License

ModbusLab is source-available under the ModbusLab Source Available License 1.0.

This is not an OSI-approved Open Source license.

What You May Do

You may:

  • view, copy, and modify the source code;
  • build ModbusLab from source;
  • use ModbusLab for free, including in production;
  • make internal copies for development, testing, backup, and deployment;
  • distribute modified versions if they follow the license conditions.

Official Builds

Only TyKonLab may distribute official ModbusLab builds, installers, store listings, update feeds, and release artifacts.

TyKonLab may provide official prebuilt binaries for free, for a fee, or not at all. You can still build and use the software from source under the repository license.

Modified Versions

Third-party modified versions must be clearly marked as unofficial, use distinguishable branding and package identities, preserve license notices, and describe material changes.

Redistributing the official ModbusLab distribution, or builds that are unmodified or substantially identical to it, is not permitted without written permission from TyKonLab.

Full Terms

This page is a plain-English summary. The full legal terms are in the repository LICENSE file.