We’ve got more presenting companies to announce for our March 23rd Under The Radar: Office 2.0 Conference and today we’ll give you a peek into what all the buzz is all about. We’ve added even more compelling startups in the Office 2.0 sector and they’ve all got one thing in common: innovation!

Let’s get down to business, so to speak… Building an SMB takes tools and know-how, anything that frees staff from tedious tasks is going to increase productivity. For a business that collects fees of any kind – My Payment Network will take the headache out of banking, by providing an easy-to-use (and cheap) system for processing payments by check and credit card. No merchant account needed.

Keeping everyone on the same page is another BIG problem that a bunch of our companies are trying to solve. For calendaring we have Calgoo, which adds a ton of function to your Google calendar (and makes it much easier to look at!) and Tungle, a tool that helps people schedule meetings across applications and platforms. Another truly impressive syncing tool comes from InvisbleCRM, allowing a full host of syncing features between Outlook and Salesforce. We were blown away by their presentation at the last App Exchange Conference in SF, we see a big future for this company.

Handling document tracking and change approvals most often leads us downhill, deep into a pit of email overload. Not so if you use Approver, it stores your docs, remembers changes and lets others comment – notifying the author anytime something needs attention. Simple, but clever. Groups that need to collaborate also end up in email hell – but wikis can save the day (and your sanity). BrainKeeper gives users workspaces to manage project collaboration, attachments are indexed and searchable, with version control and change alerts via RSS. SystemOne is a knowledge management dream, as information goes into the system an intuitive search finds everything in the network (and on the web!) that matches new topics. No more rendundant documents and no more wasted web search.

Speaking of web search – what is the group benefit of tagging and bookmarking if you can’t share your resources with everyone you work with? And what good is sharing if you can’t control who you are sharing with? Connectbeam brings these tools together and adds enterprise level functionality (i.e archiving, security, controlled access). And how do find the topical experts in your company? You could ask around or you could use Cogenz. Using bookmarks and tags to generate ‘reporting’ allows users to find each other and connect on research and exploration. Sounds complex? Nope, think del.icio.us for the enterprise, with a better grasp on collecting intelligence.

And last but not least – we call this group the MashApps – leveraging API accessibility and flexibility is going to truly change the way we use the web. Mashery has it’s eye on creating an API marketplace, a brilliant idea that truly advances the cause. By managing API release on behalf of the companies who create them (for a fee, of course) Mashery implements control and access to developer know-how. Proto brings mashups to the desktop, custom business apps (like an email reply aggregator) can be built using drag and drop assembly. It uses Visual basic and Flash to get the job done, no programming skillz required. Longjump is a CRM that optimizes customization by offering custom plug-ins and apps that can be built by users or by developers hoping to market their products (all rated by actual users) through the Longjump market interface.

You won’t want to miss this Under The Radar, you can register now and reserve your space. Our previous Office 2.0 events have been packed full and sold out early, the topic is clearly dominating the Web 2.0 world.