Build, Execute and Analyze Complex Test Scenarios Quickly and Easily

Product update:

December 4, 2019 - The new version of TTworkbench 29 supports the latest TTCN-3 edition 4.11, is based on Eclipse 4.12 (Release 2019-06) and includes an OpenJDK 13 package. Get more details...

TTworkbench is the full-featured integrated test development and execution environment (IDE) for any kind of test automation project. This powerful, user-friendly tool allows you to test software products and services regardless of technology, operating system, or implementation domain.

Developing scalable tests has never been easier. Choose from a variety of already existing plugins and test solutions available for TTworkbench, or start your test automation project from scratch.

Please contact us at for more information, consulting, and individual quotes. You can also request a free trial of TTworkbench here.

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TTworkbench comes in two different product formats:

  • TTworkbench Basic: Maintain and modify test suites
  • TTworkbench Professional: Build complex test environments

TTworkbench product overview


  • All-in-one development concept
  • Fast and easy test definition in textual and/or graphical format
  • Full supported test automation
  • Technology independent test system design in TTCN-3
  • Constantly supporting the latest edition of TTCN-3
  • Testing in early design stages
  • High reusability and easy execution of predefined tests
  • Fast integration of test systems
  • Reliable test suites through fast and efficient tracking of bugs
  • Pre-installed TTplugins TCP and UDP (free of charge)
  • Extensible by a variety of further TTplugins
  • Support for all TTCN-3 extension:
    • Full support: Advanced parameterization, behaviour types and extended TRI
    • Partial support: TTCN-3 performance and real-time testing, interfaces with continuous signals

Features & Highlights

TTman: Manage, execute and analyze TTCN-3 compiled test suites

TTman screenshot
  • Definition, execution, saving and resuming of test campaigns project-wise
  • Textual and graphical logging with different levels
  • Test data view with analysis support
  • Follow TTCN-3 source function
  • Selection and configuration of test adapter and runtime plugins (ports, codecs, external functions)
  • Statistics view
  • Generation of test reports (HTML, PDF, Excel, Word)
  • Scripting for batch mode tests
  • Command line and client server option

CL Editor: User-friendly, text-based test definition (including T3Doc)

CL Editor screenshot
  • Full support of the TTCN-3 ETSI standard
  • Text formatting and syntax highlighting
  • Text annotation and error reporting with source navigation
  • Code folding, code templates
  • TTCN-3 data generation and modification wizard
  • Content assistance
  • Module dependency graph
  • Outline page showing specification structure
  • Quick fix support
  • Refactoring
  • T3Doc HTML export

TTthree: Compile TTCN-3 modules into test executables

TTthree screenshot
  • Platform-independent compilation and execution
  • Full support of the TTCN-3 ETSI standard
  • Flexible adaptation to test devices via standardized TTCN-3 Runtime Interface (TRI/XTRI, TRI RT/XTRI RT)
  • Easy integration of external codecs via standardized TTCN-3 Control Interfaces (TCI)
  • Support of C, C#, and Java mapping
  • Codec generator for binary codecs
  • Command line option

GFT Editor: User-friendly graphical test specification and documentation

GFT Editor screenshot
  • Graphical design and visualization of test cases as GFT sequence diagrams
  • Native TTCN-3 data import
  • On-line generation of TTCN-3 Core Language
  • Automatic generation of GFT (graphics) out of TTCN-3 Core Language
  • Flexible export of graphics into GIF (documentation)


Capture & Replay Wizard: Generation of TTCN-3 scripts out of traces

Capture & Replay Wizard screenshot
  • Generation of TTCN-3 scripts out of traces
  • Pcap Trace File Support (used by e.g. Wireshark and tcpdump): widespread capturing format for nearly all kind of network communication
  • Live message capturing from multiple sources
  • Support for console in-/output: script generation for all kind of terminal based communication
  • More information:

TTdebug: TTCN-3 source code level debugger

TTdebug screenshot
  • Transparent debugging of TTCN-3 and Java-based test adapters and codecs simultaneously
  • GUI based setting/removal of breakpoints and watchpoints
  • Manually suspending/resuming running test suites
  • Stepping through a suspended test suite
  • Viewing the status and the stack traces of multiple components
  • Content viewing and modification of local and component variables from base or structured types and of local parameters
  • Viewing the status of timers and manually triggering timeouts
  • Viewing the status of port queues
  • Manipulating the order of messages in the queues
  • Viewing the content of the messages in the queues

RPDE: Runtime Plugin Development Environment

RPDE screenshot
  • Intuitive framework for developing TTCN-3 runtime extension plugins
  • Editing in a plain mode as well as in a GUI assisted mode for all features of a TTCN-3 runtime plugin

Automotive Ethernet Network Testing

Read this case study to learn how Spirent assisted Hyundai in their efforts to determine the best Ethernet designs, to ensure their next-generation automobile conforms to IP and AVB standards.
TTworkbench is basis of the Spirent solutions that were used to test the compliance to OPEN Alliance SIG and Avnu standards – an important requirement for building a complete ecosystem of interoperable devices.

Download Hyundai case study →

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