OpenSSL and/or libeay and derivatives. On every device which does any type of SSL/TLS/encryption/hash functions from pocket calculators, control systems, phones, mini-computers, mainframes, satellites (as in orbiting the earth), submarines, and on and on ... Another candidate is the original CERN web browser HTTP libraries (or their derivatives) which are used by every web browser in existance (or no longer in existance), and almost anything which uses "webby" protocols (such as http).
> -----Original Message----- > From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-users- > bounces at mailinglists.sqlite.org] On Behalf Of Eric Sink > Sent: Sunday, 3 May, 2015 12:27 > To: General Discussion of SQLite Database > Subject: Re: [sqlite] What software is deployed more than SQLite? > > Last time I asked myself this question, I ended up in the same place you > did: zlib, libpng and libjpeg may be the only candidates in the same > ballpark as SQLite. > > See also: > > https://news.ycombinator.com/item?id=4616740 > > -- > E > > > On Sun, May 3, 2015 at 1:18 PM, Richard Hipp <drh at sqlite.org> wrote: > > > I'm trying to update the "Most Deployed Database" page > > (https://www.sqlite.org/mostdeployed.html) in the SQLite documentation > > (which has not been touched in close to a decade) and I began to > > wonder what other software libraries (database or otherwise) might be > > deployed more than SQLite. SQLite is in a lot of things. My > > conjecture is that SQLite is in the top-10 most deployed software > > components in the world today. Check my work, please. SQLite is in: > > > > * Every Android phone and device > > * Every iPhone and iOS device > > * Every Mac within the past 10 years > > * Every Firefox, Chrome, or Safari browser > > * Every copy of Skype > > * Every copy of iTunes > > * Most Python and PHP installations > > * Every Dropbox client > > * Every TurboTax and QuickBooks > > > > And more. But just from the list above, there are not too many > > computing devices that omit SQLite. I'm wonder what other software > > components have a greater reach? > > > > The original Jean-loup Gailly and Mark Adler implementation of the > > zlib compression library might be deployed more. Anything else? > > > > What about libjpeg and libpng? I think there might be multiple > > independent implementations of libjpeg in circulation, but I am > > unclear on that point - perhaps a reader more knowledgable about this > > can correct me. What about libpng? Is there just the one original > > libpng library used everywhere, or are there competing > > implementations? > > > > There appear to be more deployments of SQLite than there are of Linux, > > since SQLite is on every Android device, and Android represents the > > bulk of Linux deployments. SQLite is also on most Linux desktops by > > virtue of being included with Firefox and Chrome. And it is on many > > Linux servers by virtue of being included in Python and PHP. Some > > fraction of Linux machines may omit SQLite, but that fraction seems > > far smaller than (say) the number of iPhones that include SQLite, so > > SQLite still comes out numerically superior. > > > > There appear to be more deployments of SQLite than all Apple-built > > computing devices, since SQLite seems to be in all Apple products and > > SQLite is in many other products as well. > > > > SQLite is not in default Windows installations (historically - that is > > about to change with Windows 10 which uses SQLite as a core OS > > component) but many Windows desktops will include secondary software > > such as Firefox or Chrome or iTunes or Skype or Dropbox or something > > else that contains SQLite. So perhaps most Windows desktops contain > > at least one copy of SQLite. And in any event, I hear that the total > > number of smartphones now exceeds the total number of desktops (of any > > type, Windows or otherwise) and SQLite is in all of the smartphones. > > > > There are multiple competing implementation of libc, and (unless I am > > mistaken) Android and MacOS/iOS use completely independent libc > > implementations. You could argue that various implementations of libc > > are collectively more widely deployed than SQLite. But there is only > > one implementation of SQLite, so if we talk about single > > implementations rather than competing implementations of the same > > interface, then SQLite seems to still come out on top. > > > > What am I overlooking? Would it be overly brash to claim that SQLite > > is the second most widely deployed software component in the world > > today, after the Gailly/Adler zlib implementation? Or maybe the > > third-most after zlib and libpng? > > > > Any input you can provide is appreciated! > > -- > > D. Richard Hipp > > drh at sqlite.org > > _______________________________________________ > > sqlite-users mailing list > > sqlite-users at mailinglists.sqlite.org > > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > > > _______________________________________________ > sqlite-users mailing list > sqlite-users at mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
