1. Group communication
1.1. Yammer
1.2. Socialcast
1.3. Friendfeed
1.4. Campfire
1.5. Tgethr
1.6. Hashwork
1.7. Jaiku
1.8. Present.ly
1.9. Sharetronix
1.10. Socialwork
1.11. Status.net
2. Project Management
2.1. Basecamp
2.2. GroupMindExpress
2.3. 5pm
2.4. ActiveCollab
2.5. Staction
2.6. Daptiv
2.7. Task2Gather
2.8. Planyp.us
2.9. CoMindWork
2.10. Colabolo
2.11. eLoops
2.12. ClockingIT
2.13. Klok
2.14. PieMatrix
2.15. Teambox
2.16. Smartsheet
2.17. TaskPoint
2.18. ProjectManager
2.19. ProjectPlace
2.20. CollaborateCloud
2.21. ProofHub
2.22. TeamWork-Live
2.23. Wedoist
2.24. Teamwork-PM
2.25. Snipia
2.26. ProjectManager
2.27. Planio
2.28. BetterMeans
3. Collaborative Visual Reviewing
3.1. Backboard
3.2. Creately
3.3. A.nnotate
3.4. Diigo
3.5. uptogo
3.6. ReviewBasics
3.7. ConceptShare
3.8. Octopz
3.9. Textflow
3.10. inMotionNow.com
3.11. Cozimo
3.12. Workflow & Review
3.13. Friendpaste
3.14. ProofHQ
3.15. Colaab
3.16. Revizr
3.17. FuzeMeeting
3.18. Huddle.net
3.19. Oryx Editor - BPMN Community
3.20. Notable
3.21. The Commentor
3.22. Mocksup
3.23. ConceptFeedback
3.24. Pidoco
3.25. Bounce
3.26. Draftboardapp
4. Document Sharing - Wikis
4.1. Comindwork
4.2. pbwiki
4.3. WetPaint
4.4. wikidot
4.5. mediawiki
4.6. wikispaces.com
4.6.1. for teachers
4.7. GoogleDocs
4.8. GoogleSites
4.9. Socialtext
4.10. Zoho
4.11. mindtouch Deki
4.12. etherpad
4.13. Couchit
4.14. SocialText
4.15. Database Publishing
4.15.1. blist
4.15.2. Tablefy
4.15.3. Listphile
4.15.4. Dabble DB
4.16. Document Publishing
4.16.1. Scribd
4.16.2. Issuu
4.16.3. Scribd
4.16.4. Docstoc
4.16.5. Acrobat.com
4.16.6. TXTBear
4.17. source control
4.17.1. Subversion/Tortoise
4.18. KnowledgePlaza.be
4.19. Mixedink
4.20. Microsoft SharePoint
4.21. PBWiki
4.22. Microsoft Docs
4.23. Wepapers
5. WorkGrouping / Team Collaboration Workspaces
5.1. Zenbe
5.2. WizeHive
5.3. BantamLive
5.4. Broadchoice Workspace
5.5. WebOffice
5.6. BarCamps
5.7. Edmodo.com
5.7.1. Microblogging for Education
5.8. Affinitiz.com
5.8.1. Rooms for teams + external blog
5.9. Colaab
5.10. Sosius
5.11. Deskaway
5.12. Collaber
5.13. Campfire
5.14. CentralDesktop
5.15. GroupmindExpress
5.16. Ovosuite
5.17. Clearspace
5.18. Sosius
5.19. MyNetResearch
5.20. OneDrum
5.21. Onehub
5.22. Huddle.net
5.23. Ubidesk
5.24. HyperOffice
5.25. WizeHive
5.26. TeamApart
5.27. Ubidesk
5.28. Wiggio
5.29. FMYI
5.30. Collaboroo
5.31. GlassCubes
5.32. Kablink Teaming
5.33. Incipi
5.34. Threadbox
5.35. Engage
5.36. Zcope
5.37. Sambajam
5.38. CompanyConcert
5.39. CubeTree
5.40. Obayoo
5.41. Qontext
5.42. ContactOffice
6. Event Scheduling
6.1. eventbrite
6.2. Schedgit
6.3. GCalendar
6.4. Timebridge
6.5. any iCal app
6.6. Chandler
6.7. Amiando
6.8. Doodle.com
6.9. Genbook
6.10. AgreeAdate
6.11. MeetWithApproval
6.12. Cvent
6.13. Tungle
6.14. Shiftboard
6.15. ScheduleOnce
6.16. Zeeyoo
6.17. Appointment-Plus
