Open Source version & source code
Up-to-date source code of the Open Source version of Poedit (sans the Pro features included in the above binaries) is available at GitHub. Windows and OS X versions can only be built from a git checkout.
There's also a tarball of the latest release for Linux/Unix builds: poedit-1.6.4b.tar.gz
Older, no longer supported, versions, including a version that runs on OS X 10.6, are available from SourceForge archive.