Stack Lookup
Get a free key

Category answer

Productivity and Email Suites

8,549,003

companies run at least one of the 26 technologies in it, 15.7% of 54,527,857 in the index. Landing 12 Sept 2026.

Workspace suites and corporate email (webmail, MX-based).

The subcategories

Companies running any technology in eachof 8,549,003 in Productivity and Email Suiteslanding 12 Sept 2026

A company running technologies in two subcategories is counted in both, so the shares do not sum to 100%

The 4 subcategories in this chart
SubcategoryCompaniesShare of the category
Productivity and collaboration suites8,146,30895.3%
Webmail client software423,4315.0%
Business email hosting24,2510.28%
Email server software46<0.01%

The technologies ranked in Productivity and Email Suites

Companiesof 8,549,003 with any of themlanding 12 Sept 2026

#
Technology
Vendor
Companies
Share
1
Google
4,064,143
47.5%
2
Microsoft
3,974,228
46.5%
3
Roundcube
409,437
4.8%
4
Microsoft
62,596
0.73%
5
Proton AG
60,816
0.71%
6
Zoho Corporation
16,047
0.19%
7
Microsoft
11,074
0.13%
8
Google
5,089
0.06%
9
RainLoop
2,553
0.03%
10
Open-Xchange AG
1,400
0.02%
11
Microsoft
1,114
0.01%
12
SquirrelMail Project
578
<0.01%
13
Microsoft
385
<0.01%
14
Microsoft
161
<0.01%
15
Microsoft
91
<0.01%
16
Microsoft
76
<0.01%
17
CrossBox
44
<0.01%
18
Micro Focus (OpenText)
2
no share
19
SmarterTools
1
no share
20
NetWin Ltd
1
no share
21
OpenText
0
no share
22
Apple
0
no share
23
Tobit Software
0
no share

23 of 26 technologiesa company running two of them is counted in both, so the shares do not sum to 100%under 20 companies no share is published

3 of the 10 most detected technologies here sit under the publication gate on detector quality of 0.90, so they are listed rather than ranked: Apple iCloud Mail 256,749, Zimbra 8,127, Locaweb Mail 8,044.