One of the more interesting talks (even though it was short) at the GTD Summit 2019 in Amsterdam in June was David Allen’s appearance on stage to discuss the “ultimate” GTD app.  I really enjoyed hearing more about the history of this subject, which has been going on for almost 30 years.

Here is David introducing the topic at the summit (another VIDEO source & AUDIO source):

Here is a link to the PDF download.

There is also a recently posted interview with David Allen and Eric Mack on the topic via the subscription service GTD Connect (which I highly recommend) and recently posted here:

• Part 1 – David Allen and Eric Mack
• Part 2 – David Allen and Eric Mack

Eric also recently posted this blog post on the topic “David Allen, and I talk about the ultimate productivity app“.

Here are some of the pictures that I took during the talk:

UPDATED: 2025-12-12