Meta Search - Search your Desktop, Google Drive, Dropbox, Gmail, Evernote.
Tragofone - White-label VoIP Softphone with WebRTC and Auto-provisioning
Google Cloud Search - Search across all your company's content in G Suite.
PhonerLite - PhonerLite enables your PC to use it for internet telephony (VoIP , Voice over IP, SIP).
Vaultedge - Access all your documents in one place.
tSIP - tomeko.net/software: SIP client for Windows.