Which input methods does KeyKey support?

KeyKey is a Traditional-Chinese input method with two modes: Cangjie (倉頡) and Simplex (速成, also called 簡易). It supports wildcard input with *, frequency-ranked candidates, associated phrases (聯想字詞), full-width punctuation, and an optional Traditional-to-Simplified output toggle.

How do I install KeyKey?

Download the signed, notarized installer (YahooKeyKey2.pkg) from GitHub and double-click it. It installs to ~/Library/Input Methods without admin rights, then asks you to log out. After logging back in, add 倉頡 and/or 速成 under System Settings ▸ Keyboard ▸ Input Sources ▸ + ▸ Traditional Chinese, and switch with Ctrl-Space.

What do I need to run KeyKey?

A Mac with Apple Silicon (arm64) running macOS 12 Monterey or later. KeyKey is signed with a Developer ID and notarized by Apple, so it opens cleanly.

KeyKey — Yahoo!奇摩輸入法 Cangjie (倉頡) & Simplex (速成) for Mac

Q: Is this the original Yahoo! KeyKey?

No. KeyKey is an independent, open-source rebuild in Swift, created in tribute to the original Yahoo! KeyKey (Yahoo!奇摩輸入法). It is released under the MIT License.

The Yahoo! KeyKey typing experience, brought back

Fast, frictionless Cangjie and Simplex input that Mac users have missed — built fresh in Swift.

倉頡 + 速成 input

Both classic modes — full Cangjie (倉頡) and Simplex (速成) — with wildcard * matching when you don't remember every radical.

Frequency-ranked & adaptive

Candidates are ordered by how common they are, and the characters you pick rank higher over time — so your most-used words rise to the top.

Associated phrases (聯想字詞)

After you commit a character, KeyKey suggests the words that usually follow — so common phrases come together in a single keystroke.

繁 → 簡 & full-width punctuation

Toggle Traditional-to-Simplified output (輸出簡體字) and full-width punctuation (全形標點) right from the input menu — no separate preferences window.

Native candidate window

A vertical candidate list matching the original layout — it follows the text caret and flips above or clamps to the screen so it's never cut off.

Lightweight & open source

Shared resources keep memory use low across apps, and the full source is on GitHub — free, MIT licensed, and yours to inspect or build.

Up and typing in four steps

The installer is signed and notarized by Apple, so it opens cleanly — no Gatekeeper warnings.

Download & open

Grab YahooKeyKey2.pkg from the GitHub release and double-click it to install.

Log out

It installs to ~/Library/Input Methods (no admin needed), then asks you to log out and back in.

Add the input source

System Settings ▸ Keyboard ▸ Input Sources ▸ + ▸ Traditional Chinese → add 倉頡 and/or 速成.

Switch & type

Press Ctrl-Space to switch to KeyKey and start typing. Toggle 簡體 or open 關於 from the input menu.

Get KeyKey

Free and open source today, with a Mac App Store edition on the way.

Available now · free

GitHub release

Free forever · MIT licensed

Signed & notarized installer — opens cleanly
Installs without admin rights
Full source on GitHub — inspect and build it yourself
Both 倉頡 and 速成, with 繁→簡 output toggle

Get the latest release

Coming soon

Mac App Store

Planned · automatic updates

One-click install, sandboxed by Apple
Automatic updates through the App Store
Same Cangjie & Simplex engine
Not available yet — grab the GitHub build today

Coming soon

In tribute

KeyKey is an independent, open-source rebuild in Swift, created in tribute to the original Yahoo! KeyKey (Yahoo!奇摩輸入法) — the Traditional-Chinese input method many Mac users loved. It carries that experience forward for modern macOS. See the full credits; released under the MIT License.