Meta Search - Search your Desktop, Google Drive, Dropbox, Gmail, Evernote.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Vaultedge - Access all your documents in one place.
Bigtent - BigTent is a web-based organization and communication portal for groups.
Google Cloud Search - Search across all your company's content in G Suite.
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.