AllTrails is a member driven outdoor enthusiast community that gives you unlimited access to trails, maps, reviews, and photos for 22 different activities including hiking, mountain biking and rock climbing.

AdCru is a pay-per-follower ad network for Twitter founded in September 2009.

Animoto (San Francisco) generates custom, professional-looking slideshows from user-uploaded music and photos. Their “patent-pending Cinematic Artificial Intelligence technology and high-end motion design” drives the web app. (TechCrunch coverage)

Burbn is a new way to communicate + share in the real world. (TechCrunch coverage)

EGG HAUS is an interactive agency. We help our clients create and deploy engaging branded experiences on every consumer platform.

FanPop is a network of user-generated fan clubs for different topics of interest created and maintained by the community of fans.

Fanvibe (formerly FanPulse) is the best way to follow sports on the web and on your iPhone. Fanvibe let’s you check-in to any sporting event, and unlock benefits including game updates, trash-talking with friends, awards, and discounts on tickets and merchandise. (TechCrunch coverage)

Formative Labs – working on ideas that solve problems and change consumer behaviors.

Formspring: Ask questions, give answers and learn more about your friends. (TechCrunch coverage)

Hollrr – Want to help your friends discover a great new product? A quick Hollrr is the easiest way to let them know what deserves a shout out. (TechCrunch coverage)

JibJab (San Francisco): Headquartered in Santa Monica and founded by Gregg and Evan Spiridellis, and backed by Polaris, JibJab is a leading e-Card business. (TechCrunch coverage)

LearnBoost is an education platform for secondary schools. (TechCrunch coverage)

Millennial Media delivers the largest reach – 83% of the US mobile audience – through the largest mobile advertising network in the US. (TechCrunch coverage)

Mr. Tweet looks through your extended network to help you find effective relationships and information most relevant to yourself.

Recurly makes subscription billing easy for developers and organizations of all sizes. (TechCrunch coverage)

The Social Collective provides a hosted service that gives conference organizers their own mini-Facebook and Twitter. Customers include Oracle, SXSW, RubyNation, etc. (TechCrunch coverage)

Sponsoro connects event and sponsors.

The Start Project – turning ideas into action. (TechCrunch coverage)

Stickybits brings the physical and digital worlds together with barcode stickers which trigger audio, video, photo, and text messages when scanned. (TechCrunch coverage)

startupSQUARE is a marketplace where entrepreneurs can meet one another and brainstorm their next big business idea.

TaskRabbit(formerly runmyerrand.com) helps individuals and small businesses in a community outsource their tasks and deliveries, leveraging the latest technology and the social networking paradigm.

Trazzler helps you answer one question, “Where should I go?” by recommending trips unique to your location and Travel Personality. (TechCrunch coverage)

Wild Pockets is an end to end solution that supports creators throughout the life cycle of 3D game development

WiseStamp empowers your email signature: easily customize Google Chrome html email signatures, Include IM & Social profiles, Automatically share your Blog posts, Quotes, News, Bookmarks and more. (Mashable coverage)

AssuredLabor enables companies in emerging markets to recruit better candidates, faster for less using mobile technology. (Xconomy coverage)

Azavea creates innovative software tools that use geographic data to visualize and analyze our world. Azavea is a certified B Corporation, and we strive to use location-based technologies to help promote the emergence of more dynamic, vibrant communities..

Baydin adds intelligence to email clients. Baydin’s Gmail and Outlook plugins make it easier to manage email and find expertise inside companies. (ReadWriteEnterprise coverage)

Energesis Pharmaceuticals is a biopharmaceutical company developing therapeutics for obesity and metabolic diseases that target brown fat. The Company’s approach is a novel strategy directed at increasing the body’s ability to burn fat.

GraphEdge provides detailed analytics for the social Graph – essential for any organization using social networking for marketing, PR, or support.

Huddlehub provides fantasy sport managers one website to manage all of their fantasy sport teams. HuddleHub is currently in private beta aiming for a public launch for the upcoming football season. (PC World coverage)

kWhOURS, Inc. provides mobile data collection, calculation, and reporting tools for commercial energy auditors. These tools reduce the time, cost and knowledge needed to identify energy saving and renewable energy opportunities. (Greentechmedia coverage)

Labtiva designs online software for scientists.

Localytics is a real-time analytics platform for mobile applications; it helps iPhone, BlackBerry and Android app makers better understand their users, so they can make smarter product and marketing decisions. (TechCrunch coverage)

Mob.ly’s team brings together deep product design experience, technology expertise and a passion for building world-class mobile experiences. (Acquired by Groupon: TechCrunch coverage)

MyHometownLink brings hometowns together by connecting helpful students with parents looking for help around the house (babysitting, tutoring, pet sitting, yard work, etc.). Unlike any other site of its kind, MyHometownLink will allow members to see how their friends connect them to other members in their network.

NeuroScouting optimizes athletic performance through neuroscience-based training technologies.

OmniStrat provides businesses with an affordable, online software application enabling powerful strategy planning and execution capabilities.

