Yesterday's thread about DECUS and HP's OpenVMS hobbyist program opened a can of nostalgia worms so I remembered that my first laptop was a late-Digital era 11"-screen laptop with a pretty low-res screen (800x600, I think?).
I used ICQ on it and its interface was about as awkward as Skype's is today -- except today I'm running Skype on a laptop with about twice the screen estate. It's a little silly that all that research work in the industry -- and all that money I've paid -- went into screens that I now use just to display more whitespace.
I know it's supposed to help with touch screens but a) my laptop -- like most laptops currently in use -- doesn't have one and b) this isn't 1997 anymore, UI toolkits today make it trivial to adjust element sizes and paddings so that they're appropriate to whatever pointing device is currently in use.
That being said, the window in that screenshot is about 200 x 320 px. It would have taken about a third of the horizontal space of the screen, and about 2/3rds of the vertical space of a 640x480 screen. It was certainly usable -- way, way more usable than Skype on a full HD monitor today -- but lots of stuff was claustrophobic in 640x480.
(Then again, most modern apps are practically unusable if you resize their window to 640x480...)
Yes to Slack! Ask whoever manages your organization to enable XMPP or IRC gateway connection, then add the appropriate type of account to Trillian. You won't have access to rich cards or shared files from within Trillian, but you will be able to read and send messages to channels and individuals.
- status and visibility could be controlled for each contact at a granular level
- locally-stored, fully searchable chat history that gave results in a sensible manner and which you could migrate to new computers
- notification intrusiveness (ding, flash, etc) could be adjusted with one or two clicks
- dense UI (less whitespace meant more information packed into a smaller window that took up less of my screen)
- hitting X actually exited the program