The following web-based applications work well across multiple devices from computers to tablets to phones. Some have available apps for particular devices while many simply run within a web browser.
Assessment Applications:
Infuse Learning
Socrative
Nearpod
Kahoot!
Testmoz
Poll Everywhere
Intel's Seeing Reason Tool
Intel's Visual Ranking Tool
Brainstorming:
AnswerGarden
Padlet
Data Collection and Collaboration:
Google Drive (forms feature)
Evernote
Bookmarking and Curation:
SymbalooEDU
LiveBinders
Presentations:
Blendspace
Curriculum:
CK-12
Communication:
Remind
Celly
Backchannel Chat
Today's Meet
Classroom Management (Elementary Grades):
Class Dojo
Website Creation:
Weebly for Education
Miscellaneous:
Goo.gl
QR Stuff
A Web Whiteboard
Infuse Learning
Socrative
Nearpod
Kahoot!
Testmoz
Poll Everywhere
Intel's Seeing Reason Tool
Intel's Visual Ranking Tool
Brainstorming:
AnswerGarden
Padlet
Data Collection and Collaboration:
Google Drive (forms feature)
Evernote
Bookmarking and Curation:
SymbalooEDU
LiveBinders
Presentations:
Blendspace
Curriculum:
CK-12
Communication:
Remind
Celly
Backchannel Chat
Today's Meet
Classroom Management (Elementary Grades):
Class Dojo
Website Creation:
Weebly for Education
Miscellaneous:
Goo.gl
QR Stuff
A Web Whiteboard