carloborja - 5:48 am on Jul 11, 2013 (gmt 0) [edited by: httpwebwitch at 12:31 pm (utc) on Jul 15, 2013]
These are not exactly websites but it may come close to what you are looking for.
Here is a list of social media management and monitoring software:
It compares over 25 tools complete with features and pricing. (Hootsuite, as mentioned above is one of them).
[edit reason] substitute personal URL [/edit]
[edited by: httpwebwitch at 12:31 pm (utc) on Jul 15, 2013]