Software Masterpiece

A SoftwareMasterpiece is just that. As in art, architecture, whatever, the main criterion is to withstand the test of time. In a field that is only a little more than half a century old (give or take a decade, and not counting Babbage), can we truly say that anything to date qualifies?
There seems to be some disagreement over the definition of SoftwareMasterpiece; see SoftwareMasterpieceCriteriaDiscussion. I (Anonymous) propose factoring this page into three separate pages as follows, in the hope of clearing up the confusion.
SoftwareMasterpiece(s): You can vote on these. Add new ones only if you've dealt with their source. See also ProgramsToRead

I don't think we should talk about external properties of the programs, because they exist independently of the programs. I think we should talk about the beauty, cleanness, design and buglessness of the source. I refactored away everything that talks about ideas, not actual pieces of software, because things that are not software are discussed in more detail elsewhere and cannot be software masterpieces.
Vote exclusion of SchemeLanguage (I added LispLanguage above). What makes Scheme a masterpiece? Seeing as it's basically just another LISP... Some new stuff, some changes, sure, but does that make a SoftwareMasterpiece innovation compared to the original (JohnMcCarthy) LISP? Granted I haven't read any Scheme source, but ''would an improved version of a Picasso, no matter how much "improved", ever count as a masterpiece?'' I think not. -- SimonBrenner

IMHO, UnixOs ranks as a SoftwareMasterpiece. It has inspired so many and it refuses to die or even become obsolete. -- JavaSchrod TheUnixHatersHandbook tells you otherwise. I'm a long time Unix user, but I think their criticism hits the point. -- PanuKalliokoski It's a funny book, with lots of on-target criticism, but they're all about (highly annoying) side issues, not about Unix per se. The things that make Unix a SoftwareMasterpiece are unrelated to the complaints in that book. -- DougMerritt ----

TetrisGame. The game concept has been ported (to almost everything - including buildings! ) and cloned more times than you can count (look out for the cheap LCD copies in every toyshop), and has spawned innumerable variants, if not an entire genre of games. I'd say it's a SoftwareMasterpiece if only for the fact that I've been playing it since 1991, and I still enjoy every single game. --EarleMartin

If "time" was the test, then surely FortranLanguage and CobolLanguage belong on this list too. -- BillZimmerly Which implementation? How about SmallTalk?

Smalltalk-80 sure was one. As was Xerox's InterLisp-D environment.

Functionality, utility, and art are not particularly the same things. These terms shouldn't be loosely thrown around. Just because software is long lived and useful does not mean it is a masterpiece.
There are two definitions that I use regularly in my own thoughts. A masterpiece is either the best thing you have ever done, or (more importantly) the specific piece of work that proves you are a master. Perhaps this would be more of a "MasterWork?" :), with the distinction being important only to me.

Being a "master", to my mind, is when your peers consider you to be a master, preferably when they judge you based on your work. -- JeffBay
So, what qualifies EmacsEditor as a masterpiece?

It has withstood the test of time, and it has proven itself to be quite extensible, to say the least.

What do you think of the MathematicaPackage? Isn't it a masterpiece?

Not if you use MaximaPackage. --Anonymous

Maxima isn't a masterpiece. Just look at its source code.

''Mathematica isn't a masterpiece either, just look at the source code... you can't? oh, never mind then.'' What about the MathematicaLanguage?

One candidate is sendmail. Ignore the horrible syntax -- the program handled and continues to handle a huge stream of email every day. Possibly more than any other mail transfer agent. One of the earliest widely-used parts of ArpaNet? (later the Internet), email may be said to be the foundation upon which remote collaboration was built, and sendmail can be credited for being the software that made it happen. It deserves recognition for its longevity and power. --StevenNewton Sorry, please not sendmail. See chapter 4 of the TheUnixHatersHandbook, or at least the small part of it that discusses the sendmail program itself and not the major portions that discuss all sorts of other mail-related software behaving badly, but not having anything to do with sendmail other than trying to lay blame there because sendmail is the ubiquitous MTA on the Internet and just about every mail message with a problem somewhere will have touched a sendmail daemon. ''It may not be beautiful, but it enabled email to grow to the prominence it has today, and it continues to handle massive volumes of messages (Sadly, most of them are spam). So what are the criteria? Can we call something a masterpiece because of its place in the genre? Would the Model T be a masterpiece? Why not?'' Because popularity doesn't equal masterpiece. Being a masterpiece is about aesthetics, it's about beauty, it's about elegance and simplicity. If it isn't beautiful, it isn't a masterpiece no matter what it accomplished. A masterpiece should inspire the viewer, it should make you want to do something just like that, it should serve as a model of perfection or near perfection. Windows dominates the computer OS market, no competitor is even close, but it isn't a masterpiece of OS design. Masterpiece's aren't always the winner, or the most popular, WorseIsBetter for the masses. But the masterpieces inspire and influence future designs far more than reqular stuff. As a language, Lisp is a masterpiece, and you can see that by how many of it's features have made it into other languages over the years. Most languages are still in the process of reinventing Lisp. I'd say SmallTalk is a masterpiece for the same reason. No, not sendmail. But the QmailSystem is a masterpiece. sendmail works, but qmail not only works better, it is beautiful. -- RalphJohnson

