Active Group
Active Group GmbH is a Tübingen-based IT services firm offering custom software development, consulting, and iSAQB-accredited training focused on functional programming (Haskell, Clojure, Scala, etc.) and formal methods for enterprise clients with complex, correctness-critical systems in the DACH region.
- Company typePrivate
- Founded1997
- HeadquartersTübingen, Germany
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Active Group does
Active Group GmbH is a Tübingen-headquartered IT services firm founded in 1997 that specializes in functional programming and software architecture. It sells three integrated service lines: custom software development for clients with complex, long-lived, and correctness-critical systems; consulting on software architecture modernization and digital transformation (including a fixed-price 'Architecture Thermometer' assessment); and iSAQB-accredited training spanning the CPSA Foundation Level plus Advanced Level modules (FUNAR, FLEX, DSL, FM) and language-specific courses in Haskell, Clojure, Scala, Erlang, Elixir, OCaml, F#, Kotlin, and Nix. The firm positions its expertise around mathematically grounded, formally verified software — using functional languages and DSLs rather than conventional object-oriented stacks — and maintains a portfolio of open-source Clojure/ClojureScript libraries (active-clojure, active-data, reacl2, reacl-c) that act as community-facing assets.
The company employs 11–50 staff, served the DACH region (Germany, with named engagements such as Commerzbank AG and Bosch Thermotechnik), and as of July 2025 became wholly employee-owned, with 13 staff members holding shares. Marketing and demand generation rely almost entirely on technical credibility — conference speaking at events such as the BOB conference (co-founded by Active Group), Java Forum Stuttgart, DDD Europe, Lambda Days, and the TFP symposium — alongside open-source contributions, books (e.g., Sperber's 'Schreibe Dein Programm', 2023), and curricula co-authorship for iSAQB. Distribution uses direct enterprise consulting, public training cohorts delivered via partner oose, and in-house customized training.
Revenue mechanics are professional services: billable consulting and development days at premium niche rates, plus per-attendee training fees (EUR 2,000–EUR 2,800) and the EUR 5,000 Architecture Thermometer SKU. Public revenue is not disclosed, but with a 11–50 person specialist team the firm plausibly operates in the low single-digit to low tens of millions of euros range. There is no institutional investor, parent, or M&A activity, and no disclosed AI/ML capability — the firm's competitive play is depth of functional programming and formal methods rather than AI-native offerings.
Active Group firmographics
Firmographics- Name
- Active Group
- Legal name
- Active Group GmbH
- Website
- https://active-group.de
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Active Group GmbH is a Tübingen-based IT services firm offering custom software development, consulting, and iSAQB-accredited training focused on functional programming (Haskell, Clojure, Scala, etc.) and formal methods for enterprise clients with complex, correctness-critical systems in the DACH region.
- Ownership category
- akta.pro rank
Active Group industry classification
Industry- Product category
- Software Development Services
- NAICS
- Custom Computer Programming Services (541511), Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)
- SIC
- Services-Computer Programming Services (7371)
- akta.pro primary industry
- Custom Application Development (Web/Mobile/Desktop) (BPAEAFAA)
- akta.pro secondary industries
- Enterprise Architecture & IT Operating Model (BPAHAEAB), Software Engineering & Application Development Training (Languages, Frameworks, Testing) (BPAEANAI), DevOps, SRE & Platform Engineering (CI/CD, IaC, Containers) (EDABAFAC), Software Development (Programming, Frameworks, Dev Tools) (EDABAFAA)
Keywords
Where Active Group is headquartered
LocationHeadquarters
- HQ city
- Tübingen
- HQ country
- Germany
- HQ region
- Europe
Offices2 records
Markets served
Active Group business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Others
Revenue model
- Custom Software Development: Active Group develops custom software for clients with complex domains, long-lived infrastructure, and critical systems. Revenue is generated through project-based engagements.
- Consulting Services: Architecture modernization consulting including Architecture Thermometer (EUR 5,000) and Architecture Mobilization services. Digital transformation and data modeling consulting.
