G4S's tech stack
What does G4S use?
G4S (g4s.com) uses at least 9 tools we can see from public records, including Google Workspace for email and documents, Marketo for marketing, Radancy for hiring and HR and SendGrid for email delivery. Last checked .
- Industry
- Private Security Company
- Size
- 10,000+ employees
- Based in
- London, United Kingdom
- Founded
- 1901
- Company page
- Tools found
- 9
- Categories
- 5
- Layers
- 2 of 5
- Last checked
- Oct 2026
G4S's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Go-to-market
2 tools, how they find and keep customers
Company Ops
7 tools, what the team runs on day to day
Email Delivery
People & HR
Security & Compliance
Companies like G4S also use
Tools common among companies with a similar stack that we haven't found at G4S.
Companies with a stack like G4S's
Ranked by shared tools, with rare tools counting more.
Baxter (South Korea)Medical Equipment · 10,000+ people6in common
Inter IKEA HoldingRetail · 10,000+ people4in common
HalliburtonPetroleum · 10,000+ people5in common
Sunrun Inc.Alternative Energy · 10,000+ people6in common
BlackRockAsset Management · 10,000+ people3in common
Keurig Dr PepperBeverage · 10,000+ people3in common
AstraZenecaPharmaceuticals · 10,000+ people5in common
Hackensack Meridian HealthHealthcare · 10,000+ people3in common
G4S tech stack FAQ
What tools does G4S use?
We've found 9 tools at G4S (g4s.com). Go-to-market: Marketo. Company Ops: Google Workspace, SendGrid and Apple Business. Last checked October 2, 2026.
What email provider does G4S use?
G4S uses Google Workspace and Apple Business for email and documents. We found Google Workspace through email records.
What marketing software does G4S use?
G4S uses Marketo for marketing. We found Marketo through custom domain and email records.
What does G4S use for hiring and HR?
G4S uses Radancy for hiring and HR. We found Radancy through custom domain.
Does G4S use Google Workspace?
Yes. We found Google Workspace at G4S through email records. Google Workspace is used by 126,364 companies we track.
How does runsonwhat know what G4S uses?
We read public traces only: G4S's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.