Open and hackable
The direction begins with familiar sketch, extrude, cut, fillet, and constraint workflows on an open geometry stack.
Open-source · local-first · Windows
ExcelsisView
One desktop viewer for DXF, DWG, regular PDF, and supported 3D PDF documents, with document parsing kept local and risky native work isolated from the application UI.
Support open releases, format testing, and security review work.
Support the workCurrent release · 1.1.44
The audited Viewer release is available.
Version 1.1.44 passed licensing, corresponding-source, packaged-byte, dependency, containment, security, and privacy gates. Tabs show up to five trailing folders when space permits, and tab-body right-click offers a guarded Open folder action. Folder file lists overlay the current DXF, DWG, PDF or 3D PDF editor without blanking it. Tile switching, drawing centering and overview preview reuse are improved. Folder tabs and independent editing sessions retain guarded file actions and keyboard navigation. The prior buffered DXF/DWG pan and zoom, Recents-first toolbar, and centered PDF folder-file pager remain. The included LibreDWG fix restores nested and forward-referenced DWG block geometry after older polyline sequences. The manual Helper macro-update button retains verified downloads, backups, and a SOLIDWORKS restart prompt when a macro is locked. Prior 3D PDF navigation, same-size DXF editing, Windows network-thumbnail policy, Left/Right file navigation, PDF Mirror/Scale, and recoverable Rename/Delete remain available. The thumbnail policy affects all network folders for that Windows user when Windows permits the write.
Windows notice: the installer is unsigned and may trigger SmartScreen. Kaspersky 21.26 scanned the exact release bytes with zero detections or suspicions. Verify the published SHA-256 before running it.
CAD and PDF in one application
Inspect common engineering documents without uploading them.
ExcelsisView combines DXF workflows, DWG conversion, regular PDF tools, supported 3D PDF viewing, and read-only thumbnail machinery in one Windows application.
- DXF selection, measurement, offsets, sized chamfers/fillets, contour repair, mirroring, and feature review.
- DWG handling through the open-source LibreDWG toolchain.
- Regular PDF viewing plus supported 3D PDF model display.
- Bounded, read-only thumbnails and local document processing.
Security boundary
Untrusted native parsing belongs outside Electron.
Native DWG and 3D-document parsing is designed to run in a zero-capability Windows AppContainer with process, time, memory, input, and output limits. Renderer sandboxing, ASAR integrity, native-file integrity checks, and blocked network permissions add defense in depth.
Each public release is expected to include the complete corresponding application source, exact third-party source and notices, installer checksums, and a candid statement of signing and scan status.
Excelsis3D plans · dev help wanted
From document viewing toward open parametric CAD.
The longer-term goal is an open CAD workflow in which images, prompts, dimensions, thread sizes, bounding boxes, and other constraints can become editable parametric features—without hiding the engineering model behind a black box.
Resilient references
Persistent engineering references are kept distinct from visible evaluated topology so model intent can survive more feature changes.
Development help wanted
CAD developers, UI contributors, security reviewers, file-format testers, technical writers, manufacturing users, and AI-coding experimenters are welcome. Planned directions include assemblies, CAM, FEM, semantic feature graphs, and AI-assisted modeling.
Support and development
Test carefully. Report clearly. Build openly.
Report reproducible problems, propose documentation improvements, contribute code, or help test representative non-confidential files. Please do not upload confidential customer or CAD documents to public issues.
Contact
Collaboration and general inquiries.
For collaboration, development, or general inquiries, email simonsystem609@gmail.com.
For bug reports, please use GitHub Issues; it is the preferred channel for reproducible problems. Do not email credentials or confidential files.