Original app: http://www.reddit.com/r/tf2trade/comments/1bdtbk/psa_mist_v400_has_been_released_with_a_major_ui/

The original Mist client only worked with TF2 items, in this build I've replaced it with Dota 2. (This means only Dota 2 items can be traded).

Changes so far:

• Compatible with Dota 2 (Not compatible with TF2/other Steam items, limitation of SteamBot)

• Support for Dota 2 item rarities.

• New backpack design for viewing. - This ties into the upcoming backpack management feature.

• Item counts in trade.^{Very dirty implementation, new one coming.}

TODO:

• Add backpack management.

• Add more details to items. (Currently missing effects, etc.)

Issues:

• Trades may randomly fail, you will have to retry. (I'm getting reports that trades outright don't work. Trying to fix. If the original Mist client works, ^wtf )

• Item attributes are not displayed yet.

• It might show disconnected from steam network while logging in, just wait for a bit while it retries.

• Things are breaking, trying to fix.

Due to the issues so far, I don't recommend using this for high-value trades.

Download v4.4.3 here. - Updates will be done by the application from now on.

Source over at GitHub.

Changelog:

v4.4.3

• Added item tooltips to backpack viewer.

• Added update checker.

• Added handling of errors that crash Mist.

v4.4.2

• Fixed several bugs.

v4.4.1

• Fixed errors with downloading schema with .Net 4.5

• Added error logging to trades.

• Added loading indicator to trades.

• Using dota 2 effect names

Old versions:

• Download v4.4.2 here.

• Download v4.4.1 here.

• Download v4.4.0 here | other mirrors.

Security concerns:

I do realize people might be wary of inputting their Steam account credentials on such an app, especially one that has been modified. I welcome other people to decompile the app/compile from source if you wish.