NewBlue has 9 filter sets and one of them, Video Essentials, is for Adobe After Effects 7.0 and higher. NewBlue Video Essentials features a set of 10 video effects: Color Fixer Plus, Crop Borders, Detail Enhancer, Flash Remover, Pixelator, Sharpen, Soft Focus, Tint, Touch Up, and Video Tuneup.
It's unclear how essential this package is for AE users, though inside NLEs that might be different. Oddly, NewBlue notes that Adobe products are currently for Windows only, and Adobe After Effects and Apple Motion are not compatible with transition packages.
Earlier this year NewBlue offered its Cartoonr filters for free, and it's still free.