7. File Sharing
7.1. Microsoft Live Mesh
7.2. Filedropper.com
7.3. Filemail.com
7.4. youSendIt
7.5. drop.io
7.6. transferbigfiles.com
7.7. box.net
7.8. Dropbox
7.9. senduit
7.10. 4shared.com
7.11. Virtual desktops
7.11.1. Jooce
7.12. Clip2Net
7.13. Spider Oak
7.14. Gigashift
7.15. Filephile
7.16. KnowledgePlaza.be
7.17. Esnips.com
7.18. Rapid Share
7.19. Wuala
7.20. iFolder
7.21. CloudApp
8. MindMapping & Diagramming
8.1. Creately
8.2. MindMeister
8.3. Bubbl.us
8.4. Mind42
8.5. Mywebspiration
8.6. Spinscape
8.7. Gliffy
8.8. LucidCharts
8.9. Xmind
8.10. SpicyNodes
8.11. Creately
8.12. MindJet Catalyst
8.13. Comapping
8.14. Cacoo
8.15. ThinkFold
8.16. Mindomo
8.17. Ideatree
8.18. Edistorm
8.19. Slatebox
8.20. CoSketch
9. Collaborative Writing
9.1. Buzzword
9.2. Zoho Writer
9.3. Writeboard
9.4. Google Docs
9.5. Quicktopic
9.6. SynchroEdit
9.7. Gobby
9.8. Etherpad
9.9. TextFlow
9.10. WriteWith
9.11. ThinkFold
9.12. Springloops
9.12.1. for coders
9.13. Mixedink
9.14. PrimaryPad
9.15. Wridea
9.16. TitanPad
9.17. Sync.in
9.18. Solodox
9.19. J2e
9.20. entri.co
9.21. TypeWithMe
10. Private Social Networking Platforms
10.1. Googlegroups
10.2. YahooGroups
10.3. Ning
10.4. Groupsite
10.5. grouply
10.6. SocialGo
10.7. Memberhub
10.8. Qlubb
10.9. Spruz
10.10. Grou.ps
10.11. Bigtent
10.12. meetup
10.13. Friendfeed
11. TO SEE TOOL NAMES, click on the '+' next to each category
12. Chat
12.1. Userplane
12.2. Tinychat
12.3. CampFire
12.4. Meebo
12.5. Zoho Chat
12.6. Chatterous
12.7. Google Wave
12.8. Donutchat
12.9. ISL Pronto
12.10. 99Chats
12.11. Nurph
12.12. Hipchat
12.13. NeatChat
12.14. Stinto
12.15. Chatzi
12.16. Wireclub
12.17. BabelwithMe
12.18. DonutChat
12.19. GixawChat
12.20. TodaysMeet
12.21. Dropio Chat
12.22. Backnoise
12.23. Talker
13. VoIP - Audio Conferencing
13.1. Skype
13.2. ooVoo
13.3. Voxox
13.4. JahJah
13.5. REBTEL
13.6. GTalk
13.7. Vyke
13.8. Gizmo5
13.9. Voxli
13.10. Voxopop
13.11. Powwownow
14. Large Audience Webinars - 100+ participants
14.1. Gatherplace
14.2. Adobe Connect Pro
14.3. GoToWebinar
14.4. iVocalize.com
14.5. HotConference.com
14.6. Wiziq
14.7. TokBox Broadcast Video Chat
14.8. DimDim Enterprise
14.9. WebEx Event Center
14.10. Freebinar
14.11. Clickwebinar
14.12. FuzeMeeting Pro
14.13. GoMeetNow
15. Video Conferencing
15.1. Video-Chat
15.1.1. Gchat
15.1.2. Rounds
15.2. VuRoom
15.3. TokBox
15.4. Oovoo
15.5. Sightspeed
15.6. VSee
15.7. Mebeam
15.8. Flashmeeting
15.9. EyeJot
15.10. DoVisio
15.11. APideo
15.12. XyKast
15.13. Palbee
15.14. Scopia Desktop
15.15. Meeting24
15.16. Persony
15.17. InstantPresenter
15.18. Tinychat
15.19. HP SkyRoom
15.20. Wetoku
15.21. VisionKontakt
15.22. ViVu
15.23. Zorap
15.24. Mirial ClearSea
15.25. TokBox Broadcast Video Chat
15.26. eMeetPlus
15.27. Glide
15.28. Thinsy
15.29. Ekiga
15.30. VuRoom
15.31. Chatride
15.32. Meeting24
15.33. Goober
