Open source notices
OCCT source and WebAssembly relink kit
WebCAE distributes WebAssembly modules that statically link Open CASCADE Technology (OCCT) and Netgen. This page provides the corresponding upstream source revisions, WebCAE changes, and the files needed to rebuild the applicable modules with a modified library.
Licensing questions and written source requests:
info@webcae.comWebCAE relink kit
The archive contains the complete source of WebCAE's linked part, the exact link scripts, toolchain metadata, OCCT and Netgen patches, upstream-file checks, and rebuild instructions.
Download relink kitContents include
- executor_spike_web.wasm source closure: executor, protobuf translation unit, protobuf schema, headers, and topology headers
- exact upstream revisions and immutable source-archive links
- WebCAE patches and the OCCT WASM configuration example
- Emscripten version, link flags, SHA-256 manifest, and REBUILD.md
Complete corresponding upstream source
The full upstream trees are provided by the official repositories at the exact commits used for the shipped binaries. Apply the WebCAE patches from the relink kit to reproduce the modified build.
OCCT 7.9.1 — tag V7_9_1
36c80dbe7b199348e2f0a2d6932a462a37fd0b90
SHA-256: b2207b1199c6fd808028167b7ae5758aaab85ee20fbaaf5c193db32608670c11
Netgen 6.2.2404 — tag v6.2.2404
c488fa936ab5817d455a9bfe27d0c17c99933cc5
SHA-256: c9d546b4fbb429291c41013f7baf8b22d29c2143174b850aa5499519a51c96ff
Other MPL-2.0 components
The distribution also includes the following unmodified MPL-2.0 components. Their exact source forms are linked here; this does not apply the MPL to WebCAE proprietary code.
Licenses and shipped modules
OCCT and Netgen are distributed under LGPL-2.1; OCCT also has the Open CASCADE exception 1.0. They are statically linked into the WebAssembly modules listed in the product notice.
Relevant modules: executor_spike_web.wasm, netgen_spike_web.wasm, and occt_spike_web.wasm
Last updated: 12 August 2026