- Training Services: iSAQB-certified training courses (Foundation Level and Advanced Level modules) and language-specific training (Haskell, Clojure, Scala, F#, OCaml, Erlang, Elixir, Kotlin, Nix). Offered publicly and in-house.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Formale Methoden (FM) - Online Training |
| Subscription | Multi-year contract | Funktionale Softwarearchitektur (FUNAR) - Online Training |
| Subscription | Multi-year contract | iSAQB Foundation Level - Public Training |
| One time/ perpetual license | Pay-as-you-go | Architecture Thermometer Consulting |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels6 records
Active Group product offering
Product offeringCore offering
Active Group develops custom software for enterprise clients with complex domains, long-lived infrastructure, and critical systems using functional programming and formal methods. It advises organizations on software architecture modernization, digital transformation, and data modeling, and delivers iSAQB-accredited and language-specific training (Haskell, Clojure, Scala, F#, OCaml, Erlang, Elixir, Kotlin, Nix) both publicly and as in-house programs.
Product overview
Active Group is a medium-sized IT service provider offering a unified portfolio of software development, consulting, and training services centered on functional programming. The core offerings consist of Development Services (custom software for complex domains), Consulting Services (architecture modernization, digital transformation), and Training Services (iSAQB-certified and language-specific courses). They also maintain a suite of Open Source Libraries (active-clojure, active-data, reacl2, reacl-c, reacl-c-basics) available on GitHub. Their training programs include iSAQB Foundation and Advanced modules (FUNAR, FLEX, DSL, FM) plus specialized courses in Clojure, Scala, Haskell, Erlang, Elixir, OCaml, F#, Kotlin, and Nix.
Differentiator
Problem solved
Functional benefit
Products and services
- Development Services Custom software development services for enterprise clients with complex domains, long-lived infrastructure, and critical systems where correctness is paramount, delivered using functional programming and formal methods.
- Consulting Services Advisory and support services for software architecture design, development technology selection, and coaching, including architecture modernization, digital transformation consulting, and the fixed-price Architecture Thermometer assessment.
- Architecture Thermometer One-week fixed-price architecture assessment and recommendation service for organizations whose in-house software development is faltering or who want an external view of their software architecture.
- Training Services Portfolio of professional training including iSAQB Foundation Level and Advanced Level modules and language-specific functional programming courses, offered publicly (Munich, Hamburg, Berlin, Stuttgart, online) and as in-house enterprise programs.
- iSAQB Foundation Level Training Publicly scheduled, exam-preparatory iSAQB Foundation Level training (CPSA-F) delivered in German cities and online, with a practical case study approach and optional certification exam.
- iSAQB FUNAR - Functional Software Architecture iSAQB Advanced Level module (CPSA-A) teaching software architecture using functions, immutable data, and combinators as an alternative to object-oriented architecture.
- iSAQB FLEX - Flexible Architecture Models iSAQB Advanced Level module (CPSA-A) covering microservices, Self-Contained Systems, and strategies for organizing large systems built by large teams.
- iSAQB DSL - Domain-Specific Languages iSAQB Advanced Level module (CPSA-A) on designing and implementing domain-specific languages to manage complex domains and enable low-code approaches.
- iSAQB FM - Formal Methods iSAQB Advanced Level module (CPSA-A) teaching mathematical techniques to prove software correctness for safety-critical and business-critical systems.
- Clojure Training Standalone training course in Clojure on the Java platform, focusing on functional data structures, domain-specific language implementation, and concurrent data processing.
- Scala Training Standalone training course in Scala, combining object-oriented and functional programming with modern type systems on the Java platform.
- Haskell Training Standalone training course in Haskell, the functional programming language with a powerful type system for stability and safety.
- Erlang Training Standalone training course in Erlang and OTP for developing performant and extremely robust systems, originally developed by Ericsson.
- Elixir Training Standalone training course in Elixir for developing highly reliable, distributed systems on the Erlang platform with minimal downtime.
- OCaml Training Standalone training course in OCaml, featuring a high-performance functional core, flexible module system, and class system for scalable software.
- F# Training Standalone training course in Microsoft's F# programming language for .NET infrastructure, enabling compact and flexible software development.
- Kotlin Training Standalone training course in Kotlin using the DeinProgramm approach for systematic data modeling and functional programming concepts.
- Nix Training Standalone training course in Nix, the functional tool for reproducible development environments, CI/CD pipelines, and minimal container delivery artifacts.
- Open Source Libraries Public open-source software portfolio maintained by Active Group and distributed via GitHub, including active-clojure, active-data, reacl2, reacl-c, and reacl-c-basics Clojure/ClojureScript libraries for use by external developers.
