Seesmik brings an efficient perspective to social networking on a mobile platform. An application which enables Twitter, Facebook and Ping.fm – letting you update dozens of social networks at once (including MySpace, Tumblr, LinkedIn, Flickr, Blogger, and many more!), Seesmic for iPhone gives you the ability to see your friends timeline, your mentions and private messages, update or delete statuses, post links, upload pictures, geotag your updates and access user profiles. You can organize your accounts, searches, lists and trending topics all in a customized dashboard and navigate easily through it.

Link: http://seesmic.com/seesmic_mobile/iphone/

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Google Buzz provides developers with a powerful set of API endpoints for searching, reading, and updating post content and metadata. This allows desktop, mobile, and web application developers to integrate with Buzz, and gives the user control of their own data so that they can freely share it with other sites and services as they see fit.

Link: http://code.google.com/apis/buzz/docs/

Working with the Buzz API

Important: By using the Google Buzz API, you agree to the Google Buzz API Terms of Service and agree to abide by the Google Buzz Developer Policies.

Getting Started

This document details the background knowledge that you need to use the Google Buzz API.

Developer’s Guide

This document provides step-by-step instructions on how to use the common features of the API. It focuses on RESTful calls that use HTTP verbs (such as GETand POST) in order to access JSON data structures. If you’re new to the API, the Developer’s Guide is probably the best place to start.

OACurl Cookbook

This document provides examples for working with the Buzz API using the OACurl command line utility. If you want to start playing with the Buzz API without writing any code, or to see example requests, the OACurl Cookbook is likely what you’re looking for.

[Source: http://code.google.com/apis/buzz/docs/]

TweetUp boosts the world’s best tweeters on any topic to the top of search results, raising them above the noise and giving them persistence against the backdrop of millions of tweets that fly by each minute. TweetUp has developed an algorithm that assesses the quality, relevance, and influence of tweets and tweeters, combined with a bid-based marketplace. This helps you find the best tweeters to follow, and if you’re a serious tweeter, it increases your visibility, attracting the most highly targeted followers.

Link: http://www.tweetup.com/

Description: Beautiful Google buzz integration to wordpress + 8 different admin panel options (Settings -> WP Google-buzz) + 5 diff button images +  Buzz Counter.

Automatically displays Google Buzz button for every post. Google Buzz is shaping up to be an interesting new way to share content with your Gmail friends, so why not have a button for sharing blog posts/pages to the service?Google has released new Google Buzz APIs and this plugin includes those official Google Buzz APIs. Try it now & enjoy. `Happy buzzing!`

Link: http://bit.ly/dbi7Xe

Features:

1. Show Google-buzz button before/after post content.
2. Now with Counter Option. 
3. TOP, RIGHT, LEFT, BOTTOM margin options
4. Manual insertion of code: Use this: <?php if(function_exists(‘add_wp_google_buzz’)) { add_wp_google_buzz(); } ?>
5. 14 different beautiful image options (All Google Buzz Button images are now transparent)
6. rel=”nofollow” option for buzz links
7. Show/Hide option to show Google Buzz button on Pages(page.php), Home(index.php) and Archive(archive.php)
8. float:left and float:right stylesheet option
9. NEW: popup window option