Poplog, by Prof. _(Robin Popplestone), "<cite>.. is an integrated, interactive, multi-language software development environment, which used to be a commercial product but is now freely available, including system sources, under a liberal XFree86-style Open Source licence. The Poplog system provides incremental compilers for several powerful *(programming language)s:
_(POP-11), _(PROLOG), _(Common Lisp) and Standard _(ML).</cite>"

<ul class="links">
<li>_("Open Source Poplog" | http://www.poplog.org/)
<li>_("Free Versions Of Poplog"|ftp://ftp.cs.bham.ac.uk/pub/dist/poplog/freepoplog.html)</li>
<li>_("FAQ"|http://www.cs.bham.ac.uk/research/poplog/comp.lang.pop.faq.html),
_("FTP"|ftp://ftp.cs.bham.ac.uk/pub/dist/poplog/comp.lang.pop.faq.html) _("(text)"|ftp://ftp.cs.bham.ac.uk/pub/dist/poplog/comp.lang.pop.newsgroup)</li>
<li>_("The Early Development of POP"|http://www-robotics.cs.umass.edu/~pop/pop_development.html)</li>
<li>_("An Overview of Pop-11"|ftp://ftp.cs.bham.ac.uk/pub/dist/poplog/primer/START.html)</li>
<li>_("Poplog VM Instruction Set"|ftp://ftp.cs.bham.ac.uk/pub/dist/poplog/doc/popref/vmcode)</li>
<li>_("Pop-11 Book"|ftp://piglet.cs.umass.edu/pub/misc/popbook.ps.Z)</li>
<li>_("Poplog 15.0"|ftp://www.cogs.susx.ac.uk/pub/poplog/poplog15.0/)</li>
</ul>