CAT was designed to utilize keystrokes rather than the mouse as a coding assistant. CAT can import an ATLAS.ti project to parse quantitatively, though it has a coding mechanism built into itself as well. CAT won the Best Research Software award from the Information Technology & Politics in the American Political Science Association in 2008. CAT is Web based.
Dedoose is a web based CAQDAS application. Features include intuitive user interface, visualizations of your data, tracking of data usage throughout project, as well as high level coding tree structure. Web based, not platform specific. Dedoose is one of the less expensive options, since you can subscribe monthly instead of paying an annual fee. Pricing information for Dedoose.