Actionstep
CARET
Legal
Legal
CenterBase
Clio
(Built-in storage accessible with Clio Drive; several other integrations)
Two separate portals with different experiences (1 for clients; 1 for other external users (e.g. co-counsel))
Cosmolex
MyCase
Practice Panther
Rocket Matter
SmokeBall
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(Unlicensed)