CAD Forum block libary
Thousands of free CAD blocks and symbols (2D+3D) for AutoCAD (DWG), Revit (RFA) and Inventor (IPT). Categorized download and upload.
https://www.cadforum.cz/catalog
CAD Hatch, Free AutoCAD Hatch Patterns
A CAD hatch library including a selection of over 297 free AutoCAD hatch patterns. The CAD library includes free Autodesk CAD wood patterns, free stone hatches, brick hatch patterns, geometric patterns and many scales of each design.
https://www.cadhatch.com/
M8Tools Home
Computers, CAD and CAM, AutoCAD, Applications - M8Tools.com. Shareware AutoCAD Utilities to Change, Plot, and Purge multiple drawings, or to create custom leaders.
https://www.m8tools.com/
Cadmus Software Solutions
Computers, CAD and CAM, AutoCAD, Applications - Cadmus Software Solutions. Software company offering a variety of commercial tools for use with AutoCAD 2000.
http://www.cadmus.ws/
AGT - Solutions for Civil Engineers and Surveyors
Computers, CAD and CAM, AutoCAD, Applications - Advanced Graphics Technology, Inc.. Software for Cogo, legal descriptions, TIN models, contours, and sections, based on AutoCAD and LandDesktop.
https://www.agtcad.com/
Design Software Sprinkler Program
Computers, CAD and CAM, AutoCAD, Applications - FireAcad Design Software. AutoCAD extension for fire sprinkler designers.
https://fireacad.com/