1. Synfig Studio
Synfig Studio is a free and open-source 2D animation software, designed
as powerful industrial-strength solution for creating film-quality
animation using a vector and bitmap artwork. It eliminates the need to
create animation frame-by frame, allowing you to produce 2D animation of
a higher quality with fewer people and resources. Synfig Studio is
available for Windows, Linux and MacOS X.
2. QGifer
QGifer is a tool for extracting part of a video to an animated GIF file. The new demonstration video : http://youtu.be/SNTf5eNdL4Q
3. Animbar
Animbar generates output for an animation technique known under names such as picket fence animation, barrier grid animation or other trademarked names.
4. DeleD Community Edition
DeleD is a 3D modeler and level-editor combined into one. It focuses at game development and is specifically designed to create static scenes. Related project at https://sourceforge.net/projects/deled-plugins/, featuring DeleD plugins. A Lazarus port is available in the repository as well. Check out the official DeleD website at http://www.delgine.com for more info, updates and more.
5. VirtualDub APNG Mod
VirtualDub APNG Mod is created to provide Animated PNG support for the popular video editing software VirtualDub. Export module is designed to compress the output files as much as possible. Internal input driver can load APNG files, for more editing.