SIGNL4
SIGNL4 is a mobile-first SaaS alerting and incident response platform, operated by Derdack GmbH, that delivers push, SMS, voice, and email notifications with on-call scheduling and escalation for IT, SecOps, MSP, and industrial OT teams across 200+ integrations.
- Company typePrivate
- Founded2017
- HeadquartersPotsdam, Germany
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What SIGNL4 does
SIGNL4 is a mobile-first operational alerting and incident response SaaS platform operated by Derdack GmbH, headquartered in Teltow, Germany, with a US presence in Richmond, Virginia. The platform ensures that critical alerts from monitoring, ITSM, security, and industrial systems trigger accountable human response via push, SMS, voice, and email notifications routed through on-call schedules, with acknowledgment tracking and automatic escalation policies. Core product modules include the mobile alerting app for iOS and Android, AI-powered on-call scheduling, stakeholder communication, call routing, and integration via REST API, webhooks, and SMTP. The platform connects to more than 200 tested third-party systems, including ServiceNow, Microsoft Sentinel, Zabbix, PRTG, Wazuh, Checkmk, ConnectWise, and SCADA/IoT platforms, and is hosted in the EU with ISO/IEC 27001:2022 and TISAX certifications.
The business model is subscription-based SaaS with publicly listed pricing and a 30-day free trial as the primary acquisition motion, supplemented by enterprise field sales for large accounts. SIGNL4 distributes through the ServiceNow Store, the PRTG Uptime Alliance, an MSP partner program with multi-tenant capabilities, and direct sales, targeting IT operations teams, security operations centers (SecOps), managed service providers, and industrial/OT environments. Customers span aviation (Berlin-Brandenburg Airport), chemicals (BASF), automotive (Scania), manufacturing (BSH Hausgeräte), credit unions (Conexus, Cumberland Mutual), energy and refining (PBF, MP Materials, Verdun Oil), public transit, healthcare, and higher education. As of 2025-2026 the company is actively positioning as a migration destination for Atlassian Opsgenie customers ahead of Opsgenie's April 2027 retirement, and is investing in AI-driven scheduling, summarization, and incident intelligence capabilities to broaden its differentiation.
SIGNL4 firmographics
Firmographics- Name
- SIGNL4
- Legal name
- Derdack GmbH
- Website
- https://signl4.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- SIGNL4 is a mobile-first SaaS alerting and incident response platform, operated by Derdack GmbH, that delivers push, SMS, voice, and email notifications with on-call scheduling and escalation for IT, SecOps, MSP, and industrial OT teams across 200+ integrations.
- Ownership category
- akta.pro rank
SIGNL4 industry classification
Industry- Product category
- Incident Management Software
- NAICS
- Computer Systems Design and Related Services (54151), Custom Computer Programming Services (541511)
- SIC
- Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- IT Incident, Problem & Change Management Platforms (HDAEALAI)
Keywords
Where SIGNL4 is headquartered
LocationHeadquarters
- HQ city
- Potsdam
- HQ country
- Germany
- HQ region
- Europe
Offices2 records
Markets served
SIGNL4 business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Subscription SaaS: SIGNL4 operates as a cloud-hosted SaaS platform with subscription-based pricing. Customers pay for access to the mobile alerting and incident response platform, typically per team or per user with tiered pricing based on features and usage levels.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Standard subscription with free trial |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels7 records
SIGNL4 product offering
Product offeringCore offering
SIGNL4 is a mobile-first SaaS operational alerting and incident response platform that delivers critical alerts via push, SMS, voice, email, Microsoft Teams, and Slack to on-duty personnel, tracks acknowledgement, and automatically escalates until someone takes ownership. It adds AI-powered on-call scheduling, alert unification and filtering, two-way integration with monitoring, ITSM, SIEM, and industrial systems, and supports use cases spanning IT alerting, SecOps, industrial OT, and managed service providers across 200+ verified integrations.
