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For this module you'll need a Facebook graph SDK v5.5
This module very easy to use.
1) Download facebook SDK v5.5
2) unzip it to folder "sites/all/libraries/php-graph-sdk-5.5"
3) Install and activate module in admin page
4) Go to module config page and fill fields : Facebook App ID, Facebook App secret, Your Facebook token for this facebook app, choose content type and check publish checkbox
5) Create content and you content body will post to facebook

Workflow State Configuration
- Workflow State Config is a module for the configuration of workflow state as "Publish" and "Default Revision".
- Module is required by "Workflow Moderation" to managing the node revisions.

Configuration Details

• Published - When content reaches this state it should be published.
• DefaultRevision - When content reaches this state it should be made the
  default revision; this is implied for published states.

Module Dependency
- Workflow

This module let you add floating social sharebar on your website. By default you will find following sharebar.

• Linkedin
• Google+
• Twitter
• Facebook
• Email

INSTALLATION:

After installation navigate to admin/config/sharebar/sharebarsettings
Configure settings as per your requirements.
Here you can even add more sharebar button..

Now navigate to admin/structure/block
Put social sharebar block in content area and configure block as per your requirements.

This module provide the video slider for drupal 7.

Note: Development and issues are handled on GitHub, and code is synced back to Drupal.org

This module provides support to setup a platform supporting multiple (sub)sites
based on Organic groups (OG) functionality.

• Define what node types should be used as Site's.
• Simplified OG API by providing OG function wrappers.

NOTE: Site entities are limited to node entities.

This Organic Groups based module , provides users the ability to accept or denied the request of group admin. So by using this module owner or manager of the group can't add users directly , first a request will go to users , then they accept or reject according their wish.