A feature in Visual Studio Team Studio that was immediately appealing to me was shelving. The goal of this tool is replicate that general functionality in Perforce.
Project homepage:
http://code.google.com/p/p4shelf/
Programming language(s): C#,C++,Python
License: gpl2
Some source files from: p4shelf/IronPython/Src/Tests/compat
common.py
rulediff.py
runsbs.py
sbs_builtin.py
sbs_class_compare.py
sbs_exceptions.py
sbs_parse_string.py
sbs_simple_compare.py
sbs_simple_ops.py
sbs_true_division.py
sbs_typeop.py
testdata.py
See more files for this project here