Quantifiable outcome
- One software system developed for Commerzbank AG received an internal prize
Companies that use Active Group
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Active Group technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Active Group partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- iSAQB (International Software Architecture Qualification Board)coreActive Group is an active member and accredited training provider of iSAQB. Dr. Michael Sperber is a member and accredited trainer, participating in curriculum development for Foundation Level and co-authoring curricula for FUNAR, DSL, and FM modules.
- oosecorePartnership for delivering iSAQB training courses. oose handles registration for some public training sessions (DSL, FLEX courses in Hamburg).
- BOB ConferencecoreActive Group co-founded the BOB (Berlin Oriented Programming) developer conference. Dr. Michael Sperber is co-organizer.
- ACM SIGPLAN Workshop on Functional Software ArchitectureminorDr. Michael Sperber is co-founder of the ACM SIGPLAN Workshop on Functional Software Architecture - FP in the Large.
- funktionale-programmierung.deminorDr. Michael Sperber is co-founder of this blog covering functional programming topics.
- IHK ReutlingenminorActive Group conducted a workshop on Functional Programming as part of the 'Innovation & Best-Practice' workshop series of the IHK Research & Development Network.
Scale indicators6 records
Recent moves7 records
Expansion highlights5 records
Active Group competitors and assessment
Company assessmentDirect peers
- Tweag I/O: Tweag is a Haskell and formal methods consultancy with deep expertise in functional programming, Nix, and mathematical software correctness - directly comparable to Active Group's core functional programming and formal methods offering.
- FP Complete: FP Complete provides Haskell tooling (Stack), consulting, and training - a direct functional programming services peer with overlapping technology stack and customer use cases.
- oose: oose is a German IT training and consulting firm that is both a channel partner and a direct competitor for iSAQB and software architecture training in the DACH region.
- 47 Degrees: 47 Degrees is a functional programming consultancy specializing in Scala and FP architectures, serving similar enterprise clients tackling complex domains - directly comparable in service offering and target market.
- Serokell: Serokell is a Haskell and functional programming software development company offering custom development and consulting - closely overlapping with Active Group's core services and technology stack.
- Well-Typed LLP: Well-Typed is a Haskell-focused consulting firm providing custom development, training, and support - a textbook direct peer in boutique functional programming services.
- embarc Software Consulting: embarc is a German software consulting firm specializing in Java, functional programming, and architecture - co-presenting at Java Forum Stuttgart with Active Group and serving a similar DACH enterprise clientele.
Broad incumbents
- codecentric: codecentric is a larger German IT consultancy offering broader software engineering, DevOps, and architecture services - a broad incumbent that competes for similar DACH enterprise modernization engagements.
- ThoughtWorks: ThoughtWorks is a global consultancy with deep functional programming expertise (Scala/Clojure), competing for complex enterprise software engagements worldwide - a broad incumbent overlapping at the high end of the same niche.
- innoQ: innoQ is a well-established German IT consultancy offering architecture, development, and consulting services - a broader incumbent competing in the same DACH enterprise software advisory market.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Active Group social profiles
Digital presenceActive Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Active Group leadership team
Management profileNumber of profiles
Profiles10 records
Active Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Active Group 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 Active Group
What does Active Group do?
Active Group develops custom software for enterprise clients with complex domains, long-lived infrastructure, and critical systems using functional programming and formal methods. It advises organizations on software architecture modernization, digital transformation, and data modeling, and delivers iSAQB-accredited and language-specific training (Haskell, Clojure, Scala, F#, OCaml, Erlang, Elixir, Kotlin, Nix) both publicly and as in-house programs.
Is Active Group a public or private company?
Active Group is a private company. It is classified as management employee owned and is currently operating.
When was Active Group founded?
Active Group was founded in 1997. It employs 11 to 50 people.
Where is Active Group based?
Active Group is headquartered in Tübingen, Germany, in the Europe region.
How does Active Group make money?
Three revenue lines are on record. Custom Software Development is the primary driver. The others are consulting Services and training Services.
Who are Active Group's main competitors?
Direct peers on record are Tweag I/O, FP Complete, oose, 47 Degrees, Serokell, Well-Typed LLP and embarc Software Consulting. Broad incumbents are codecentric, ThoughtWorks and innoQ.
Does Active Group have an API?
No public API is recorded for Active Group.
What industry is Active Group in?
Active Group's product category is Software Development Services. Its primary akta.pro industry code is BPAEAFAA, Custom Application Development (Web/Mobile/Desktop), with a secondary code of BPAHAEAB, Enterprise Architecture & IT Operating Model. Its NAICS code is 541511 and its SIC code is 7371.