Best Online Apps to share content with friends

Free

Facebook is the world's largest social network platform.

Open Source

Diaspora is a nonprofit, user-owned, distributed social network that is based upon the free Diaspora software.

Freemium

Known is a publishing platform that allows its users to share their stories online.

Open Source

Hubzilla is a powerful platform for creating interconnected websites featuring a decentralized identity, communications, and permissions framework.

Free

Google Plus is a content focused social network social network from Google.

Open Source

Minds is an open source social networking service.

Open Source

identi.ca is a free and open source social networking and micro-blogging service based on the pump.io software, using the Activity Streams protocol.

Find apps to do interesting things:

create and host a virtual machine in cloud

Backup files online

Read and manage RSS Feeds.

Decompress or extract compressed archive files.

Find apps and software applications that interests you and needed by you.

Manage system resources including hard disk, memory, and CPU cycles