MacResearch, which I think is a great site for the Mac using Scientist, has pondered the question of why there hasn’t been a boom in Scientific Software exclusively for the Mac. The assumption is that because the Mac has free developer tools; a great application development interface (API) in Cocoa; and easy to use scripting languages like AppleScript, that it should only be a matter of time before a number of ‘killer’ scientific apps appear.
As a Mac-using Scientist and Developer, I am quite well credentialed to offer some insight into this. In my day job, I help develop the commercial cross-platform Quantum Chemistry softwareADF, and in my spare time I develop and sell a financial-modeling app — written in Cocoa — called Trade Strategist. I also do most of my Scientific Research on the Mac, with the free Xcode tools referred to in the MacResearch article.
There are two ways in which a Scientific App could become publicly available: The first is via a company, and the second is via a Scientist. But the Mac market is relatively small, and the market for scientific Mac users even smaller. There really is not enough money in it to support a company developing exclusively for the Mac. In fact, there really isn’t enough money in Scientific Software to afford the luxury of any platform exclusivity whatsoever. Most companies I know support multiple platforms to make ends meet.
So if we assume that a company must develop cross-platform Scientific Software, it is pretty clear why there are not many company-developed apps written in Cocoa — Cocoa is a proprietary technology only supported on Mac OS X. As wonderful as it is, it is not an option for most companies, that end up choosing cross platform solutions like Qt and Tcl/Tk.
With companies out of the running, why aren’t there more software packages coming from the Scientists themselves? Ultimately, it again comes back to money, or at least time (which equals money). Even with a great API like Cocoa, developing good software is quite a time-consuming process. To get to first base is actually quite easy: You can throw together a prototype or version of your software with limited-functionality in a few days or weeks. The problem is taking the next step of turning that unpolished rock into something desirable to others.
Writing documentation, thorough testing, generalizing the functionality, improving the user interface; it all takes a lot of time. And its time the average Scientist doesn’t have to spend on such frivolous activities. Publish or perish, man! That great user interface won’t result in any new publications, so just take the ugly but functional version of the app that you already have, use it to generate your own scientific results, and leave the swarming masses to their own devices.
I am actually talking from experience here, because I once had stars in my eyes, and a piece of software that I thought could revolutionize the Scientific World: Dynasity. Dynasity is a Cocoa visualization app. I like to think of it as a visual multi-track recording studio. You create different visual tracks, and follow them in time. Dynasity also leverages QuickTime, making it possible to capture movies and stills with the click of a button.
So where is Dynasity? Where can you download it? Well, you can’t really. Dynasity is developed and used internally in my research group, but it has never been released to the public. The time required to generalize the software for a mass audience, and the problems of supporting it thereafter, make it undesirable. And any potential sales would hardly compensate the investment of time demanded. (If you are really intrigued about Dynasity, you can download it here. Note that this is not an official release, and comes with no promise of support or any warranty whatsoever.)
There are Scientific Apps available on the Mac, but they are often a bit underdone, for the reasons given above, and could hardly be classified as ‘killer apps’. There are exceptions though: As MacResearch mentioned in their piece, Mek&Tosj — fellow inhabitants of Amsterdam — write some great Cocoa software for Molecular Biologists. DataTank is also a Mac-exclusive that I like a lot; it is a visualization app like Dynasity, but much further developed.
One thing you could be forgiven for thinking from all of this is that the Mac is not much good to the Scientific Developer. Nothing could be further from the truth. I do most of my development work, from legacy Fortran to advanced C++ and Python scripting, with Apple’s free tools on a Mac. Xcode is great, and if you add to that Xgrid, gcc, and scripting languages like Python, Perl, Ruby, and Tcl, you have a winning combination. I also regularly use TextMate, an editor gaining favor with developers, and exclusive to the Mac.
In conclusion, the Mac is an insanely-great Scientific Platform, but don’t hold your breath for Mac-exclusives in the Scientific Realm. There simply isn’t the market for the big boys, and most scientists have better things to do with their time than writing help pages and answering questions of the form “I haven’t looked at the help pages yet, but can you tell me how to … ?”.