Chiahuai Chang (Jim)

A real-time ranking of 500+ cryptocurrencies

Charge unsolicited email senders a cryptocurrency fee

How to start a startup, by Y Combinator

An AI-powered time-tracking app

Planning tool for launching your app successfully

Deep dive on all the gear and players in the VR ecosystem

Apple's new iPhone 7 and 7+

Vector emojis for designers

Infographic maker based on visual language

Clipboard manager from the creators of Tweetbot

Remove hard bounces and email traps from your email lists

Curated collection of the best web page designs

Write perfect emails with Artificial Intelligence

The world’s most trusted internet speedtest

A podcast about a better future

Create free beautiful screenshots for App store/Google play

Convert YouTube video to MP3, GIF or MP4

Learn how to code on your iPhone📱

One-to-one video calling. Google's FaceTime competitor.

Learn how developers are writing their own paychecks