Open CASCADE Technology (OCCT)

PartMode is an open-source, local-first browser-based mechanical CAD application built on OpenCascade WebAssembly, replicad, and three.js. It provides constrained sketches, editable feature history, exact B-rep solid evaluation, multiple bodies, assemblies with mates and exploded views, drawings, inspection tools, and import or export for formats including STEP, STL, AMF, 3MF, SVG, DXF, and PDF. People work through the CAD interface, while permissioned typed agents operate against the same canonical document schema and exact geometry kernel. Browser-approved agents can edit the open project; a separate headless workflow uses an account-owned document. The application runs without a desktop CAD installation, supports anonymous local browser modeling with optional hosted agent connectivity, and is distributed under the GNU AGPL v3 license.

Replicad is a browser-based CAD library that provides a programmatic API for building 3D models with code. Videos describe it as a browser-facing CAD layer built on Open Cascade, indicating it leverages Open Cascade for core geometry and runs client-side.

text-to-cad is a library of agent skills for creating, inspecting, sourcing, slicing, previewing, and handing off CAD, CAE, CAM, robotics, and hardware-design artifacts from local project files. Its skills generate and edit CAD models from plain-language or image requests, primarily producing STEP files with optional STL, 3MF, and GLB exports; preview local CAD and robot files in a browser; source off-the-shelf STEP parts; and create DXF drawings from Python sources or CAD geometry. Additional skills write URDF robot structures, SRDF/MoveIt2 planning and collision data, and SDF simulator models and worlds; check DXF and STEP files for SendCutSend; measure mesh printability by wall thickness, overhangs, support volume, and build orientation; slice supported meshes into validated, printer-profiled FDM G-code using slicer command-line tools; and dry-run, upload, and cautiously start local Bambu Lab print jobs. An experimental implicit-CAD skill creates browser-native models with GLSL signed-distance fields and CAD Viewer raymarch rendering. The library is installed with the Skills CLI, including `npx skills add earthtojake/text-to-cad`, or through provider-native plugins for Codex, Claude Code, and Grok Build.

Colite is an experimental C++17 structure-from-motion and multi-view stereo system that reconstructs 3D scenes from overlapping images. Its pipeline performs incremental structure-from-motion with support for multiple models, continuation, and Sim(3) merging; feature extraction and matching; PatchMatch stereo with geometric consistency; stereo fusion; meshing; simplification; and texture-atlas generation. It produces COLMAP-compatible sparse models, RGB and normal dense point clouds, Poisson or Delaunay meshes, and textured OBJ models with MTL and atlas PNG files. CPU and optional CUDA implementations are provided for SIFT, descriptor matching, and PatchMatch Stereo, and resumable stage manifests allow processing to continue from saved stages. The repository describes the current build as alpha-quality, primarily developed and tested on Ubuntu 22.04 and WSL2; native Windows builds are not yet validated as a supported release target.

OpenCode is an open-source AI coding agent developed by anomalyco. It is used as a terminal-based coding agent and external coding harness, with a beta desktop application also available. The CLI includes a full-access build agent for development work and a read-only plan agent for code analysis and exploration; the plan agent denies file edits by default and asks permission before running shell commands. OpenCode also provides a general subagent for complex searches and multistep tasks, and can be installed through its shell installer, package managers, or platform-specific desktop packages.