Pinder is a Python client library for Campfire, the chat application from 37Signals. Campfire utilizes vanilla XML/JSON over HTTP and returns Account, Rooms, Search, Messages and more. Campfire is like instant messaging, but designed exclusively for groups and allows you to save transcripts, share text, files, and code in real time.
Free blogging service Posterous is simple to use, but posts several types of content via e-mail or web: video, audio, pictures, and documents. For some users, though, they might prefer more enhancements to the interface, or a mobile app. For them, and the developers that cater to them, there's the newly updated Posterous API. A complete replacement and rewrite to the previous version, this allows a lot more access to developers, including administrative options like adding sites and users.
There are many ways for websites to tap into online social networking services to allow their users to connect with each other. Now, for publishers who want to add social network functions to already existing websites, Yahoo! has announced their new Updates API, a web service that provides permission-based access to the actions of any user with a Yahoo! account. As part of Yahoo!'s Open Strategy (Y!OS), this API essentially allows developers to treat the Yahoo! network as a social networking platform (for more on Y!OS see our coverage of the initial Y!OS announcement and their YQL launch).
Livefyre has just launched StreamHub, a new set of tools for Enterprise customers that builds upon the Livefyre core real-time comment platform and the Livefyre API. StreamHub curates the social web and allows publishers, television networks and brands to incorporate relevant discussions via social media into their websites.