Product overview
SIGNL4 is a mobile-first SaaS operational alerting and response platform consisting of the core SIGNL4 Alerting Software platform plus multiple integrated modules and capabilities. The core platform provides mobile alerting with push, SMS, voice, and email notifications along with alert routing, escalation policies, and acknowledgement tracking. Key product modules include: AIOps and AI Alerting for AI-powered incident intelligence with pattern detection, intelligent event filtering, and AI summaries; High-Reliability Alert Notifications with mute override and custom sounds; Mobile Alerting App for iOS and Android; On-Call Scheduling with AI-powered shift management; Call Routing for after-hours operations; and Active Stakeholder Communication for real-time incident updates. The platform offers extensive integration options via REST API, Webhooks, and SMTP/Email. SIGNL4 also provides specialized solutions for IT Alerting, Incident Management, SecOps Alerting, MSP Alerting, IoT Service Alerting, SCADA Alarm Notifications, Field Service Alerting, Building Automation, and Emergency Alerting.
Differentiator
Problem solved
Functional benefit
Products and services
- SIGNL4 Alerting Software The main mobile-first SaaS operational alerting and incident response platform that delivers critical alerts via push, SMS, voice, email, Microsoft Teams, and Slack to on-duty personnel, tracks acknowledgement, and automatically escalates until someone takes ownership. It bundles on-call scheduling, alert unification and filtering, AI-powered incident intelligence, and 200+ integrations with monitoring, ITSM, SIEM, and industrial systems. It is sold to enterprise IT, SecOps, industrial OT, and MSP customers.
- SIGNL4 Mobile Alerting App Standalone native mobile application available on Google Play and the Apple App Store that provides on-call and field workers a single pane of glass for receiving, acknowledging, annotating, and closing critical alerts, with features such as Duty Companion (showing shift details without unlocking the phone) and mute override.
Quantifiable outcome
- Up to 10x faster incident response
- +3 more outcomes
Companies that use SIGNL4
Customer profileNamed customers23 records
Segments5 records
Ideal customer profiles4 records
SIGNL4 technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration213 records
AI capability7 records
Feature15 records
SIGNL4 partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered flagship and core.
- Microsoft (MISA)flagshipDerdack SIGNL4 joined the Microsoft Intelligent Security Association (MISA) in May 2022. The membership demonstrates commitment to the Microsoft ecosystem and enables deeper integration with Microsoft security products including Microsoft Sentinel, Microsoft Defender, and Azure security services.
- Paessler AG (PRTG)coreDERDACK SIGNL4 is a member of the PRTG Uptime Alliance. The partnership enables joint customers using PRTG Network Monitor to easily integrate SIGNL4 for enhanced alerting, on-call scheduling, and mobile incident response. PRTG is a leading network monitoring solution.
- ServiceNowcoreSIGNL4 is available on the ServiceNow Store as a certified integration. The two-way integration allows ServiceNow tickets to trigger mobile alerts in SIGNL4, with acknowledgments and status changes syncing back to ServiceNow automatically.
- ZabbixcoreSIGNL4 is integrated as a native Media Type in Zabbix since version 5.0. The two-way integration enables Zabbix users to receive mobile alerts and acknowledge/close alerts directly from the SIGNL4 app. Available on Zabbix integrations marketplace.
- WazuhcoreSIGNL4 integrates with Wazuh SIEM for security operations alerting. Wazuh uses webhooks to submit alert information to SIGNL4, enabling mobile alerting for cybersecurity incidents and threats.
- CheckmkcoreNative integration with Checkmk monitoring system for reliable notifications and on-call scheduling. Listed as a top integration partner.
- ConnectWisecoreIntegration with ConnectWise PSA for managed service providers enabling ticket alerting, notifications, and on-call management. Listed as a top integration partner.
- IcingacoreNative integration with Icinga monitoring system for notifications, alerts, and on-call management. Listed as a top integration partner.
- KaseyacoreIntegration with Kaseya BMS and automation platforms for notifications, alerts, and on-call scheduling. Listed as a top integration partner.
- Microsoft SentinelflagshipNative integration with Microsoft Sentinel SIEM for security alerting. As a MISA member, SIGNL4 provides enhanced mobile alerting capabilities for Microsoft security operations. Listed as a top integration partner.
- Microsoft TeamscoreIntegration with Microsoft Teams for reliable mobile alerting. Allows Teams users to receive and respond to critical alerts directly through the Teams interface. Listed as a top integration partner.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
SIGNL4 competitors and assessment
Company assessmentEmerging players
- incident.io: incident.io is a Slack-native incident response and on-call platform that has gained strong traction with developer-led organizations. Emerging competitor with strong product velocity and venture backing; targets similar buyer personas as SIGNL4.