IMNSHO, sendmail is the #1 example of a program that is very far from being software masterpiece. BIND is another high candidate. Qmail might be a software masterpiece in reliability (I don't know), but not usability - its configuration and weird magical e-mail addresses (or were those from ezmlm?) are a hairy ball.

sendmail is an anti-masterpiece in that it inspired me to write my own mail server because that would be easier (it proved to be *much* easier, in fact) than getting sendmail to work correctly for a very typical network. So, it inspired, but not in the way a masterpiece should.

Software Masterpiece: A program in the developer's mind before the first line of code is written (It goes down hill from there). ''Just wanted to say that the above definition of a Software Masterpiece is a masterpiece in itself. You really nailed it, in a very deep way. Sorry for the interruption, back to your regular programming.'' ---- Someone placed RubyLanguage on the list. I'd disagree on the grounds that it's too young and perhaps unproven to merit being considered a masterpiece. Perhaps when they're on version 10? Ruby was created on February 24, 1993, according to WikiPedia, making it over 10 years old now. Is that too young? Compared to something like Emacs, yes. Any language that breaks itself between updates and flip-flops between syntactic systems from minor version to minor version is absolutely not a candidate for inclusion in a list of software masterpieces. Inclusion of Ruby is laughable. I don't see Perl up there and its got a far more glorious and storied history than Ruby. I don't know that Python belongs, either, though perhaps its successful and consistent use of limited syntax is worthy of honorable mention (and perhaps some CPython implementation bits are themselves masterpieces, but this does not extend to the entire project).
Some possibilities in various genre:

The deepest meaning of this page is that there is little agreement on which software are masterpieces, perhaps because as a field software engineers/programmers pay little respect to learning from the past. LiterateProgramming would encourage us to read good programs like books. But which good programs are these? As a profession we need clarify what our 'scriptures' are. -- RobinChauhan?

I would say PostScript probably fits the bill. I haven't really read the source code of any implementations, but it works so well that you generally don't see that it's there. I'd say that's a good indication of mastery.

ColorForth is a masterpiece. It embodies ChuckMoore's decades of experience in refining the ForthValues of minimalist design. Reading it is like seeing an Aikido master effortlessly deflect half a dozen attackers; what Chuck achieves seems impossible in the tiny amount of code involved.
I believe LuaLanguage qualifies because it is a very compact implementation of a simple and elegant language, written in a very portable style of C. Not only is it production quality, shipping in many products, but it is an exemplar learning tool. It has a one pass parse that directly emits the IL, a unique implementation of closures using a technique called upvalues, and several other innovative features. The authors are also very open about explaining and documenting their work. It's a real contribution to the art.

GNU ScreenMultiplexor is definitely a masterpiece in usefulness. It is simple, easy to learn and allows lots of activities otherwise impossible over an SSH link (or in a console that gets interrupted when quitting and restarting X11). I haven't had a look at the source though.
I'd vote in DirMagic? (the DOS utility that is still better/faster than windows explorer) and several of the TSR's I used to use. What about the original Norton DOS defrag? or PartitionMagic? Those were so useful and powerful they were revolutions.

SQLite. Most widely deployed sql database engine in the world. As powerful as other database engines ten times the size. Clean, nicely-commented sourcecode.

Colorforth: I want to believe. But I couldn't find any help or documentation. When I tried it, it just gave me a place to type. Clueless, I tried typing random characters...and it crashed. Tried again, same. How do I grok the colorforth? First, become familiar with ForthLanguage (e.g., via GForth) so you have some understanding of Forth to start off with. ColorForth assumes you grok Forth first. Then, basically, read the source. As indicated above, ColorForth is a very, very minimalist system. It is essentially an interactive assembly language for a hypothetical dual-stack virtual machine that maps very closely to real hardware; unlike GForth, ColorForth imposes no protections for you (otherwise, it's not minimal!), so yes, you can crash the system trivially if you don't know what you're doing with it. --SamuelFalvo?

XMMS - less bugs than anything I know, spectacularly clean code, useful comments, lightweight, and handy.
If you've got VMS there, you should consider Plan 9 as well. Very elegant design and a clean way to solve many problems. 9P is a fabulous idea which spawned FUSE. The C source code is also well written and available for reading.
I elect SmlLanguage, as per The Definition of Standard ML. Or would this be more of a SpecificationMasterpiece?

I (NatPryce) suggest the GitVersionControl. The command-line tools are clunky but the model underlying them is a beautiful example of elegant simplicity.

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