OsComp Systems has developed a revolutionary new compression technology that reduces initial and operating costs for natural gas producers. OsComp’s initial product, “WellSpar”, is designed to enhance the productivity of natural gas wells by deliquifying efficiently and cost-effectively. Future planned applications of the technology are for CNG-refueling as well as on pipeline stations and offshore platforms.

peerTransfer helps individuals and businesses to send and receive money between international bank accounts at much lower cost (low fees, better exchange rates) and increased convenience than traditional banking. (Xconomy coverage)

Plummelo – Universal online recipe box.

RelayRides is the world’s first person-to-person carsharing service. (Innovation Economy coverage)

Relay Technology Management was founded by two Ph.D. Candidates at Tufts School of Medicine. Relay has developed a software platform, the Innovation Engine, which takes an analytical approach to facilitating technology transfer between academia and biotech/pharma.

SkillTesting allows recruiters and technical hiring managers to vet their technical job candidates over the web and make smarter hiring decisions.

SocialSci connects researchers with a global online community to make real scientific discoveries.

TechStars is a mentorship-driven seed stage investment fund that operates three-month boot-camps for entrepreneurs throughout the US.

Textaurant aims to create a dialogue between restaurants and patrons through the use of technology. Beginning with text messages that update patrons waiting for a table, and extending both before and after the meal, Textaurant connects restaurants with their customers for a more satisfying experience. (VentureBeat coverage)

Tivli uses a new, highly scalable, bandwidth-efficient Internet video broadcast technology to stream live HDTV from major network TV providers directly to your laptop in real time. With only an Internet connection, users can watch live, local over-the-air television for free and subscribe directly to live premium content providers like Comedy Central or HBO for a fee, using an iTunes-like marketplace.

UserMojo is an emotion analytics platform that measures quality of user experience and provides site owners with the core insights they need to optimize their interface and conversion.

Zodah helps you simplify the frustrating task of managing upcoming bills with tools to track, archive and compare your bills.

AssuredLaborenables companies in emerging markets to recruit better candidates, faster for less using mobile technology. (Xconomy coverage)

Collecta monitors the update streams of popular realtime blogs and sites like Twitter, WordPress, and Flickr, and shows results as they happen.

Zozi is a social marketplace and community for adventure, cultural, and sustainable travel.

Existence Genetics – is pioneering the field of predictive medicine. Utilizing patent-pending technologies, Existence Genetics analyzes your genes and provides you and your health care professional with understandable, useful, and fully personalized solutions to protect and preserve your health.

Good Crush – A double-blind dating platform where both users must express a “crush” before they are matched.

Group Commerce provides group-buying technology solutions that enable affinity groups and publishers to energize the buying power of their communities.

Jibe creates the first “Who You Know” Employment Networking Platform that opens up the social graph of both employers and job seekers to place the most trusted & qualified candidates with the right positions.

KidMango as the world’s largest online library of independent, professionally produced video directed at kids.

Mailgun is a virtual email server in the cloud. Developers get root access to their own virtual mail server through an advanced web-service API.

Postling is a tool that helps small businesses face the daunting task of social media marketing. Brought to you by the founders of Etsy.com.

Scoop St. – A local, group-buying coupon platform.  Scoop St. offers time-based, heavily discounted offers for local high end food and services.

Stickybitsis a fun and social way to attach digital content to real world objects.

Switchbiotics is working to discover and develop novel antibiotics for life threatening bacterial infections.

SECWatch is site that helps users navigate the SEC website and fillings, making these filings a more useful research document.

Socialcord is a SMS based billing platform that allows users to create premium content subscriptions in social networks.

Appjet is an online programming tool for building simple web apps including collaborative, real-time document editor, Etherpad. Update: Acquired by Google (TechCrunch article here)

Brizzly is a social media reader from Thing Labs, Inc. It currently works with Twitter and Facebook, and adds features like inline media (photos, videos & maps) expansion, muting, groups, IM-like direct messaging and more. (TechCrunch coverage) Update: Funded by Polaris Venture Partners

LOLapps is a provider of distributed social applications. (InsideFacebook coverage) Update: Funded by Polaris Venture Partners, Ariel Poler and others

FoulPlay Media Shhh! They’re all in top secret development! Update: Secured funding

TxtEagle enables people in the developing world to earn small amounts of money on their mobile phone by completing tasks for corporate clients. Update: Secured funding

Cardpool is a gift card exchange service where anyone can buy, sell, or trade their gift cards in a safe and secure environment. (TechCrunch coverage). Update: Secured funding

Yardsellr – In the tradition of neighborhood garage- and yard-sales, Yardsellr makes it easy for you to list and sell, or find and buy whatever you want. Yardsellr helps spread the word about your item within your online “neighborhood” – social and messaging networks like Facebook, Twitter and Google. Update: funded by Harrison Metal Capital

MyZamana is a modern dating site for the South Asian market. Update: Secured funding

Poken provides small devices that contain your contact details and make exchanging contact details easy. It is the easy and fun to meet, connect and stay in touch.

ProfessionL centralizes all your recruitment management needs into one unified web-based software application that can be used by any business that recruits (including recruitment specialists).

Dinube – A cloud-based platform that seamlessly enables loyalty rewards and payments by mobile phone, in a single, context-aware transaction.

Twylah: your personal assistant on twitter.