The first TechStars company to launch, MadKast has raised a $300,000 series A round of financing from EONBusiness Venture Capital and several Angel investors in California and Colorado. Another TechStars company, EventVue, closed their own round of funding last week.

MadKast is an embeddable widget that lets you easily share links with your friends on any of 15 link sharing sites (Digg, Delicious, Reddit, …). But unlike other link-sharing widgets such as AddThis, MadKast also lets you send links via email, SMS, or IM. It’s a rather simple, yet useful, tool for letting your readers spread your posts.

Y Combinator wasn’t the only incubator to demo their most recent startups today. Colorado-based TechStars also brought their startups on stage - ten of them - to give the audience a first look at what they’ve been up to all summer. Each startup gave 5% of their equity in exchange for $15,000, operational support, office space and mentoring.

Most of these companies are unlaunched and seeking additional angel funding (exceptions are noted). Here are our notes on each - and see Don Dodge for his take:

EventVue builds social networks around conferences (see confabb, an existing competitor). The idea is to let people connect before, during and after conferences in an online space, to add to the physical interaction at the conference itself. The company plans on generating revenue by charging an affiliate fee for each new registration. They are currently looking for $150k in funding.

Intense Debate - see our previous coverage. Intense Debate is a souped-up blog commenting widget that adds a lot of features for publishers and commenters alike. Currently installed on 30 blogs. Installing the plug-in on your blog (WordPress, Blogger, and TypePad) adds threading, comment analytics, bulk comment moderation across all your blogs, user reputation, and comment aggregation. They are looking for $500k in funding.

socialthing! is an ambitious project that simplifies the management of digital content (blogs, photos, music, friends, social networks and links). Users can also synchronize information from and to various social networks from their profile page. Strong viral component. Revenue from advertising. Raising $500k.

J-Squared Media has launched their “Sticky Notes” Facebook application. It has 1.7 million users after six weeks, who have sent over 4 million sticky notes. They are working on several other related Facebook applications and are cash flow positive with $30,000/month in revenue from cost per action advertising. Not seeking funding. More here.

Search-To-Phone is a mobile search service via voice. Call and leave a voicemail asking about a product or service. The request is then routed to the appropriate business to call you back with information and/or a special offer. Built on TellMe and Gold Systems technologies for voice recognition. They’ve signed a business development deal with Excell Services to provess 10 million calls. They are looking for a small capital investment and more partners before launching.

Villij is a recommendation engine that analyzes your online life (social networks, blogs, bookmarks, etc.) to find people who may have similar interests as you. Raising $500k.

MadKast has the honor of being the first TechStars startup to launch. Our previous coverage is here. They’ve made a dead simple way to increase distribution for your blog with one line of javascript or one click for Blogger and TypePad. Once the widget is installed, readers can send a blog post via email, mobile MMS, or social bookmarking networks to friends. They are raising $300k in capital.

FiltrBox is a content monitoring and filtering service for blogs, news sites and other websites. Content is filtered by topics, keywords and context and then delivered to the user via RSS, email and/or text messages. Filters can be adjusted via sliders and will learn what you like over time. Raising $500k in capital.

KBLabs is developing Facebook applications and widgets. Wah! Cool was their first application, which launched four weeks ago. It now has 100k subscribers and is generating 1.5 million page views per week. Other applications include Post Secrets, Motivate Me and Track Bot. The founders are going back to college this Fall but will continue to consult and build Facebook applications. They are not looking for funding.

BrightKite serves location based notifications (”place streaming”) over email, instant messaging of text messages. The idea is to stream content about a place, from a place. Friends are alerted when you are nearby. You receive offers from local businesses. Etc. Targeted towards conferences, bars, parties and public places. It is also a platform for third party applications. Raising $500k in capital.

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The first batch of Techstars (a Y Combinator like incubator) startups are launching. MadKast is the first out the door. They’ve made a dead simple way to increase distribution for your blog with one line of javascript or one click for Blogger and TypePad.

With the widget, you can easily let visitors share your entire blog posts via email, mobile MMS, or through any of the social bookmarking services. The widget also maintains a list of emails and phone numbers you’ve contacted in the past to make sending new links to friends really easy. AddThis (which we use) has a similar widget, but focuses on an exhaustive list of social bookmarking services.

MadKast’s widget also offers an analytics package that tracks which posts are shared most often and what other blogs your readers are visit.

They plan on monetizing through splitting revenue with bloggers from contextual advertising sent along with the shared post or links. Charging for more complex analytics tools is another option.

MadKast was started by Doug Ludlow, Johann Moonsinghe, Tony Restuccia, and Josh Larson, the team originally behind Zemble.com, a mass text messaging service. They brainstormed the idea for MadKast while in Colorado applying for TechStars. TechStars is an early stage startup program that provides seed financing and mentorship in exchange for 5% in equity.