Developer: Mac Productive

Current Version: 1.3.1

Price: Free

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: FileMaker Pro (free Runtime version available)

Distinguishing Features: Also organizes notes, contacts, and other information related to projects.

News: None

Developer: Jon Crosby

Current Version: 0.9.3

Price: Free, open-source

Development Status: Beta

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: Yes

Print Lists: Yes

Required Applications: None

Distinguishing Features: Processing engine; iPod sync; Mail and MailTags compatibility.

News: Developer recently discussed the path to 1.0 on his Web site.

Developer: Orionbelt.com

Current Version: 1.9.2

Price: $20

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: Yes

Print Lists: Yes

Required Applications: None

Distinguishing Features: Windows version available; automatic advance of uncompleted due tasks to “today.”

News: Improved online presence for iPhone compatibility; improved printing capabilities now include notes; recently released EasyProject.

Developer: Twin Forces

Current Version: 2.0d15

Price: Free, open-source

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Quick-entry box; fuzzy repeated actions.

News: 2.0d15+ released with Leopard compatibility.

Developer: Ghost Park Software

Current Version: 1.1

Price: $20

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: .Mac syncing (without iCal running); PDA/iPod syncing.

News: A beta version is available for Leopard users; plans are in place for iPhone compatibility.

Developer: Bartek

Current Version: 1.4.5.6

Price: Free

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Compatible with Address Book, Mail, iSync, and MailTags, as well as Web browser support, Path Finder, Yojimbo, MacJournal, and others; quick-entry feature; simple yet powerful interface.

News: Ongoing development of current version frequently brings additional features; v.2 is in development (public alpha release available for download), as is iGTD Pro.

Developer: HensPace

Current Version: 1.88

Price: Free

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: Python 2.4 or higher

Distinguishing Features: Compatible with any OS running Python (including Windows); very simple, text-only utility.

News: None

Developer: Ethan Schoonover

Current Version: 0.83

Price: Free

Development Status: Beta

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: OmniOutliner Pro 3.6 or higher

Distinguishing Features: Nothing fancy, but a simple list management tool.

News: Schoonover has effectively abandoned development of kGTD since joining the staff of the Omni Group and working on the OmniFocus development team.

Developer: Apokalypse Software Corp

Current Version: 1.2

Price: Free

Development Status: “Pre-final”

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: Mori 1.4

Distinguishing Features: Expands Mori (digital notebook) functions to include GTD principles.

News: None

Developer: Midnight Beep Softworks

Current Version: 1.3.1

Price: $35

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Action timer; quick-note and quick-action hot keys; Mail compatible; “automatic” data collection.

News: Latest version is Leopard-compatible; v.2 was recently discussed in great detail on the Web site.

Developer: Omni Group

Current Version: 1.0.1

Price: $80

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Mail- and Spotlight-compatible; simple interface with powerful view features.

News: None

Developer: Thiamin Trek

Current Version: n/a

Price: Free

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: Python

Distinguishing Features: Cross-platform compatibility; incorporates Covey-style prioritization with GTD; a simple text-based list.

News: None

Developer: Todd Vasquez

Current Version: 1.2j

Price: $20

Development Status: Release

iCal Sync: Yes

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: A very different approach using a set of AppleScript routines to impose organization and communication across a computer’s entire filesystem; multiple language support.

News: A feature allows exporting action lists to iPhone by e-mail.

Developer: Hog Bay Software

Current Version: 1.0.3 (26)

Price: $19

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Simple, text-based system; no-frills, intentionally designed as an alternative to more full-featured systems.

News: Introductory pricing currently available.

Developer: Cultured Code

Current Version: 0.9.1

Price: $50 (pre-release price of $40 with signup for newsletter)

Development Status: Alpha

iCal Sync: Yes

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Features will include: iCal sync; repeating tasks; Mail compatibility; network and multi-computer operation; and import/export options.

News: Those who want to serve as alpha testers may request access. Final release version will cost between $40 and $50.

Developer: Avente Pty Ltd.

Current Version: 1.2.3 (2.0e also available)

Price: Free, open-source

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Cross-platform compatibility through Java; interactive collection and processing.

News: “Epsilon” version of v.2 includes a major overhaul, including plug-in modules, an improved interface, and fixes to problems in previous versions.

Developer: AirBlade Software

Current Version: 1.0.13 (r22)

Price: £15 (approx. $30)

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: No

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Two-panel view; single-click creation of new tasks and projects; contingent and dependent actions; time and energy requirement indices; Windows version available.

News: Current version is only compatible with Mac OS X 10.4.

Developer: Objective Satisfaction

Current Version: 1.3.2

Price: $29

Development Status: Release

iCal Sync: No

QuickSilver Plug-in: Yes

Web-app Sync: No

Print Lists: Yes

Required Applications: None

Distinguishing Features: Drag-and-drop intensive for easy reorganization; .Mac syncing for multiple computers; XML export.

News: None