diff -r 7ee70787a78e Doc/library/trace.rst
--- a/Doc/library/trace.rst	Mon Feb 06 09:23:02 2017 +0100
+++ b/Doc/library/trace.rst	Mon Feb 06 18:54:22 2017 +0100
@@ -13,6 +13,9 @@
 list functions executed during a program run.  It can be used in another program
 or from the command line.
 
+.. seealso:: `Coverage.py <https://coverage.readthedocs.io/>`_,
+   a third-party library for measuring code coverage of Python programs.
+
 .. _trace-cli:
 
 Command-Line Usage
@@ -204,4 +207,3 @@
    # make a report, placing output in the current directory
    r = tracer.results()
    r.write_results(show_missing=True, coverdir=".")
-