Use the Vitalist API to get, add, edit, and delete all your actions, projects, contacts, and contexts. You can also get information and settings for your user account. David Allen's Getting Things Done (GTD) methodology is built in, so you can track your lists online in the GTD format with no extra work. Vitalist also has mobile capabilities for management of actions (to-do items in a list).
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.