Afterstack is a tool, for the Stack Exchange Network sites, that provides: integrated searching, answer saving, refined results and profile based suggestions.
5 sites are supported: Stack Overflow, Super User, Ask Ubuntu, Ask
Different and Server Fault (more to be added soon).
Searching does not require a user profile, however, saving answers
and receiving personalized suggestions requires sign in by using
either a Github or a Google account. User registration is not
Only questions that have been answered are returned in the results.
The top 5 questions are returned by default per every search (more
options to be added soon)
The top 5 answers per question are visible
Each user profile can contain up to 50