3rd Party Authentication is a wordpress plugin that allows wordpress to authenticate against other authentication systems.
Queue, Throttle, Send SMTP email through multiple providers. Automatic re-send when non-delivery received.
Live Chat by OggFlow is a customer support software and help desk suite (Web Analytics, CRM, Live Chat, Social Media, Ticketing). Your first user is
The 'Comments with OpenID' plugin allows to provide user details via OpenID service providers (Google, Yandex, LiveJournal etc.) while commenting.
Please use https://wordpress.org/plugins/storagemadeeasy-multicloud-files-backup/. This plugin is deprecated and no longer maintained.
Saksh WP SMTP can help us to integrate SMTP to your wordpress installation. So that you don't need to use mail() function.
The StorageMadeEasy Multi-Cloud File Download plug-in enables you to share files for download, via a widget, for over 30 cloud storage providers.
Use an SMTP server for sending email from your blog. Includes support for Gmail's SMTP.
Import users from vcard file format. Works with populair websites such as linkedin and gmail.
Mark posts, pages and custom posts in your WordPress admin; pretty similar to how stars in Gmail work.
Live Chat from your WordPress to your Google Talk/Hangouts and your Cell Phone. Never be away from your customers!
With this plugin you can login to wp-admin using your GMail credentials
Add Mashable.com like social share bar to your web site.
SMTP settings for WordPress and error logging.
Allow your visitors to invite their contacts from Yahoo!, GMail, AOL, Hotmail and other providers to your blog.
Simplified version of Sinoshare plugin with 40 sharing options. Increase social networking with your Chinese audience.
Back your WordPress blog up to any one of 40 storage clouds including S3, RackSpace Cloud Files, SkyDrive, DropBox, Gmail, Box.net, RackSpace Cloud Fi
Display stats from your email inbox.
Cool Social Counter for your Post.
Display all your unread mails from your GMail account. Only works over HTTPS !
Enable your users to comment by entering their name/email/website details via well known OpenID service providers like Google, Yahoo, Flickr etc.
A plugin that allows to create social icons with link in the webpage of your website
This plugin allows to share/search selected text of the site. Users can tweet,email,digg(+96 sites) selected text. Increases site usage and sharing
Chrome extension to display your Easy Digital Downloads customer information directly in Gmail
Unique Comment Notify appends the author's name to subject of notification e-mails.
RainmakerMoxie (BETA-limited support) is an interactive sidebar widget. Enter an email address and it displays a photo, name, social links and more.
Allow your users to sign in using Facebook, Twitter, Gmail, and 29 other services.
Invite friends on buddypress social network from MSN, gmail, Yahoo, facebook and twitter.
Let there be guides!
Configure a mail server you want to use for mailing in WordPress