LEPL is a recursive descent parser library written in Python. It is based on parser combinator libraries popular in functional programming, but also exploits Python language features. Operators provide a friendly syntax, and the consistent use of generators supports full backtracking and resource management. Backtracking implies that a wide variety of grammars are supported; appropriate memoisation ensures that even left-recursive grammars terminate.
HarvestMan is a multithreaded off-line browser.It has many features for customizing offline browsing through URL filters, word filters, domain filters, URL priorities, depth-fetching, fetch levels, file limits, time limits, robot exclusion protocols, and many more. It is useful to download an entire Web site or certain files from a Web site to the hard disk for offline browsing later. It supports HTTP/HTTPS and FTP protocols and can work across proxies.
PyORBit is a Python binding for the ORBit2 CORBA ORB. It was developped to suit the needs of the bonobo bindings in GNOME-Python, but is usable for other purposes as well. It aims to follow the standard Python language mapping for CORBA. It can generate stubs at runtime from typelibs, IDL files, or by introspecting remote objects using ORBit2's IModule typelib capabilities.