Tristan Zier

Transform your bed into the Optimus Prime of comfort

Use Alexa on your Mac, iPhone and Android

Mailchimp for physical mail

Comfortable hooks to keep AirPods from falling out

Mail Women's March postcards to your Senators

Social Recommendations For DJ Sets

Interact, search and follow the latest HN posts on Messenger

Video Q&A with influencers and experts 🐳

Snapchat for postcards

Turn anonymous traffic into company data

A new way to plan your trip

Amazon Prime for laundry & dry cleaning

Goals minus a desire for recognition = true accomplishment

Talk to your site visitors, their way

Fast, simple, powerful keyboard-driven commands for Mac

An elegant goal setting tool to keep your team aligned

Email copy from great companies.

Ultra-functional activewear for minimalists

Find new strength with smart fitness guidance.

Save money without thinking about it

Your company's revenue and expenses, on Slack

The first live streaming fitness platform

Streamlining bookings between live entertainers & venues

E*Trade of P2P / Real estate investing

Discover Algolia & build great search with our community

Clothes that record workouts

Pledge to never vote for Trump

Mixpanel for advertising

Turning tech-founders into CMOs

The notary app that's legal in all 50 states

Rapportive on steroids. See data about contacts in Gmail.

Make purchases in apps using your Venmo account

Find your paid subscriptions and cancel with 1-click

On-demand PR campaigns

Simple invoicing & ACH payments for freelancers

Watch YouTube videos with friends, synced to the second

The command line for the real world

Offline music player for Dropbox

Have a 360-degree view on your customers

Schedule text messages on your Android phone

360° Video. At the click of a button.

Build web applications, with your data, without code

Turn photos into framed prints

Power earthquake recovery in Nepal with solar.

Webinars and live-streams that don't suck

Analyze your SoundCloud influence

Written by Sam Altman

Y Combinator's Playbook (by Sam Altman)

The first affiliate program for crowdfunding campaigns

List your favorite health products, get paid when people buy