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
1.12. Tibbr
1.13. Chatter
1.14. Convofy
1.15. Podio
1.16. Tadagraph
1.17. Qontext
1.18. OffBureau
1.19. Open Atrium
1.20. FlowDock
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. Smartsheet
2.16. TaskPoint
2.17. ProjectManager
2.18. ProjectPlace
2.19. CollaborateCloud
2.20. ProofHub
2.21. TeamWork-Live
2.22. Wedoist
2.23. Teamwork-PM
2.24. Snipia
2.25. ProjectManager
2.26. Planio
2.27. BetterMeans
2.28. activeCollab
2.29. ProjectCurf
2.30. Freedcamp
2.31. Reverb
2.32. Unfuddle
2.33. Collabtive
2.34. VKolab
2.35. Scadaplan
2.36. Tadagraph
2.37. Flow
2.38. Binfire
2.39. Projektino
2.40. ApolloHQ
2.41. Fluff-Less
2.42. PivotalTracker
2.43. Asana
2.44. AtTask
2.45. CoHuman
2.46. Agilezen
2.47. Viadesk
2.48. Wunderkit
2.49. Trello
2.50. LumoFlow
2.51. Open Source
2.51.1. Teamlab
2.51.2. Teambox
2.51.3. Trac
2.51.4. Redmine
2.51.5. ProjectHQ
2.51.6. KForgeProject
2.51.7. ProjectPier
2.51.8. ToDoYou
2.51.9. eGroupware
2.51.10. Plancake
2.51.11. Retrospectiva
3. Chat
3.1. Userplane
3.2. Tinychat
3.3. CampFire
3.4. Meebo
3.5. Zoho Chat
3.6. Chatterous
3.7. Google Wave
3.8. Donutchat
3.9. ISL Pronto
3.10. 99Chats
3.11. Nurph
3.12. Hipchat
3.13. NeatChat
3.14. Stinto
3.15. Chatzi
3.16. Wireclub
3.17. BabelwithMe
3.18. DonutChat
3.19. GixawChat
3.20. TodaysMeet
3.21. Dropio Chat
3.22. Backnoise
3.23. Talker
3.24. Jitsi
3.24.1. Open Source
4. VoIP - Audio Conferencing
4.1. Skype
4.2. ooVoo
4.3. Voxox
4.4. JahJah
4.5. REBTEL
4.6. GTalk
4.7. Vyke
4.8. Gizmo5
4.9. Voxli
4.10. Voxopop
4.11. Powwownow
5. Large Audience Webinars - 100+ participants
5.1. Gatherplace
5.2. Adobe Connect Pro
5.3. GoToWebinar
5.4. iVocalize.com
5.5. HotConference.com
5.6. Wiziq
5.7. TokBox Broadcast Video Chat
5.8. DimDim Enterprise
5.9. WebEx Event Center
5.10. Freebinar
5.11. Clickwebinar
5.12. FuzeMeeting Pro
5.13. GoMeetNow
5.14. Vokle
5.15. AudioVideoConference
5.16. Slideshare Zipcast
5.17. GlobalMeet
5.17.1. screen sharing, presentations, video pro interface - $39/mo flat for up to 125 attendees
5.18. Lotus Live
5.18.1. Give a webinar using the LotusLive Events software. Features include event management tools, automated email services, integrated instant messaging, mobile access, and live polling. LotusLive Event can host meetings with up to 1,000 participants, with plans starting as low as $79 per month. For up to 15 attendees, use LotusLive Meeting at $39 per month. Free for 60 days.
