Download IPA Palette 2.2.1 (3.2M). Here is some documentation.
Source code can be found on GitHub.

For Mac OS X 10.2-10.4:
Download the previous IPA Palette 2.0 (1.3M).
Download the previous IPA Palette 1.0 (616K).

New Features in 2.2.1

• Complete localizations for IPA Manager.

Bugs Fixed in 2.2

• No longer use an installer; for Mavericks compatibility we now have an app called IPA Manager that will install IPA Palette for you.
• Restored the ExtIPA Nasal Escape symbol, which went missing somewhere along the line, probably in the 2.0 transition.
• Multicharacter symbols like /ǃ¡/ from ExtIPA can now have keyboard shortcuts displayed (if you have a really good keyboard layout!).
• Finally diagnosed the reason I could never seem to change the preview font in Snow Leopard -- a Core Text bug or misfeature that was cacheing font data based on the address of the string object I was passing on, instead of its content (since I was reusing a mutable string).

New Features in 2.2

• You can click in an unoccupied part of an image map (a part that has no IPA symbol and thus doesn't hilite under your mouse) and drag it out into a new mini-palette (I call them "auxiliaries"). This way you can have available whatever subset of the IPA you use the most, without having to keep switching between tabs. The auxiliary palettes hide when you hide the main one, and are saved to your preferences.
• Some optimizations to the PDF image map related to mouse tracking should benefit performance and memory use.
• Mouse tracking starts up before font scanning finishes, so you can have symbol description information available earlier, even if you have many fonts installed.
• Made it possible to rearrange the custom symbols layout by dragging rows in the table. (You can copy if you hold down the Option key.)

Bugs and Potential Problems

• IPA Manager is not fully localized in this prerelease version.
• The PDF icon used in Snow Leopard and later doesn't hilite (invert to white on black) correctly in the International menu, although it does in the Pref Pane. There's probably something wrong with the alpha channel.
• Limitations in the 'uchr' resource parser means that for some complex Unicode keyboards, like Unicode Hex Input, keyboard shortcuts for IPA symbols are not found. Fixing this is not a high priority but may be done eventually.
• You can't accept the Custom Symbols sheet by hitting return (at least not on my Snow Lion systems).
• I did all these added localizations myself, and I do not speak any of the languages. There will be errors! Please point them out. I hope some of them are funny.

Feel free to subscribe to my IPA Palette announcement list if you want to be notified about new versions.

Name: E-mail:

What Folks Are Saying

• IPA Palette does exactly what a linguist would want, exactly the way a linguist would want it. It's a beautiful piece of work.
  -- M.D.
• I have a great appreciation for the computer programmers that see a need and go all the way to meet it.
  -- A.W.
• How the heck did you finally come up with an IPA system that actually WORKS?  You're a genius! Thank you!
  -- K.S.
• DUDE! You rock. Thanks so much for putting that together. It is MIRACULOUS!
  -- C.J.
• ...lovely little unit it is too, takes a lot of the blood sweat & tears out of the task of transcription.
  -- C.H.
• I'm taking my first linguistics course and hit a serious note-taking roadblock when we started to use IPA. I take my notes on my Mac laptop and just couldn't keep up the insert->character->etc routine fast enough to catch what my prof. was talking about. Enter IPA Palette.
  -- L.G.
• I want to thank you very much for that software I was waiting for for quite a long time.
  -- B.S.
• just a word of thanks for a very nice ipa input device.... your palette has a made an odious task much more manageable.
  -- S.W.
• Hey, THANK YOU so much for creating this incredibly useful tool.
  -- D.M.
• Thanks again for the great tool. It is very helpful.
  -- T.R.