[7]

psgix.io
psgix.input.buffered
psgix.harakiri
psgix.harakiri.commit
psgix.logger
psgix.cleanup
psgix.cleanup.handlers
psgix.exit_guard

[1] PSGI::Extensions - PSGI extentions - metacpan.org (2012-03-10 01:48:20 +09:00 版) https://metacpan.org/module/PSGI::Extensions

[2] psgi-specs/PSGI.pod at master · miyagawa/psgi-specs (2012-05-31 16:50:29 +09:00 版) https://github.com/miyagawa/psgi-specs/blob/master/PSGI.pod

[3] Feersum - search.cpan.org ( (2014-10-21 03:49:05 +09:00 版)) http://search.cpan.org/dist/Feersum/lib/Feersum.pm#PSGI_extensions

[4] Twiggy::Prefork をリリースしました - blog.nomadscafe.jp ( (2014-10-14 16:12:59 +09:00 版)) http://blog.nomadscafe.jp/2012/05/twiggyprefork.html

[5] Twiggy::Prefork - search.cpan.org ( (2014-10-21 04:00:27 +09:00 版)) http://search.cpan.org/dist/Twiggy-Prefork/lib/Twiggy/Prefork.pm#PSGI_extensions

[6] psgi-specs/Extensions.pod at master · plack/psgi-specs (2017-06-07 14:24:45 +09:00) https://github.com/plack/psgi-specs/blob/master/PSGI/Extensions.pod