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Turn your kid's iPad addiction into a learning superpower with games backed by cognitive science—guilt-free screen time.

A DRM-free romance bookstore promising indie authors better cuts and marginalized readers a judgment-free zone for their steamiest reads.

Search reimagined as a polite butler—just ask 'Why is the sky blue?' instead of mastering Boolean operators and keyword syntax.

MySpace for British teens with customizable skins and music sharing—owned 40% of UK social before Facebook crossed the pond.

LinkedIn with Facebook's social juice—professional networking that felt less like a corporate graveyard.

Google with a human touch—crowdsourced experts answering your questions in real-time instead of sifting through search results.

Click fraud cops for advertisers—promising to catch the bots stealing ad budgets with real-time pattern analysis.

A virtual penguin playground where kids could waddle around, play mini-games, and buy digital furniture with their parents' money.

Tinder for brands and influencers—automated matchmaking to cut out expensive agencies and find your perfect #sponcon soulmate.

Photo sharing that magically connected you with nearby strangers—because nothing says 'social' like forced proximity.

They created looping videos before Vine made it cool—but being first doesn't matter when you're also forgettable.

Movie tickets for less—because who doesn't want cheaper seats to watch films they'll stream at home next month anyway.

Premium guided audio tours for travelers—like having a local expert in your earbuds for every city block.

Another streaming service that promised to disrupt Netflix—with a name that screamed 'we peaked in business school.'

Campus-only social network promising hyper-local college connections before everyone realized dorms already had GroupMe.

Cross-device tracking that followed users from phone to laptop to tablet—Big Brother meets Madison Avenue.

Radio for indie artists—a curated platform where emerging musicians could bypass major labels and reach listeners directly.

Facebook for classrooms—a social learning platform promising to make education as engaging as scrolling through feeds.

India's educational equalizer—partnering with institutions to deliver K-12 through professional courses online at scale.

Mobile video editing with pro-grade effects for everyday creators—democratizing Hollywood-level production from your pocket.

Unlimited photo storage and AI organization to tame your digital photo chaos across all devices and platforms.

Self-service matchmaking for brands and YouTube creators—Tinder for influencer marketing minus the awkward DMs.

Netflix's TV guide—one search bar to rule all streaming services and end the 'what should I watch tonight' spiral.

Data-driven mobile ad platform promising to find your app the perfect users through sophisticated targeting and real-time bidding.

Your personal content butler—AI that cuts through information noise to serve you only the most relevant stuff.

Anonymous Q&A platform that let teens ask burning questions and get brutally honest answers from strangers.

Q&A-based social discovery that promised deeper connections than Facebook's shallow likes and pokes.

The original social network that promised to digitize your friendships before anyone knew they wanted that.

Free websites for everyone with themed 'neighborhoods'—basically WordPress meets SimCity for the dial-up era.

Foursquare for TV—check into shows, collect badges, and prove you watched The Bachelor before it was cool.

Turn boring errands into Pokemon Go for places—collect badges and rewards for checking into coffee shops and gas stations.

Groupon's spontaneous cousin—real-time deals for filling empty restaurant tables and impulse buyers with spare cash.

Free Spotify before Spotify—unlimited music streaming powered by users uploading whatever they wanted, no questions asked.

Rock stardom simulator with live crowds and real music videos—Guitar Hero's $50M bet on making air guitar feel authentic.

Uber for licensed cabs—promising the convenience of app-hailing while keeping traditional taxi drivers employed.

Twitter for sports fans—real-time polls and debates for jocks who needed their own clubhouse away from cat videos.

Real-time event commentary hub—basically Twitter for live events before Twitter dominated live events.

Drop-in video hangouts that promised to make virtual socializing as spontaneous as crashing your friend's couch.

Dating app that skipped small talk by letting users propose actual date ideas—'let's grab coffee' became the new swipe right.

Built an ad platform for VR worlds that barely existed, promising immersive marketing to audiences still figuring out headsets.

Promised to predict which shoppers would actually buy stuff, turning ad spend guesswork into data-driven gold for e-commerce.

Promised to drag your online friends into the real world with a unified app for discovering and planning actual face-to-face events.

Turned Instagram pics into travel guides using AI—because nothing says 'authentic local experience' like algorithmic social media analysis.

Photo sharing and printing middleman for families who still wanted physical prints in 2011.

Pinterest meets Pocket—a pretty bookmarking tool that promised to cure information overload with social sharing.

Klout turned your tweets and posts into a 1-100 score to prove how influential you were online—because nothing says clout like a number.

Interactive digital textbooks that would make learning engaging while saving students from lugging around heavy books.

Eventbrite killer that promised seamless event discovery and booking for both organizers and attendees in one platform.

A centralized hub to discover conferences and network with professionals—basically LinkedIn Events before LinkedIn had Events.

Plug-and-play messaging APIs for developers who didn't want to build chat from scratch—Twilio for texting, but cooler.