5.19. Omnovia
5.20. ReadyTalk
5.21. Yugma
5.22. Microsoft Live Meeting
5.23. MeetingBurner
5.24. YourOfficeAnywhere
5.24.1. up to 200 participants
5.25. AnyMeeting
5.25.1. up to 200 participants
5.26. BigMarker
5.26.1. free
5.27. StartMeeting
6. Video Conferencing
6.1. Video-Chat
6.1.1. Gchat
6.1.2. Rounds
6.2. VuRoom (Acquired by Polycom)
6.3. TokBox
6.4. Oovoo
6.5. Sightspeed
6.6. VSee
6.7. Mebeam
6.8. Flashmeeting
6.9. EyeJot
6.10. DoVisio
6.10.1. web-based free
6.11. APideo
6.11.1. Apideo is an API that lets you embed live video streams and manage events on your website.
6.12. XyKast
6.12.1. SW-mac/pc/linux FREE
6.13. Palbee Dead
6.13.1. RIP
6.14. Scopia Desktop
6.14.1. Free Trial
6.15. Persony
6.16. InstantPresenter
6.17. Tinychat
6.18. HP SkyRoom Dead
6.19. Wetoku Dead
6.20. VisionKontakt Dead
6.20.1. FREE - web-based
6.21. ViVu Acquire Policom
6.22. Zorap Dead
6.22.1. dead
6.23. Mirial ClearSea
6.24. eMeetPlus
6.25. Glide
6.26. Thinsy Dead
6.26.1. FREE Win
6.27. Ekiga
6.27.1. Open-Source
6.28. Chatride
6.29. Meeting24 Dead
6.30. Goober
6.31. Skype
6.32. AttendAnywhere
6.33. iWowWe
6.34. ViVicom-ViFree Dead
6.35. LiveCage
6.36. Nefsis
6.37. VideoPort
6.38. Auralink
6.39. Faceflow
6.40. Q-Next
6.41. Sifonr
6.42. SocialEyes
6.43. NetConference
6.44. Worldvuer
6.45. iMeet
6.46. Vidquik
6.46.1. one-to-one
6.47. Vidtel
6.47.1. cloud-based
6.47.2. no free trial - no public pricing
6.48. Dozeo
6.49. SimpleMeetup
7. Instant Messaging
7.1. Skype
7.2. AOL IM
7.3. Meebo
7.4. eBuddy
7.5. Yahoo Messenger
7.6. Google chat and video
7.7. ICQ
7.8. Windows Live Messenger
7.9. Jabber
7.10. BigAnt
7.11. Q-Next
7.11.1. Software PC, Mac, Linux
8. Screen-Sharing
8.1. GoToMeeting
8.2. eBLVD
8.3. ConnectNow
8.4. Microsoft Shared View
8.5. Yuuguu
8.6. WebExNow
8.7. LiveLook
8.8. Vyew
8.9. Crossloop
8.10. Glance
8.11. Yugma
8.12. Teamviewer
8.13. BeamYourScreen
8.14. Remote Desktop / Control
8.14.1. GoToAssist
8.14.2. RealVNC
8.14.3. GoToMyPC
8.14.4. logmein
8.14.5. Teamviewer
8.14.6. TightVNC
8.14.7. LiveLook CoBrowsing
8.14.8. Proxy Pro6
8.14.9. Skyfex
8.14.10. Techinline
8.14.11. ScreenConnect
8.14.12. IminTouch
8.14.13. ISL Light
8.14.14. SupportSmith
8.14.15. ScreenConnect
8.14.15.1. PC software
8.14.16. Banckle
8.14.17. Chrome Remote Desktop
8.14.18. CoPilot
8.15. Acrobat.com
8.16. Netviewer
8.17. Mikogo
8.18. Gogrok
8.19. PocketMeeting
8.20. Oneeko (Skype plugin)
8.21. Present.io
8.22. ShowDocument
8.23. Dynno
8.24. GoGrok
8.25. SaviiDesk
8.26. Join.me
8.27. Micemeeting
8.28. FreeScreenSharing
8.29. YamLabs
9. Collaborative Visual Reviewing
9.1. Backboard
9.2. Creately
9.3. A.nnotate
9.4. Diigo
9.5. uptogo
9.6. ReviewBasics
9.7. ConceptShare
9.8. Octopz
9.9. Textflow
9.10. inMotionNow.com
9.11. Cozimo
9.12. Workflow & Review
9.13. Friendpaste
9.14. ProofHQ
9.15. Colaab
9.16. Revizr
9.17. FuzeMeeting
9.18. Huddle.net
9.19. Oryx Editor - BPMN Community
9.20. Notable
9.21. The Commentor
9.22. Mocksup
9.23. ConceptFeedback
9.24. Pidoco
