etc) - C bridge now supports formulas Note: there is a related SF project, libxls, to read Excel files.

The ZEG (Zero Effort Groupware) edition of SOGo is intended to provide a complete out-of-the-box testing environment of SOGo, the Open Source messaging and calendaring software.

DateTools was written to streamline date and time handling in iOS. Classes and concepts from other languages served as an inspiration for DateTools, especially the DateTime structure and Time Period Library for .NET. Through these classes and others, DateTools removes the boilerplate required to access date components, handles more nuanced date comparisons, and serves as the foundation for entirely new concepts like Time Periods and their collections. All the classes required for DateTools are located in the DateTools folder in the root of this repository. DateTools.h contains the headers for all the other files. Import this if you want to link to the entire framework. One of the missions of DateTools was to make Date feel more complete. There are many other languages that allow direct access to information about dates from their date classes, but Date (sadly) does not.

PDFView is a simple, yet powerful, Mac Os X PDF viewer, with advanced integration with LaTeX.

Application sharing software that allows individual windows to be replicated to other computers. Remote collaboration tool based on a modified VNC protocol. Its advantage is to keep some things, like email, private, while sharing other desktop apps.

AquaTerm is a Mac OS X grahics renderer. It allows command line applications written in ObjC, C, FORTRAN, Lisp, Perl or Python to display vector graphics, text and images using a simple API. Adapters for gnuplot, PGPLOT, and PLplot exists as well.

The project has moved to GitHub: https://github.com/pixmeo/osirix

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

Various computational physics projects for the Mac / GNUStep platforms.

Allows the exploration and rendering of 3D strange attractors on Mac OS X using the Cocoa API.

The purpose of the CoCalc project is to develop a simple RPN calculator application for use on laptops running OS X. It has been developed in Cocoa and Objective C, although it may change to a PyObjC application in the future.

Kexpcalc is an experience calculator and NPC generator for D&D 3.5. It also includes an item creation calculator (scrolls, potions, wands, and staffs).

FlightTrack is a 2D/3D GPS track viewing software for light aviation pilots using MacOS X.

Simulates a biologically diverse tropical island, and the ape inhabitants cognitive processes. For MacOS X, iPad, Windows and Linux. Features a non-polygonal graphics engine and a command-line version

Narrative is a Mac OS X native plotting framework written with the Cocoa API. It is already capable (see, e.g., www.trade-strategist.com), but will evolve into a complete OO solution to plotting in Cocoa and GNUStep.

An easy way for single crystal structure analysis. Graphical software for single crystal structure refinement. CRYSTALBUILDER uses SHELXL-97 software for the refinement and makes directly possible the molecular structure visualization.

A Mac OS X framework implemented in Objective-C 2.0 that reads and parses ASCII DXF files. The framework returns an array of custom entity objects that can be used as needed by the program implementing this library.

Report generator for student portfolio systems that have to aggregate data about pass rates. Takes tab separated files and generates a number of reports based on user supplied portfolio categories and grading/ranking schemes.

QuickDicom is an easy to use dicom medical imaging package for Mac OSX, providing QuickLook, Spotlight, Quartz Composer, Window/Level and a dicom file analyzer. Also included is the iiDicom Framework for image/dictionary usage in Objective C and Python.

EasyChem is designed to draw chemical molecules in an intuitive way, with a very high quality (designed for book-publishing). Exporting is done to various formats (PostScript, Fig, LaTeX, etc.) to help you integrate your drawing in any software you use.