Signal

signal.org · San Francisco, United States of America

Signal is a nonprofit organization that develops and maintains the Signal private messenger, an open-source, end-to-end encrypted communication application for individuals and organizations. It provides secure text, voice, video, and group messaging via mobile and desktop apps, funded by donations and grants rather than advertising or data monetization.

Revenue
$15.0M
Employees
120
Founded
2018
Headquarters
San Francisco, United States of America

What 36 Arbolus experts think of Signal

NPS is highly positive, with 85% of scores in the 7–10 range. Renewal intent is strong in the Influencer and User pools, especially among high spenders and security-focused roles. Most users report being in the MoreThan1Year implementation stage, reflecting mature adoption and high platform stickiness. Key expert themes emphasize privacy, confidentiality, and ease of use, with core concerns centered on administrative controls and business scaling. A minority express lower sentiment tied to functionality and network effects, but these do not outweigh the overall confidence in the platform.Overall Customer Sentiment: Positive

Who reviewed Signal

Total customers 36 33 current · 3 former
Reviews growth +26 in six months
Seniority of respondents
  • C-Suite 66% (24)
  • Director 28% (10)
  • Manager 6% (2)
Revenue Leader C-Suite NPS 8 Will renew
Revenue Leader Director NPS 9
Revenue Leader C-Suite NPS 7

Employer names and spend open in the full report, along with the other 33 customers.

Everything 36 customers told us about Signal.

Employer names, spend, renewal intent and every written answer behind the numbers on this page.

Open the full report

Sentiment

47 Net Promoter Score, from 36 scored reviews
  • Promoters 23
  • Passives 7
  • Detractors 6

Cumulative NPS by month

+0 over 6 months
  • May 8
  • Jun 8
  • Jul 8
  • Aug 8
  • Sep 8
  • Oct 8

Net Promoter Score across 5 reviews, accumulated up to each month. Category median 47 across 5 companies.

Praised

  • Improved desktop and document sharing
  • Enterprise user management and compliance
  • Broader business functionality and group management
  • Best-in-class privacy and encryption

Criticised

  • Limited document sharing and desktop workflow
  • Enterprise management limitations
  • Network effect and adoption barrier
  • AI-enabled enterprise competitors

What customers say

Best-in-class privacy and encryption
“I would recommend Signal for its strong end-to-end encryption, a clean interface, and a clear privacy-focused philosophy.”
Critical for sensitive communications
“Signal is mission-critical for our security, ensuring highly sensitive conversations are protected from surveillance and unauthorized access.”
Open-source and non-profit trust
“I chose Signal because of its industry-standard end-to-end encryption, non-profit open-source governance, and a strict zero-metadata collection policy.”

Renewal intent

Plan to renew 69%
  • Will renew 9
  • Undecided 1
  • Not renewing 3

Plan to renew, by seniority

  • C-Suite 78% 9 answers
  • Director 0% 2 answers
  • Not specified 100% 2 answers
  • 8.8/10 Average score from customers who will renew
  • 5/10 Average score from undecided customers
  • 5.7/10 Average score from customers not renewing

Top alternatives

Most weighed by Signal customers

Report

For people who use Signal

Do you use Signal at work?

Share your software review and get matched to paid projects. Arbolus pays you every time a client reads your review.

  • 36 customers of Signal have already contributed
Share your experience

Takes a few minutes. Your identity stays anonymous.