Thursday, September 25, 2014

GanttProject and Android

Mobile devices are all around us and more  and more people ask if GanttProject runs on iOS and Android tablets. It doesn't, but there is a couple of third-party Android apps which can read GanttProject files. I installed them on my tablet and gave them a test drive.


GanttMan is developed by Martin Doudera from Brno, Czech Republic.

Gantt and Resource charts look very close to original GanttProject charts. There is not too much interaction on the charts: you can only scroll, pinch zoom or select a task with a long tap. The remaining user interface also resembles GanttProject and is quite intuitive and simple.

Task properties dialog in GanttMan

Rescheduling overdue tasks

GanttMan doesn't support all GanttProject features: you can't see baselines or custom columns, can't export project to PDF or image.  However, it adds some features which are missing in GanttProject. Rescheduling of overdue tasks is one of them. You can find all tasks which are not yet done by the moment and ask GanttMan to either mark them as completed or extend them to finish on the current date. Optionally overdue tasks can be shown on project open, which might serve as a handy todo reminder.

Sample project file which comes with GanttProject opens in GanttMan without any problems. I tried to stress-test GanttMan and opened a big real-world project consisting of some 350 tasks and it worked pretty smooth.

Besides traditional file transfer through SD card, there is a little bit hidden option to send projects to Dropbox, Google Drive, email or other destinations included into Android's standard "Share" feature. Please be aware that  unsupported bits of information in the project file may be destroyed on saving, so if you have a custom column in your project, open file in GanttMan add a new task and save file then the custom column is lost. Martin plans to fix it, though.

GanttMan is freemium and (surprise!) doesn't show any ads. Pro version costs about 3 bucks and adds task filters and a few other features, such as multiselection.


GanttDroid is developed by Spanish guys from Rato WRS and can also read GanttProject files.

GanttDroid user interface  resembles GanttProject too but it has more custom look. Its Gantt chart is interactive, and it is possible to change task dates and draw dependencies directly on the chart, which is really nice. However, overall impression is that interface is a little bit cluttered and unsteady.

GanttDroid allows to change task dates directly on the chart

GanttDroid also provides a list of overdue tasks with the only option to mark them as completed. It can also export chart to raster image.

Task properties dialog in GanttDroid
GanttDroid can read and write files to SD card and Dropbox/Google Drive (in paid versions). Unlike GanttMan, it seems to preserve unsupported bits, so working on the same file from desktop GanttProject and GanttDroid sounds possible.

For stress-testing I opened the same big project and overall GanttDroid worked good, although it started freezing for a couple of seconds on scrolling (especially vertical one) and tree nodes expansion.

GanttDroid is also freemium. Lite version is free and shows ads which I personally find quite annoying. Pro version (priced at ~$10) and Extended (~$15) add a number of interesting features, such as Dropbox and Google Drive integration and project and task templates.


Both apps look interesting; I liked GanttMan more because of its simple and clean user interface, but GanttDroid is more feature rich and features may overweight its UI quirks. I hope that they both will develop further to provide excellent user experience and will be great companions to desktop GanttProject.

Friday, September 19, 2014

GanttProject 2.7 beta III

We just've published the third beta of GanttProject 2.7. What's new?

Split one-off and recurring holidays

We moved one-off and recurring holidays in the Project Calendar settings to separate tabs.

One-off and recurring holidays on different tabs

Recently used colors

Java Swing color chooser won't remember chosen colors across program runs, so we extended it a little bit and added our recent colors list. It is stored in a project file and will show up on any computer running GP 2.7

Recent colors list in the color chooser

There is a new option in the Application UI settings which allows to choose application font. A number of bugs has been fixed, in particular, drag'n'drop of multiple tasks now works fine, Outline number column is used in CSV import to reconstruct WBS, and unlock works fine in WebDAV dialog.

Download GanttProject 2.7 beta III from our web site, test it and report bugs if you find them. 

Monday, August 25, 2014

Web site update

We have launched an update of our website. It now features responsive mobile-friendly design, and hopefully is more attractive and informative. We tested it with the major combinations of browsers and operating systems, but we could easily miss some layout glitch. Should you find any problems, please let us know in Twitter or in the ticket tracker

Forum pages will be using old design for a while. We'll update them too in a few days. on 1600x900 screen

Thursday, August 7, 2014

Mirror of GanttProject source code repository on Github

We're keeping our code in Mercurial repository on Google Code Hosting  and we haven't seen any issues except for just one: a "third-party" developer can't easily propose a change in our code. That's what GitHub is really good at, and we decided to setup a mirror of GanttProject repository on GitHub. We're using hg-git for that and hope that the mirror will be as actual as the main Mercurial repo.

