Pencil is an animation/drawing software for Mac OS X and Windows. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics. Pencil is free and open source.
Full Specifications
What's new in version 0.4.4b
General
ReleaseApril 6, 2011
Date AddedApril 6, 2011
Version0.4.4b
Operating Systems
Operating SystemsWindows 2003, Windows 2000, Windows Vista, Windows 98, Windows Me, Windows, Windows NT, Windows 7, Windows XP