In our company almost everyone uses Skype for voice. But that also means adding contacts for everyone you want to talk to, so it's not really a company standard.

We use IM extensively and have a public (as in 'on the open net') Jabber server. If you have an account here, you'll automatically have the whole company at your disposal.

We also have conference rooms for collaboration and a bunch of bots operating here. If you're in software, you'll have access to the dev room, for example. All the build information and unit test results get dumped there. Conference rooms are also great for a-synchronous group communication.

The main office has a high speed data link and you can connect to it via OpenVPN. This gives you access to the code repositories, testing databases (mainly for projects), wikis and other stuff depending on your profile.

Oh, yeah, we use email too :) But that's mostly for announcements, long-running discussions and communicating with third-parties.

I've used gotomeeting on my virtual windows machine for going through some project-specific details. Voice still goes through Skype.

IRC is great for a couple of developers on a private channel, but generally sucks for running a project or a company with non-techies. Run your own XMPP server.

Disciplined coding ninjas are rare. Use a centralized source repository and have everyone commit to that. We use SVN and with trac on top of it, it's a win situation all 'round. People that want to use git can use git-svn. (If you have developers complaining about SVN and not being able to use git-svn, you shouldn't have them committing in the first place).

Wikis (especially those from trac with integration with your source code) are a really good way to document some knowledge.

IRC, Email, Git :)

Hey! You should definitely use Voxli (disclaimer: this is a shameless plug since I'm a cofounder). We're easy to use web based voice chat.

1) You get your own URL so you don't need to conference call people in each time.

2) We're client-server, so you can have tons of people in each conference room

3) We're free since we're in beta =)

https://voxli.com

In order of importance: IM, skype, email, phone conference, trac, wiki, yammer (just starting)

Ironically, most valuable collaboration/project management tools are "generic" like im, voice, email as oppose to those designed specifically for collaboration/project management.

I also recommend GoToMeeting. It's indispensable for team meetings, real time collaboration, and demonstrations. It'll set you back $50 a month, but is leaps and bounds ahead of their competition and vastly cheaper.

Skype, IM (usually Yahoo! since it supports offline messages), Basecamp (less than I used to), Google Docs, email, and Senduit for sending large files back and forth.

Present.ly, Google Apps, Skype, Unfuddle.

Socialcast, Campfire, and Google Docs.

Skype, CentralDesktop, DabbleBoard

IM, Skype, Google docs & spreadsheets, pbwiki (more organized docs than google), gmail

Something that implements a chat voice and screen sharing in order to hack together on the same source code? It's basically Mac OS X "screen sharing", but I need something that runs on Linux. Btw Mac's screen sharing is an impressive tool to work together.

Try gnu screen + vim/emacs/nano

If you think skype + screen -x is a replacement for Mac OS X screen sharing you should really try it. It's more like Skype + VNC, but a VNC that works much better.

This is the working pattern, you and the other side both see the same screen and can type and use the cursor at the same time, while doing high quality voice chat. So you have for example a terminal with vi opened and code while talking, then open Firefox to reload and check what happened to the application after the modifications and so on.

All this very fluid under a common DSL line. It's almost like being on the same room.

Skype, MediaWiki, Trac, code reviewer, Gmail, Google Docs.

realXtend (http://www.realxtend.org) for virtual meetings and scrum, skype, google docs

Campfire, GTalk, Windows Messenger, Crucible, JIRA

Redmine, Basecamp, Google Docs, IM, Email, Skype.

Confluence, Jira, Campfire, SVN, Email, IM

iChat, Skype, Swirrl, email

Redmine, Google Apps, Skype

Acunote, Skype, Google App

skype, campfire, github, redmine, email, yugma (for screensharing)

Skype, Redmine, Email

IRC, Trac, Email.

codebase, gmail, google sites.

pivotal tracker,email,gchat