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Legal

Open source

Kozorosa for Mac contains components published under the GNU Lesser General Public License (LGPL). That licence gives you rights over them: to have their source code, to change them, and to use a changed version with the application. This page is where you exercise those rights.

Updated 12 October 2026.

Each component below names the exact version the application carries, where its original source code is published, and, when we changed it, our change as a file you can download. When an update of the application changes one of these versions, the earlier entry stays on this page for three years.

Every other open-source component of the application, with its licence and licence text, is listed in the application itself, under Help → Acknowledgements.

Geometry

Open CASCADE Technology 7.9.3

The geometric modelling library the kernel builds every shape with. It ships as separate dynamic libraries inside the application (Contents/Frameworks/libTK*.dylib), which can be replaced by a modified build of the same interface.

  • Licence: GNU Lesser General Public License version 2.1, with the Open CASCADE exception.
  • Original source: tag V7_9_3 of github.com/Open-Cascade-SAS/OCCT, commit a016080bf6738d6aeae020badee4e888ad1540a5.
  • The same as an archive: V7_9_3.tar.gz, SHA-256 5ecf094ec6b12d5413dfb851d8c3590c354058aee556e32e408bdfbf8c357d57.
  • Our change: occt-7.9.3-tie-order.patch (SHA-256 aa4f9f2c3e54197b1c55881ca1fbfa52675b66a59f2ceebb1060745bc0f9d584). The Delaunay mesher sorts vertices that compare equal in the order the GNU C++ library does, so that a Mac meshes a face exactly as our Linux reference does. Nothing else is changed.
  • How we build it: build-deps-macos.sh (SHA-256 759c6c0d33d94a462376246efbad5ce1a965b67dbdf790d0c477838a423b9730), which fetches the tag, applies the patch and compiles it for macOS 13.3 with -ffp-contract=off and its mathematical functions taken from libglibcm (below).
Mathematics

libglibcm

The mathematical functions of the GNU C Library 2.43 (sine, cosine, power, logarithm…), compiled on their own, so that the application computes exactly what our Linux reference computes. It ships as a separate dynamic library (Contents/Frameworks/libglibcm.dylib), which can be replaced by a modified build of the same interface.

  • Licence: GNU Lesser General Public License version 2.1 or later.
  • Original source: glibc-2.43.tar.xz from the GNU project, SHA-256 d9c86c6b5dbddb43a3e08270c5844fc5177d19442cf5b8df4be7c07cd5fa3831. Its source files are used unchanged.
  • Our build: libglibcm-2.43-build.tar.gz (SHA-256 dcc20647505e2b78ef2376210e6893c0b01919dd558cd6b99303a1c43dea8209): the build script, the small headers that stand in for glibc's internal build headers, the list of exported functions, and the test that checks every function against glibc's own results. build.sh downloads the archive above, checks its SHA-256 and builds the library.
Runtime

Bun 1.4.2 — JavaScriptCore

The application's server is compiled with Bun, a JavaScript runtime under the MIT licence. Bun contains, linked into its executable, JavaScriptCore from WebKit and the Tiny C Compiler, which are under the LGPL. We use the official release of Bun unchanged.

Written offer

Asking us for the source code

For three years from the distribution of each version of Kozorosa for Mac, on request to hello@kozorosa.com, we provide anyone with the complete corresponding source code of the components above, with our changes, on a physical medium or by download, for no more than the cost of distributing it.

Say which version of the application you have (Kozorosa → About Kozorosa) and which components you want.

Niente da dire SRL — hello@kozorosa.com