What's the best cross-platform/mobile-supported To-do app?

I like Toodledo. I use the web-interface from multiple systems (Mac, Windows7, Ubuntu) and I have the iPod Touch application for mobile access when I have Internet connectivity. Big benefit for me was that it was easy to adapt to Getting Things Done (GTD) methodology with projects, tasks, sub-tasks, context, etc but also the ability to link to higher level's of focus like responsibilities and goals.

I will second Toodledo. I tried all the rest, and just refuse to pay $40 to $70 for a to-do app! The Toodledo web app works very well on all platforms, and the iPhone / iPod Touch app is free and great. A perfect match.

I have recently fell in love with TeuxDeux. The idea is simple. What do you have to do today? That's it. They say they're working on an iPhone app too, but no date yet.

From what I recall, rememberthemilk.com has a free signup. You can pay $25 a year for a "pro" account that will get you access to the iPhone, Android, Blackberry and Windows Mobile apps. If you have an Android device I'd suggest going with Astrid. It's free and syncs with your standard (free) RTM account. If you're looking for a desktop app that works with RTM, and use Linux, you can try Tasque. Also, you always have the option of using Google Gears for offline use regardless of what OS you're using. Upgrading to a "pro" account for a nominal fee keeps the developers in business and potentially keeps the upgrades coming as well.

Right, I know about the free RTM account, and as a developer, I am all about keeping money in their pockets. I know a lot of work go into these sites, but there are too many free alternatives, and, at the end of the day, it's a to-do list. Absolutely no discredit to the developers, but I am simply not paying for a to-do list, especially $25-50. Think about the amount of work that goes into an XBox game that costs $60. I hope I'm making my point without coming across brash. It just seems a little disproportionate.

I hate that I'm answering my own question, but for me, and I think a lot of other people, this is a great solution.

I stumbled across Fluid recently, which allows you to create an site-specific browser or (desktop app in other words) in Mac OSX. I thought it was a great idea, but didn't offer anything really unique. I used it for TeuxDeux for awhile, but ended up using the web version in Firefox instead. However, I discovered a brilliant alternative: use the iPhone-formatted version of Gmail tasks! The original source was http://www.macstorie...pps-with-fluid/ and has several other ingenious uses for Fluid. A cool bonus is, that you can pull this up on your iPhone and save it to the home screen if you have one. But even if you don't, the mobile view is manageable and you can still set Fluid's User Agent to render in Mobile Safari view.

If you don't have a Mac, you may be able to use Mozilla's Prism, but I really can't confirm that.

Either way, this is a perfect solution for me.

I'm liking the combination of Google Tasks and GeeTasks for the iPhone. I second the comment about Google Tasks' lack of features (collapse/expand categories would be nice), but the simplicity and cost ($2.99 for GeeTasks) are hard to beat.

Things (OS X and iPhone) is simply amazing.

http://culturedcode.com/things/

Not sure if that counts as cross platform...

I really miss the criteria that the data will be stored on MY server - not som "random" company's server, that might be read/hacked/sold/whatever compromised.

As a reference look at xmarks/foxmarks (the Firefox extension for syncing bookmarks across different computers) HERE is it possible to store data on my own server (via WebDAV).

@kevin.suttle:

Re: RTM price

I'm not understanding your logic. They offer it for FREE. They ask for $25 if you want to pay for it. Not that your criteria said anything about it having to be "FREE", but you do say you're "all about keeping money in their pockets", yet "I am simply not paying for a to-do list" confuses me. What's $25? It's what they decided the market will bare. It's the Flickr model. An XBox game costs $60 because that's the absolute floor for that market. Game developers would charge $200 if they thought they could get away with it. I agree with you that something like RTM should be cheaper (around $5-$10), but comparing it to an XBox game is apples and oranges. That's like saying "$60 is way too much for a video game. Look at all the effort that goes into Linux, and it's FREE." But this is all rather moot since RTM is also FREE.

Not that RTM is the best thing out there. Personally, I like Things, but I stuck to your criteria of cross-platform/mobile-supported To-do app.

Re: Chiming in on your own post

Thanks for posting about Fluid and Prism. There's nothing out of the ordinary about updating a post if you've found something interesting that answers the question. Part of what makes this site different from others is that you are encouraged to share your knowledge as well as ask questions. That's a great solution and something we're going to see a lot more of in the future.

I've used OmniFocus (OSX and iPhone) for the last year or more and have been very pleased. It syncs automatically at launch and shut down, has a clean interface, and some cool extras. It also comports very well to GTD.

One cool extra is tagging tasks or classes of tasks with locations. Say you're out and about and find you have 20 minutes to kill before your next appointment. OmniFocus can tell you what tasks are available nearby by tying your grocery list with nearby grocery stores, hardware lists with hardware stores, due library books with libraries, etc. It's pretty sharp. See screenshot attached.

Screencasts Online also has a free tutorial that's useful.

Best regards,

Rodney

I've been meaning to get going with Evernote for GTD, it has Mac, Windows, web, iphone, and Android clients, is free (at least the non desktop, up to 40MB a month uploaded), and it does a lot of nifty things for data capture (like ocr on all the photos you send it).

I'm not there yet, google both and you will get a bunch of links.

http://www.evernote.com/

I'll second Rodney's earlier recommendation for OmniFocus (http://www.omnigroup.com/omnifocus). It has a Mac and iPhone version which both work very nicely. Synching is a little kludgy unless you have MobileMe or a WebDAV server, though.

any recommendation for cross platform for windows7 - andriod device...?

I really like TiddlyWiki. It is just a single html file with some javascript magic. Put it in a dropbox folder or even a pen drive and use it everywhere you have a browser. Simple and effective.