1. Email clients, where most of the stuff that needs to get done arrives in the first place, tweaked to do the job.
2. Dedicated GTD apps like kGTD or Easy Task Manager provide more focussed collection and processing buckets.
3. Web-based solutions offer platform-independent tools for getting things done, especially good if you use a Mac at home and a PC at work.

After the jump, you will find some of the best options in each category.

Mail.app

Smart folders and excellent plugins like Mail Act-on and MailTags quickly turn Mail.app into a powerful productivity tool.

For starters see my Getting Things Done with Apple Mail and Got some things done with Apple Mail, Parts One and Two. Patrick Rhone also has an excellent plan of attack .

The app’s large and clever user base has produced additional tools like the Tickler file applescript and the MailTags Tickler.

Unsurprisingly, it’s my weapon of choice for Getting Things Done.

Thunderbird

Thunderbird users have also put its built-in labels and saved searches to work creating a GTD system.

Entropic Principal has a great post on how to do this (see his updated Thunderbird GTD post too). Katy Whitton’s post is another excellent resource, incorporating the Lightning calendar and other Thunderbird extensions.

Entourage

With its integrated calendar, contacts and other bits and pieces, Entourage is well placed to offer the grunt for GTD app.

Jorge Arango has posted his Entourage-GTD system, based in part of the GTD Projects with Entourage article at Slacker Manager. You can find an AppleScript to create GTD projects within Entourage on the 43 Folders Discussion Board.

David Allen sells an ebook of tips for implementing GTD with Entourage for USD 10.

kGTD – Kinkless GTD

Ethan Schoonover’s OmniOutliner Pro template and collection of AppleScripts is an outstanding GTD solution. If I didn’t use Mail.app to manage my workflow, this is what I would use.

All the processing and management features are there and the two-way syncing with iCal is very slick. An Applescript that transfers messages from Mail.app into kGTD’s Inbox brings added integration.

Amazingly, it is freeware, although it requires OminOutliner Pro (USD 69.95). Extra productivity-fu is provided by Ethan’s Quicksilver Action .

But don’t take my word for it; Merlin Mann is a hard-core fan .

Todo.txt

Gina Trapani of Lifehacker fame has created a clever script to manage a plain text todo file from the command line. It’s not as forbidding as it sounds (watch the movie ).

Recently updated (changelog ), it offers support for projects, prioritisation, GTD contexts and more.

You can pipe it through GeekTool so that it sits right in your face on the Desktop:

EasyTask Manager

This stand alone app (see a previous Hawk Wings review) offers a simple GTD framework without the learning curve (or the grunt) of kGTD.

Recent versions of the app have solved some of the initial teething problems, making it a good alternative in the dedicated apps department.

The interface is simple and efficient:

EasyTask Manager is shareware (USD 19.99) and available from the developer’s web site .

iCommit

iCommit is a web-based, PHP-scripted management tool for Getting Things Done. Think of it as a wiki without the pain.

It provides the standard contexts, project and next action tools, but also allows for attachments, printable views and other neat touches described in a review on 43 Folders .

The developer hosts the app on his server on a “first come, first served” basis. Great for people who need to use both Macs and some other OS.

Backpack

Jon Hicks loves Basecamp for getting his things done, but Backpack, the slimmed-down personal version of Basecamp, has almost all the things you need to run a GTD system.

Frank Meeuwsen has posted at length about implementing GTD in Backpack and maintains a de.licio.us links list of other people’s hacks.

Patrick Rhone recently posted a great description of how Backpack works for him.

Make it all even easier with Quicksilver, the Backpack widget and a Desktop Backpack app like Packrat (“Backpack Unplugged”).

Gmail

Bryan Murdaugh has written a white paper on using Gmail for GTD.

Liming Zhu thinks that system can be improved.

Jonathan Powers prefers “Slacker GTD” , a kind of anti-getting-things-done system using Gmail and Gcal, which is not entirely a joke.

wikis

I will mention this at the end of this piece, because if I don’t Ted Palvic will scold me.

GTDTiddyWiki is very clever, very cool, very open source, very flexible and innovative and a very attractive cross-platform solution to GTD that I have never used. Some people like it a lot.

Still not satisfied?

43 Folder’s wiki
A list of blogs that talk about Getting Things Done
GTD resources list at 52 Reviews
Joel Spolsky: How to get things done when you are not in charge
PigPog: GTD on a PDA GTD, getting things done, mac, apple, productivity, apple mail, mail.app, gmail, thunderbird, entourage, terminal, Web 2.0, backpack, wikiSimilar Posts:

• Mail.app and Getting Things Done
• AppleScript to create and run a GTD ‘Tickler file’
• A faster Backpack: Quicksilver, widget
• Add notes your Backpack pages by phone
• Gmail Loader: Moving Mail.app messages to Gmail

Among other things, the post points out that email is customisable and tweakable in ways that other modes of online communication are not, that it is universally available and accessible and that people understood what it is and how to use it.

You may remember a flurry of Internet opinion a few months ago forecasting the imminent death of email and/or the replacement of email with wikis and Instant Messaging.email, collaboration, IM, wiki, Web 2.0, internet, productivitySimilar Posts:

• Reports of email’s death not greatly exaggerated?
• Email is… like… so over
• Collaboration and “occupational spam”
• The Good and the Bad in Email
• UK Survey proves “death of email” premature

It turns out that Stowe Boyd predicted the death of email in the Summer of 2004 at the Supernova conference. He was hounded from the podium by cynical hecklers.

We shouldn’t mourn email’s passing, Boyd says:

It should be obvious that the only thing that email is well-suited for is things that look suspiciously like spam: broadcasting a static message to many, many people…

…So this will be the year when it becomes truly obvious — even to those dinosaurs who wanted to tar-and-feather me at Supernova — that email’s days are numbered. Not that it will disappear — surface mail and fax will linger on due to the long-tail of communication media — but it will clearly be a byway, and not the highway, for communication and collaboration.

Better start a blog about iChat.Similar Posts:

• More Rumours of the Death of Email
• Collaboration and “occupational spam”
• Email is… like… so over
• Email: Keeping it simple
• AppleScript to archive emails by year and quarter

Postini, a Californian email filtering business, forecasts that legitimate e-mail will drop to 8% this year, down from 12% last year. According to Business Week, “the onetime productivity wonder has turned into a maddening time waster.”

Because email’s signal-to-noise ratio is now so great, companies like Walt Disney, Kodak, Yahoo! and the U.S. military are dropping email as the prime medium of cooperation in favour of wikis, blogs and instant messaging.Similar Posts:

• Reports of email’s death not greatly exaggerated?
• Collaboration and “occupational spam”
• UK Survey proves “death of email” premature
• How email is still the best colloboration tool
• More Rumours of the Death of Email