Waiting for pull requests from you!

Wednesday, August 6, 2014

GanttProject 2.7 goes to public beta testing

The second beta of GanttProject 2.7 is available for downloading. GanttProject 2.7 adds simple task cost calculations, weekend exceptions and import of project calendars from iCalendar format.

We're starting public beta testing and bugfix phase, so bug reports are welcome. Please read bug reporting guidelines to make your bug report really good.

Tuesday, April 29, 2014

GanttProject 2.6.6

GanttProject 2.6.6 fixes a few annoying issues and provides compatibility with Java 7 on Mac OSX

It turned out that application launcher which was built into was not aware of Java 7 and insisted on installing Java 6. GanttProject 2.6.6 for Mac OSX is repackaged with other launcher, and we hope that it will work fine with both Java 6 and Java 7 from now on.

Bugfixes and translation updates:
  • Gantt chart rendering issues when some of the tasks are collapsed 
  • Timeline labels are saved to project file and survive project reopenings and application restarts
  • WebDAV locking functions made working
  • Mac OS X users can now move tasks on the chart with Shift+left button
  • Hungarian, Korean, Chinese, Polish and Norwegian translations update
  • Added Hungarian and Chile calendars
You can download GanttProject 2.6.6 from our web site or from our pages on SourceForge.

Wednesday, April 9, 2014

The first beta of new GanttProject 2.7

Meet the first beta build of the new major update. GanttProject 2.7 "Ostrava"is available for download from our web site and SourceForge.
Ostrava is the third largest city in Czech Republic. It is located in Moravian region in the north-east, close to Poland and Slovakia.
While this build should be fairly stable, it is possible that something is broken. We'll appreciate testing and bug reports, especially related to our new features.

Now, the headlines!

Task cost calculation

This is one of the most requested features in our bugtracker. What is implemented in GP 2.7 is really simple, but we hope that  many of you will find it useful. 

So, we've added Cost property to our tasks model and user interface. It sits in the Resources tab:

Cost fields in the Task Properties dialog

Cost can be calculated automatically, which is the default setting, or typed manually. When calculated automatically, it is a sum of payment rates of assigned resources, each multiplied by their utilization and task duration. Naturally, in the resource properties dialog one can specify payment rate for each resource. At the moment we support standard rate only, with no specific currency, per our default time unit which is day. So, if you assign 1 resource with standard rate 50 to a task with duration 5 days, its calculated cost will be 250. If you assign one more resource with standard rate 100 but 50% utilization, the total cost will be 250 + 250 = 500

The cost of a summary task is the sum of subtask costs, but can also be set manually.

Cost and standard rate can be shown as columns in task/resource tables, can be exported to PDF, HTML, CSV, and hopefully MS Project import/export is also aware of them. We would appreciate testing of MS Project interoperability in this aspect, though.
iCalendar in the list of import tools

Import holiday calendars in iCalendar format

GanttProject has been using holiday calendars in its own simple format for years, but we understand that it is not the most popular format in the world, and people normally would prefer to publish calendars in other formats. iCalendar is one of the most popular, and there are lots of calendars in this format available from Mozilla or iCalShare. Now you can import holiday calendars into GanttProject with our new import tool. It can import .ics files, so you'll need to download them or export from other tools, and although iCalendar format supports more than just holidays, GanttProject will import all events as holidays into current project's calendar.

Weekend exceptions

One more highly requested calendar-related feature is ability to make working some particular weekend day. For instance, in some countries, e.g. in Russia, if a holiday happens on Tuesday, it will be "merged" with the closest weekend, and Monday will be non-working too (thus we get 4 days looong weekend), but one of the next weekends will have one working day.

Such use case could not be represented in GanttProject previously. In GP 2.7 it is possible to add "exceptions" and make particular weekends working. This feature sits in the refactored Public Holidays dialog which is now way more functional.

Adding weekend exception

There are a few less important changes, library updates, and so on. There is one removal: FOP based PDF export, which was deprecated since GP 2.5, is not included into GanttProject 2.7.

Installation requirements

GanttProject 2.7 requires Java 7 or Java 8 and is available as ZIP archive only. You can run it on any Java-enabled platform (Windows, Mac OSX, Linux, etc.), provided that you can run java command from your terminal window. Please refer to installation instructions on our Wiki pages.


We expect that files created in the previous versions of GanttProject should work fine in GP 2.7, and that GanttProject 2.6 can read files created in GP 2.7, skipping data related to newly added features of course. Please let us know if you notice any compatibility problems.

Official download locations

Unfortunately Project Hosting on Google Code which we are using stopped its download service. You can download GanttProject 2.7 beta I from our web site or from our pages on SourceForge