Free AutoLISP tools built by a designer, for designers. No plugins. No subscriptions. Download a .lsp file and run.

Auto-mark revision clouds for design changes Select old and new regions in the same DWG — red revision clouds appear instantly around every change. No more hand-circling. DFC DFCC DFCT

Scan any DWG and get a health score out of 100 8-point diagnostic dashboard — unused layers, unpurged blocks, file weight, xrefs — with one-click fix and MB savings display. DHS DHSFIX

One master block. Everything else syncs automatically. One base plan, multiple review versions (fire, accessibility, area). Change the master, run SyncNow — all child blocks update instantly. SyncNow SFM

Batch export all title block frames to individual PDFs Built for the Model Space workflow common in Taiwan and Asia. Pick a frame, set scale and output folder, export all sheets at once. BPDF

Draw one cut line. Let the algorithm build the rest. Instantly generate fully drafted, BIM-level vertical sections from 2D floor plans. Uses semantic ray-casting to auto-detect walls, parapets, and doors, while automatically generating slabs and 2cm plaster lines. SECDRAFT

One command. Every wall centerline, trimmed and closed. Scans the entire floor plan and auto-generates a clean centerline network for every wall — regardless of thickness variation, corner type, or drawing imperfections. The only AutoLISP implementation using ensemble voting and geometric intersection closing. WCL

1.  Download the .lsp file from any repo above
2.  In AutoCAD, type APPLOAD and load the file
3.  Run the command listed above

💡 Add to Startup Suite in APPLOAD for automatic loading every session.