Reppler
Unfortunately Reppler closed in November 2016. We're looking for another tool to recommend so stay tuned!
If This Then That (IFTTT)
IFTTT is a internet service that allows users to create chains of simple conditional statements, called "recipes", which are triggered based on changes to other web services such as Twitter and Facebook. An example recipe might consist of sending an e-mail message if the IFTTT user tweets using a certain hashtag. There are also Android and iOS apps that enable phone or tablet changes to trigger other activities. There is also a new companion app called 'Do' that can automate tasks on the press of a button.
You can use this to automate a lot of your social media management. For example, if you post something to Twitter, you can also get it posted to your Google+ and Facebook status. These kinds of recipes can save you a lot of time. IFTTT also integrates with productivity apps like calendars, Evernote and OneNote so you can trigger events based on activity on social networks.
Buffer
Buffer is a software application designed to manage social networks, by enabling you to schedule posts to social networks including Pinterest, Facebook and Twitter. With tools like Buffer, you can limit the need to login to your social networks by scheduling posts ahead of time.
Pocket
Pocket is a save-for-later service. Such services allow users to save interesting articles, videos and more from the web and other apps for later enjoyment. This means that when you see something you want to view or read later, you can save it into Pocket. This allows you to glance quickly through social networks, apps and websites and save items to read properly later.