9.25. Bounce
9.26. Draftboardapp
9.27. Cageapp
9.28. Flauntkit
9.29. Conceptboard
9.30. CreationFlow
9.31. Groupzap
10. Web Conferencing
10.1. WebEx
10.2. Elluminate
10.3. Wimba Classroom
10.4. DigitalSamba (free for 3)
10.5. Centra
10.6. Elluminate VRoom (free for 3)
10.7. Adobe Connect Now (free for 3)
10.8. WebTrain (free for 2)
10.9. iVocalize
10.10. DimDim (free for up to 20 people)
10.11. Spreed
10.12. WebHuddle
10.13. Convenos
10.14. Zoho Meeting
10.15. Acrobat.com
10.16. OpenHuddle
10.17. Microsoft Live Meeting
10.18. iLinc
10.19. Netspoke
10.20. Genesys
10.21. Omnovia
10.22. ReadyTalk
10.23. e-Lecta
10.24. Hypermeeting
10.25. Live Conference PRO.com
10.26. Expressway Flexchat
10.27. WebConference.com
10.28. DoConference
10.29. Nefsis
10.30. OpenMeetings
10.31. vMukti MeetingPlace
10.32. OpenConference
10.33. Wiggio
10.34. VeriShow
10.35. ISL Groop
10.36. Kablink Conferencing
10.37. BigBlueButton
10.37.1. open-source
10.37.2. Mac, PC, Unix
10.38. IBM Lotus LiveEngage
10.39. Sococo
10.40. OpenMeetings
10.41. TeamApart
10.42. FlashMeeting
10.43. Visionkontact
10.44. InnerPass
10.44.1. works with Skype
10.45. ImInTouch-Meeting
10.46. Formeeting
10.47. Sococo
10.48. GVOConference
10.48.1. spammy MLM
10.49. Wiggio
10.50. Clickmeeting
10.51. Banckle
10.52. GoMeetNow
10.53. Digitell
10.54. BigMarker
10.55. AffordableWebMeetings
10.56. NetConference
10.57. Apptix
10.58. GlobalMeet
10.58.1. screen sharing, presentations, video pro interface - $39/mo flat for up to 125 attendees
10.59. Megameeting
10.60. LiveMinutes
10.61. FreeScreenSharing
10.62. AnyMeeting
11. Document Sharing - Wikis
11.1. Comindwork
11.2. pbwiki
11.3. WetPaint
11.4. wikidot
11.5. mediawiki
11.6. wikispaces.com
11.6.1. for teachers
11.7. GoogleDocs
11.8. GoogleSites
11.9. Socialtext
11.10. Zoho
11.11. mindtouch Deki
11.12. etherpad
11.13. Couchit
11.14. SocialText
11.15. Database Publishing
11.15.1. blist
11.15.2. Tablefy
11.15.3. Listphile
11.15.4. Dabble DB
11.16. Document Publishing
11.16.1. Scribd
11.16.2. Issuu
11.16.3. Scribd
11.16.4. Docstoc
11.16.5. Acrobat.com
11.16.6. TXTBear
11.17. source control
11.17.1. Subversion/Tortoise
11.18. KnowledgePlaza.be
11.19. Mixedink
11.20. Microsoft SharePoint
11.21. PBWiki
11.22. Microsoft Docs
11.23. Wepapers
11.24. Sugarsync
12. Co-browsing
12.1. Clavardon
12.2. Holoday
12.3. PageShare
12.4. Showdocument
12.5. Wizlite - Page highlighting
12.5.1. asynchronous
12.6. Twiddla
12.7. Go-Instant
13. Web Presenting
13.1. Slideshare
13.2. Slidestaxx
13.3. SlideShare Zipcast
13.4. SlideRocket
13.5. woices.com
13.6. PresenterNet.com
13.7. InstantPresenter
13.8. Vcasmo
13.9. 280 Slides
13.10. Livemeetups
13.11. Freepath
13.12. Mightymeeting
13.12.1. supports iPhone/iPad
13.13. ZohoShow
13.14. Multimedia Presentations
13.14.1. Vuvox
13.14.2. Animoto
13.14.3. OneTrueMedia
13.14.4. Scrapblog
13.14.5. bubbleshare
13.14.6. Voice Thread
13.14.7. Zentation
13.14.8. Present.io
13.14.9. ProjectQ
13.15. Kineticast
