In closing, Kaiser echoed the gripes commonly expressed by anyone who has maintained a popular open-source project, bemoaning the burdens imposed by unhelpful users and bug reports. While Kaiser didn't discount the possibility of future releases, the project has reverted to 'hobby' status. The final release contains minor changes to the browser's layout engine, and contains a fix to the JavaScript engine that addresses an unspecified problem that creeps in when performing high-precision mathematical operations. 'There is also the matter of several major security issues with it that I have been unable to resolve without seriously gutting the browser. 'The Web moves faster than a solo developer and the TLS apocalypse has rendered all old browsers equal by simply chopping everyone's legs off at once,' he wrote. This, he said, was due to 'the sheer enormity of the work necessary to bring it up to modern standards.' Classila's development has been far slower than TenFourFox's, with the last release in 2014. Kaiser also used the opportunity to call time on Classila, a 'vaguely modern' fork of Mozilla for older Macintosh computers running Mac OS 8.6 and 9. Eventually, the dream of browsing on a PowerPC Mac will die. You can make workarounds to gracefully degrade where we have missing HTML or DOM features, but JavaScript is pretty much run or don't, and more and more sites just plain collapse if any portion of it doesn't.' For better or for worse, web browsers' primary role is no longer to view documents it is to view applications that, by sheer coincidence, sometimes resemble documents. 'However, JavaScript is what probably killed TenFourFox quickest. 'Writing and maintaining a browser engine is fricking hard and everything moves far too quickly for a single developer now,' Kaiser said. Adding modern JavaScript features, like await and async, would require major changes to the underlying JavaScript engine, adding further complexity. With no Rust compiler for 32-bit PowerPC platforms, creating builds beyond FireFox 54 is a near-impossibility.

And there are insurmountable hurdles that come with building a modern browser for computers that predate 2005.

What pcs run firefox os x