SIGNL4's tech stack
What does SIGNL4 use?
SIGNL4 (signl4.com) uses at least 29 tools we can see from public records, including Microsoft Azure for hosting, HubSpot for sales, Zendesk for customer support and Recurly for payments. SIGNL4 has used HubSpot since Jan 2023, going by certificate records. Last checked .
“Derdack is a bootstrapped innovator in alert management, communication automation and incident management. SIGNL4 is our SaaS product, empowering operations teams with mobile alerting and anywhere incident management.”
- Industry
- Software
- Size
- 11–50 employees
- Based in
- Potsdam, Germany
- Founded
- 2017
- Company page
- Tools found
- 29
- Categories
- 15
- Oldest proven tool
- Jan 2023
- Last checked
- Nov 2026
SIGNL4's stack, layer by layer
Of 29 tools, 15 came from website code, 8 from custom domain, 4 from email records and 2 from other records. Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
5 tools, where the bytes are served from
CDN & Edge
Application
6 tools, what the product is built with
Frontend
Payments & Billing
Data & Observability
1 tool, what they measure and store
Analytics
Go-to-market
12 tools, how they find and keep customers
Website & CMS
Sales & CRM
Support & Docs
Company Ops
5 tools, what the team runs on day to day
Email Delivery
Workspace
Security & Compliance
What changed at SIGNL4
Using since
Dates come from the first certificate of the subdomain that points at the tool.
Companies like SIGNL4 also use
Tools common among companies with a similar stack that we haven't found at SIGNL4.
Companies with a stack like SIGNL4's
Ranked by shared tools, with rare tools counting more.
LanguageTooler GmbHSoftware · 11–50 people8in common
Eagle Club SystemsSoftware · 11–50 people7in common
UdioSoftware · 1–10 people9in common
Simon Says SpeechIndividual & Family Services · 11–50 people11in common
LaunchwiseMarketing and Advertising · 11–50 people7in common
Ribeyes Steakhouse- HendersonRestaurants · 11–50 people9in common
Magnetic MarketingMarketing and Advertising · 11–50 people9in common
ZoodealioReal Estate · 11–50 people14in common
More Software companies
Other Software companies we've checked.
SIGNL4 tech stack FAQ
What tools does SIGNL4 use?
As of November 2026, runsonwhat has found 29 tools at SIGNL4 (signl4.com) in public records. Edge & Hosting: Cloudflare, GoDaddy and Amazon Web Services. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, reCAPTCHA and SendGrid. Last checked November 8, 2026.
What cloud does SIGNL4 run on?
SIGNL4 uses Amazon Web Services for hosting and cloud infrastructure, alongside Microsoft Azure and GitHub Pages, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on signl4.com. Amazon Web Services is used by 147,633 companies runsonwhat tracks.
What CRM does SIGNL4 use?
SIGNL4 uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot, and SIGNL4 has used it since at least January 2023. HubSpot is used by 97,938 companies runsonwhat tracks.
What email provider does SIGNL4 use?
SIGNL4 uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on signl4.com. Microsoft 365 is used by 736,659 companies runsonwhat tracks.
What does SIGNL4 use for customer support?
SIGNL4 uses Zendesk for customer support and documentation, alongside Drift, according to runsonwhat (November 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and code on signl4.com, and SIGNL4 has used it since at least August 2023. Zendesk is used by 43,775 companies runsonwhat tracks.
What payment provider does SIGNL4 use?
SIGNL4 uses Recurly for payments and billing, according to runsonwhat (November 2026). runsonwhat found Recurly through email records that authorize Recurly. Recurly is used by 92 companies runsonwhat tracks.
How long has SIGNL4 used HubSpot?
SIGNL4 has used HubSpot since at least January 2023, going by the first public certificate of the signl4.com subdomain that points at HubSpot. Other long-running tools at SIGNL4 include HubSpot CMS (since January 2023), Zendesk (since August 2023) and GitHub Pages (since April 2024).
Does SIGNL4 use jQuery?
Yes. runsonwhat found jQuery at SIGNL4 through jQuery code on signl4.com. jQuery is a Frontend tool used by 927,270 companies runsonwhat tracks.
Which companies have a tech stack similar to SIGNL4's?
The companies with the stacks most like SIGNL4's are LanguageTooler, Eagle Club Systems, Udio and Simon Says Speech, according to runsonwhat (November 2026). Each shares 7 to 11 tools with SIGNL4, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what SIGNL4 uses?
runsonwhat reads public records only. Of the 29 tools at SIGNL4, 15 were found through code on signl4.com, 8 through subdomains that point at the vendor, 4 through email records and 2 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and signl4.com about 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.