Picasa: Smug Mug/Flickr is rather highly valuated again today, now that they are free of the curse of Yahoo! Instagram and Snapchat are a part of this game now too.
Google Code: GitHub sold to Microsoft for a good chunk of change. GitLab, Bitbucket, Source Hut, all seem to be doing fine.
Hangouts: Instagram, Snapchat, Facebook Messenger, WhatsApp, WeChat, Facebook Portal, Matrix/Riot.im, iMessage, Skype is maybe back from the dead depending on who you ask (certainly not kids, though). It's almost easier to ask who isn't in the Messenger game right now. The fact that Google managed to fumble two huge market share leads between Google Talk and Hangouts is maybe only equaled by Microsoft's multiple, complicated fumbles of MSN Messenger and Skype.