Microsoft 365 vs RoundCube

Microsoft 365 is the more common of the two in our index: it runs on 23,354 websites against 9 for RoundCube. Counts come from real scans, not vendor claims.

Microsoft 365: 23,354
RoundCube: 9

Microsoft 365

Microsoft 365 is a line of subscription services offered by Microsoft as part of the Microsoft Office product line.

Indexed sites: 23,354
Share of Webmail: 65%

Well-known sites using it

google.com
cloudflare.com
microsoft.com
instagram.com
twitter.com
live.com

All 23,354 sites

RoundCube

RoundCube is free and open-source web-based IMAP email client.

Indexed sites: 9
Share of Webmail: 0%

Well-known sites using it

otenet.gr
beget.email
dhakacom.com
san.ru
serviciodecorreo.es
iol.ie

All 9 sites

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