Callsign competitorsClear all

Callsign's top competitors include Clear, SecureAuth and OneSpan.
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Callsign
Callsign
Сallsign provides secure and seamless authentication experience for enterprises and users.
Clear
Clear
Clear is a high speed mobile internet service that provides flexible 4G wireless internet access for web-enabled devices.
SecureAuth
SecureAuth
SecureAuth is the leader in adaptive access control solutions, to determine identities with confidence.
OneSpan
OneSpan
OneSpan (formerly VASCO Data Security International) is a publicly-traded cybersecurity technology company.
Founding Date
Founding Date
2012
Founding Date
2003
Founding Date
2006
Founding Date
1991
Type
Type
Private
Type
Public
Type
Private
Type
Public
Tags
Locations
Locations
London, GB HQ
Palo Alto, US
Locations
New York, US HQ
Locations
Irvine, US HQ
Bmi, AR
Greater London, GB
Chicago, US
Irving, US
Menlo Park, US
New York, US
see more
Locations
Chicago, US HQ
Sydney, AU
Brussel, BE
Montréal, CA
Chiyoda City, JP
Zürich, CH
see more
Employees
Employees
2894% increase
Employees
1,646
Employees
2223% decrease
Employees
7442% increase
Valuation ($)
Valuation ($)
N/A
Valuation ($)
3.2 b
Valuation ($)
N/A
Valuation ($)
829.9 m
Twitter followers
Twitter followers
862
Twitter followers
22.5 k
Twitter followers
9.1 k
Twitter followers
3.2 k
Number of tweets (last 30 days)
Number of tweets (last 30 days)
39
Number of tweets (last 30 days)
117
Number of tweets (last 30 days)
28
Number of tweets (last 30 days)
82
Average likes per tweet (last 30 days)
Average likes per tweet (last 30 days)
1
Average likes per tweet (last 30 days)
2.1
Average likes per tweet (last 30 days)
1.1
Average likes per tweet (last 30 days)
0.4
Percentage of tweets with engagement (last 30 days)
Percentage of tweets with engagement (last 30 days)
82.05%
Percentage of tweets with engagement (last 30 days)
38.46%
Percentage of tweets with engagement (last 30 days)
67.86%
Percentage of tweets with engagement (last 30 days)
45.12%
Alexa Website Rank
Alexa Website Rank
311955
Alexa Website Rank
58174
Alexa Website Rank
107753
Alexa Website Rank
202656
Employee Rating
Employee Rating
4.5
Employee Rating
3.2
Employee Rating
3.6
Employee Rating
4.2

Funding

Latest funding round
Latest funding round
$ 35m (about 4 years ago)
Latest funding round
N/A
Latest funding round
$ 1m (almost 5 years ago)
Latest funding round
N/A
Total funding raised
Total funding raised
$ 38.8m
Total funding raised
$ 135m
Total funding raised
$ 38.7m
Total funding raised
N/A
For sources of this data, please see the company profile

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Clear
HQ
New York, US
Employees
1,646

Clear is a high speed mobile internet service that provides flexible 4G wireless internet access for web-enabled devices.

View company
SecureAuth
HQ
Irvine, US
Employees
222↓ 3% decrease

SecureAuth is the leader in adaptive access control solutions, to determine identities with confidence.

View company
OneSpan
HQ
Chicago, US
Employees
744↑ 2% increase

OneSpan (formerly VASCO Data Security International) is a publicly-traded cybersecurity technology company.

View company