Project Collaboration Tools

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Category	Project Planning (9) Issue Management (4) Project CollaborationXexclude from selection
License	Open Source (3) Commercial (4) Web-based service (SaaS) (12)
Programming language	C# (1) Groovy (1) Java (1) PHP (2) Ruby (1)
Operating systems	HP-UX (1) Linux (4) OS X (2) Solaris (1) Unix (1) Windows (3)
Mobile apps	Android (7) BlackBerry (1) iOS (8)
Authentication mechanism	Password (13) LDAP (6) SAML (3) NTLM (1) CAS (2) JAAS (1) JOSSO (1) OpenSSO (1) Active Directory (2) Amazon sign-on (1) Disqus sign-on (1) Facebook sign-onXexclude from selection GitHub sign-on (1) Google sign-on (11) LinkedIn sign-on (6) Microsoft sign-on (2) Persona sign-on (1) Twitter sign-on (6) Viadeo sign-on (1) Yahoo sign-on (1) Phone verification (1)
Notifications	Desktop push (3) Email (13) Mobile push (1) RSS feeds (2) SMS (1)
Features	Web-based architecture (13) API (8) Multi-user (13) User roles (8) Project wiki (7) Discussion forum (10) Online chat (10) Audio conferencing (6) Video conferencing (5) Screen sharing (5) Calendar sharing (10) Contact sharing (8) Document sharing (12) File versioning (9)

13 project management systems with the selected characteristics.
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