There are three rather critical pieces of software still being kept alive for 
PPC:

Tenfourfox: http://www.floodgap.com/software/tenfourfox/ 
<http://www.floodgap.com/software/tenfourfox/>  (Firefox)

Tenfourbird: http://tenfourbird.osdn.jp/ <http://tenfourbird.osdn.jp/> 
(Thunderbird)

LibreOffice: http://ftp.osuosl.org/pub/manulix/other/libreoffice/ 
<http://ftp.osuosl.org/pub/manulix/other/libreoffice/> (LibreOffice 5.1 alpha, 
needs OS X10.5 Leo)

Fortunately a number of Macports packages are (still) working on PPC, notably 
the cli stuff tende to last longer (gcc 4.6 being essential for me). And there 
is still a reasonably current version of Emacs. 

The point being that PPC Macs are still useful machines that should not be 
condemned to the landfill…

Uli

> On Nov 12, 2015, at 3:31 PM, Michael David Crawford <mdcrawf...@gmail.com> 
> wrote:
> 
> The PowerPC/Tiger backport of FireFox that I installed on Mom's G4 is
> called "TenFourFox".  I think there's also a "TenThreeFox".
> 
> There are quite a few Classic programs that are actively maintained.
> 
> From time to time I get email from a user of Working Software's
> products, none of which ever ran on OS X, to ask me if I could
> re-release them.  I expect I could earn quite a good income doing
> nothing other than selling QuickLetter, which was written largely in
> 68k assembly code and never even ported to PowerPC.
> 
> (It was built on the same CoreEdit as MacWrite was.)
> Michael David Crawford, Baritone
> mdcrawf...@gmail.com
> 
>      One Must Not Trifle With Wizards For It Makes Us Soggy And Hard To Light.
> 
> 
> On Thu, Nov 12, 2015 at 9:13 AM, Ryan Schmidt <ryandes...@macports.org> wrote:
>> On Nov 12, 2015, at 10:58 AM, Michael David Crawford wrote:
>>> 
>>> On Thu, Nov 12, 2015 at 5:43 AM, Ryan Schmidt wrote:
>>>> 
>>>> On Nov 12, 2015, at 6:55 AM, Michael David Crawford wrote:
>>>> 
>>>>> There have been plenty of times that the only Mac available to me for
>>>>> development has been my mother's Tiger G4 iMac.  I was at least able
>>>>> to install a PowerPC backport of Firefox.
>>>>> 
>>>>> What was most upsetting to me when I used it was that I often had to
>>>>> build my own tools from source, because the powerpc binaries had been
>>>>> withdrawn.
>>>> 
>>>> Not sure if you were talking about MacPorts or other projects, but 
>>>> MacPorts has never offered PowerPC binaries. We started offering binaries 
>>>> with OS X 10.6, for x86_64 only.
>>> 
>>> Not MacPorts specifically but that has been my experience with
>>> numerous software packages.
>> 
>> In many cases, the software is no longer compatible with the older versions 
>> of OS X required for PowerPC machines, so they couldn't provide a binary if 
>> they wanted to because it won't compile anymore. Though there probably are 
>> other projects that would still work on PowerPC but binaries aren't provided 
>> because few people use PowerPC machines anymore. In any case, it's a matter 
>> you would have to take up with the particular project in question.
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