ProjectInfo Effect :- ProjectInfo Effect allows the user to view all the Project settings and media metadata in a single viewer. To use it, download exiftool and save in a convenient location on your hdd.
Importer Effect :- Importer Effect provides the ability to import certain unsupported file formats. Unsupported formats include SVG, PPM, PGM, PBM, XBM, XPM and HTML. JPEG, GIF, PNG and BMP support is included in order to support quick operations on these files.
Matte Effect :- Matte Effect is a free effect that creates a boolean bitmap. Certain effects require the usage of a hidden layer as a matte. Matte selection controls are common to such effects.
FFRender Free Effect :- FFRender Free allows the user to render 8-bit H.264 at the layer level using an external FFMpeg installation. All known AE renderers render at the level of a composition. FFRender Effect provides more options and costs 20$.