- FireHydrant: FireHydrant provides incident response, on-call, and retrospectives with strong developer workflow integrations. Emerging competitor in mid-market SRE/DevOps alerting with overlapping feature set to SIGNL4.
- Grafana OnCall (formerly Amixr): Grafana OnCall is an open-source incident response and alerting tool tightly integrated with Grafana's observability stack. Emerging competitor particularly strong with Prometheus/Grafana users — a segment SIGNL4 also serves.
Direct peers
- Squadcast: Squadcast (by Squadcast Inc.) offers on-call scheduling, incident response, and alerting as SaaS, with strong SRE/DevOps customer base. Direct competitor in mid-market alerting, often cited alongside SIGNL4 in G2 reviews.
- PagerDuty: PagerDuty is the leading digital operations management platform offering incident response, on-call scheduling, and alerting with extensive integrations. Most direct competitor to SIGNL4 in the mid-market and enterprise ITSM alerting category.
- Opsgenie (Atlassian): Atlassian Opsgenie provides alerting, on-call scheduling, and incident response. SIGNL4 explicitly positions as the migration alternative ahead of Opsgenie's retirement in April 2027, making it the most relevant incumbent target customer base.
- xMatters: xMatters (now part of Everbridge) is an incident response and alerting platform with on-call scheduling and ITSM integrations. Direct competitor focused on enterprise ITSM and DevOps incident workflows.
- ilert: ilert is a European-based alerting and incident response SaaS platform with on-call scheduling, escalations, and integrations. Closest geographic and product parallel to SIGNL4 with a similar mid-market European customer focus.
- Splunk On-Call (formerly VictorOps): Splunk On-Call (formerly VictorOps) delivers incident response and alerting tightly integrated with Splunk's observability and SIEM stack. Direct competitor in SecOps alerting, now part of Cisco.
Broad incumbents
- ServiceNow ITSM: ServiceNow ITSM offers native incident management, on-call scheduling, and alerting as part of its broader enterprise service management platform. SIGNL4 both integrates with ServiceNow (Store) and competes against its native alerting capabilities.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
SIGNL4 social profiles
Digital presenceSIGNL4 compliance and trust
Trust signalCompliance2 records
SIGNL4 financial estimates
Financial estimateRevenue estimate
Valuation estimate
SIGNL4 leadership team
Management profileNumber of profiles
Profiles2 records
SIGNL4 funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SIGNL4 M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SIGNL4
What does SIGNL4 do?
SIGNL4 is a mobile-first SaaS operational alerting and incident response platform that delivers critical alerts via push, SMS, voice, email, Microsoft Teams, and Slack to on-duty personnel, tracks acknowledgement, and automatically escalates until someone takes ownership. It adds AI-powered on-call scheduling, alert unification and filtering, two-way integration with monitoring, ITSM, SIEM, and industrial systems, and supports use cases spanning IT alerting, SecOps, industrial OT, and managed service providers across 200+ verified integrations.
Is SIGNL4 a public or private company?
SIGNL4 is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was SIGNL4 founded?
SIGNL4 was founded in 2017. It employs 11 to 50 people.
Where is SIGNL4 based?
SIGNL4 is headquartered in Potsdam, Germany, in the Europe region.
How does SIGNL4 make money?
One revenue line is on record: subscription SaaS.
Who are SIGNL4's main competitors?
Emerging players on record are incident.io, FireHydrant and Grafana OnCall (formerly Amixr). Direct peers are Squadcast, PagerDuty, Opsgenie (Atlassian), xMatters, ilert and Splunk On-Call (formerly VictorOps). ServiceNow ITSM is listed as a broad incumbent.
Does SIGNL4 have an API?
Yes. SIGNL4 provides a REST API (API V2) for integrating services or implementing additional features. Integration methods include webhooks (HTTP requests), SMTP/Email integration, and two-way connectors. The API supports event triggering, alert management, team management, user management, duty scheduling, category management, and audit trail exports. Authentication uses X-S4-Api-Key header and team/integration secrets. Developer documentation is at connect.signl4.com/api/docs/index.html?urls.primaryName=SIGNL4%20API%20V2.
What industry is SIGNL4 in?
SIGNL4's product category is Incident Management Software. Its primary akta.pro industry code is HDAEALAI, IT Incident, Problem & Change Management Platforms. Its NAICS code is 54151 and its SIC code is 7372.