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Google Apps vs Slack vs Trello System Properties Comparison

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Editorial information provided by Project Management Zone
NameGoogle Apps  Xexclude from comparisonSlack  Xexclude from comparisonTrello  Xexclude from comparison
DescriptionGoogle Apps are a collection of web-based communication and collaboration services.Slack is a web-based platform for team communication.Trello is a web-based project management and collaboration tool based on Kanban-like lists.
CategoryProject Collaboration, ranked #2Project Collaboration, ranked #11Project Planning, ranked #5
Project Collaboration, ranked #4
DeveloperGoogleSlack TechnologiesTrellooriginally Fog Creek Software
Websitegoogle.com/­enterprise/­apps/­businessslack.comtrello.com
Technical documentationsupport.google.com/­a/­?hl=en#topic=29157help.trello.com
Social network pages
Google+4,668,795followers
LinkedIn12,000followers
Twitter659,794followers
Facebook26,737likes
LinkedIn27,217followers
Twitter199,586followers
Facebook62,895likes
Google+25,483followers
LinkedIn5,275followers
Twitter106,414followers
Initial release200620132011
LicenseWeb-based service (SaaS)Web-based service (SaaS)Web-based service (SaaS)
Web-based architectureyesyesyes
Mobile appsAndroid
iOS
Android
iOS
Android
iOS
APIyesyesHTTP RPC-style methodsyesREST
Multi-useryesyesyes
User rolesyesuser groupsyespredefined rolesno
Authentication mechanismPassword
Google sign-on
Phone verification
PasswordPassword
Google sign-on
NotificationsEmailEmail
Mobile push
Email
Mobile push
Project Planning Properties
Hierarchical tasksno
Recurring tasksno
Milestone trackingno
Task dependenciesno
Critical path managementno
Critical chain managementno
Gantt chartsno
Pert chartsno
Baselinesno
Resource managementno
Resource levelingno
Time trackingno
Cost trackingno
Earned value managementno
Risk managementno
Scrum supportno
Kanban supportyes
Project portfolio management no
Project Collaboration Properties
Project wikinonono
Discussion forumnoyesyesconversations
Online chatyesyesno
Audio conferencingyesnono
Video conferencingyesnono
Screen sharingyesnono
Calendar sharingyesnoyesintegration with external calendar tools is possible
Contact sharingyesavailable via 3rd-party add-onnono
Document sharingyesyesyescard attachments
File versioningyesnono
More Resources
Google AppsSlackTrello
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