15.34. Skype
15.35. AttendAnywhere
15.36. iWowWe
15.37. ViVicom-ViFree
15.38. LiveCage
15.39. Nefsis
15.40. VideoPort
15.41. Auralink
16. Instant Messaging
16.1. Skype
16.2. AOL IM
16.3. Meebo
16.4. eBuddy
16.5. Yahoo Messenger
16.6. Google chat and video
16.7. ICQ
16.8. Windows Live Messenger
16.9. Jabber
16.10. BigAnt
17. Screen-Sharing
17.1. GoToMeeting
17.2. eBLVD
17.3. ConnectNow
17.4. Microsoft Shared View
17.5. Yuuguu
17.6. WebExNow
17.7. LiveLook
17.8. Vyew
17.9. Crossloop
17.10. Glance
17.11. Yugma
17.12. Teamviewer
17.13. BeamYourScreen
17.14. Remote Control
17.14.1. GoToAssist
17.14.2. RealVNC
17.14.3. GoToMyPC
17.14.4. logmein
17.14.5. Teamviewer
17.14.6. TightVNC
17.14.7. LiveLook CoBrowsing
17.14.8. Proxy Pro6
17.14.9. Skyfex
17.14.10. Techinline
17.14.11. ScreenConnect
17.14.12. IminTouch
17.14.13. ISL Light
17.14.14. SupportSmith
17.14.15. ScreenConnect
17.14.15.1. PC software
17.15. Acrobat.com
17.16. Netviewer
17.17. Mikogo
17.18. Gogrok
17.19. PocketMeeting
17.20. Oneeko (Skype plugin)
17.21. Present.io
17.22. ShowDocument
17.23. Dynno
17.24. GoGrok
17.25. SaviiDesk
17.26. Join.me
18. Web Conferencing
18.1. WebEx
18.2. Elluminate
18.3. Wimba Classroom
18.4. DigitalSamba (free for 3)
18.5. Centra
18.6. Elluminate VRoom (free for 3)
18.7. Adobe Connect Now (free for 3)
18.8. WebTrain (free for 2)
18.9. iVocalize
18.10. DimDim (free for up to 20 people)
18.11. Spreed
18.12. WebHuddle
18.13. Convenos
18.14. Zoho Meeting
18.15. Acrobat.com
18.16. OpenHuddle
18.17. Microsoft Live Meeting
18.18. iLinc
18.19. Netspoke
18.20. Genesys
18.21. Omnovia
18.22. ReadyTalk
18.23. e-Lecta
18.24. Hypermeeting
18.25. Live Conference PRO.com
18.26. Expressway Flexchat
18.27. WebConference.com
18.28. DoConference
18.29. Nefsis
18.30. OpenMeetings
18.31. vMukti MeetingPlace
18.32. OpenConference
18.33. Wiggio
18.34. VeriShow
18.35. ISL Groop
18.36. Kablink Conferencing
18.37. BigBlueButton
18.37.1. open-source
18.37.2. Mac, PC, Unix
18.38. IBM Lotus LiveEngage
18.39. Sococo
18.40. OpenMeetings
18.41. TeamApart
18.42. FlashMeeting
18.43. Visionkontact
18.44. InnerPass
18.44.1. works with Skype
18.45. ImInTouch-Meeting
18.46. Formeeting
18.47. Sococo
18.48. GVOConference
18.48.1. spammy MLM
18.49. Wiggio
18.50. Clickmeeting
18.51. Banckle
18.52. GoMeetNow
19. Co-browsing
19.1. Clavardon
19.2. Holoday
19.3. PageShare
19.4. Showdocument
19.5. Wizlite - Page highlighting
19.5.1. asynchronous
19.6. Twiddla
20. Web Presenting
20.1. Slideshare
20.2. SlideRocket
20.3. woices.com
20.4. PresenterNet.com
20.5. InstantPresenter
20.6. Vcasmo
20.7. 280 Slides
20.8. Livemeetups
20.9. Freepath
20.10. Mightymeeting
20.11. ZohoShow
20.12. Multimedia Presentations
20.12.1. Vuvox
20.12.2. Animoto
20.12.3. OneTrueMedia
20.12.4. Scrapblog
20.12.5. bubbleshare
20.12.6. Voice Thread
20.12.7. Zentation
20.12.8. Present.io