13.16. MyPlick
13.17. Live Present
13.18. SlidePresenter
13.19. Slide-Casts
13.20. My-Slide-Presenter
13.21. KnowledgeVision
13.22. CrunchConnect
13.23. Reel
14. WorkGrouping / Team Collaboration Workspaces
14.1. Zenbe
14.2. WizeHive
14.3. BantamLive
14.4. Broadchoice Workspace
14.4.1. dead
14.5. WebOffice
14.6. BarCamps
14.7. Edmodo.com
14.7.1. Microblogging for Education
14.8. Affinitiz.com
14.8.1. Rooms for teams + external blog
14.9. Colaab
14.10. Sosius
14.11. Deskaway
14.12. Collaber
14.13. Campfire
14.14. CentralDesktop
14.15. GroupmindExpress
14.16. Ovosuite
14.17. Clearspace
14.18. Sosius
14.19. MyNetResearch
14.20. OneDrum
14.21. Onehub
14.22. Huddle.net
14.23. Ubidesk
14.24. HyperOffice
14.25. WizeHive
14.26. TeamApart
14.27. Ubidesk
14.28. Wiggio
14.29. FMYI
14.30. Collaboroo
14.31. GlassCubes
14.32. Kablink Teaming
14.33. Incipi
14.34. Threadbox
14.35. Engage
14.36. Zcope
14.37. Sambajam
14.38. CompanyConcert
14.39. CubeTree
14.40. Obayoo
14.41. Qontext
14.42. ContactOffice
14.43. Teambox
14.44. Humanedj
14.45. EnterTheGroup
14.46. TeamLab
14.47. Kerio
14.48. Projecktino
14.49. Kickoff
14.50. OffBureau
14.51. Lumoflow
14.52. TeamWox
15. Event Scheduling
15.1. eventbrite
15.2. GCalendar
15.3. Timecenter
15.4. Timebridge
15.5. any iCal app
15.6. Chandler
15.7. Amiando
15.8. Doodle.com
15.9. Genbook
15.10. AgreeAdate
15.11. MeetWithApproval
15.12. Cvent
15.13. Tungle
15.14. Shiftboard
15.15. ScheduleOnce
15.16. Zeeyoo
15.17. Appointment-Plus
15.18. Skedgememe
15.19. Dead Pool
15.19.1. Schedgit
15.20. Meetin.gs
15.21. TimeToMeet
16. File Sharing
16.1. Microsoft Live Mesh
16.2. Filedropper.com
16.3. Filemail.com
16.4. youSendIt
16.5. drop.io
16.6. transferbigfiles.com
16.7. box.net
16.8. Dropbox
16.9. senduit
16.10. 4shared.com
16.11. Virtual desktops
16.11.1. Jooce
16.12. Clip2Net
16.13. Spider Oak
16.14. Gigashift
16.15. Filephile
16.16. KnowledgePlaza.be
16.17. Esnips.com
16.18. Rapid Share
16.19. Wuala
16.20. iFolder
16.21. CloudApp
16.22. SkyDox
17. Whiteboarding
17.1. Dabbleboard
17.2. Skrbl
17.3. Vyew
17.4. Ge Inspiration Cubed
17.5. Depicto
17.6. Twiddla
17.7. Scriblink
17.8. Groupboard
17.9. Scribblar
17.10. ShowDocument
17.11. Flowchart
17.12. Virtual whiteboard
17.13. Google Drawings
17.14. Skrbl
17.15. Co-Sketch
17.16. Conceptboard
17.17. Scriblink
17.18. Idroo
17.19. Stixy
18. MindMapping & Diagramming
18.1. TheBrain
18.2. Creately
18.3. MindMeister
18.4. Bubbl.us
18.5. Mind42
18.6. Mywebspiration
18.7. Spinscape
18.8. Gliffy
18.9. LucidCharts
18.10. Xmind
18.11. SpicyNodes
18.12. Creately
18.13. MindJet Catalyst
18.14. Comapping
18.15. Cacoo
18.16. ThinkFold
18.17. Mindomo
18.18. Ideatree
18.19. Edistorm
18.20. Slatebox
18.21. CoSketch
18.22. My.Origramy
19. Collaborative Writing
19.1. Buzzword
19.2. Zoho Writer
19.3. Writeboard
19.4. Google Docs
19.5. Quicktopic
19.6. SynchroEdit
19.7. Gobby
19.8. Etherpad
19.9. TextFlow
19.10. WriteWith
19.11. ThinkFold
19.12. Springloops
19.12.1. for coders