SolveSpace is a free (GPLv3) parametric 3d CAD tool. Applications include:
Major new stable release. Includes new arc and line length ratio and difference constraints, comments associated with point entities. Adds "exploded view" to sketches, and support for displaying measurements in "feet-inches". Adds a pitch parameter to helix extrusions. Allows use of Point and Normal to define a new workplane to sketch in. Adds live updating of Property Browser while dragging the sketch, and active links for all points, normals, and vectors in the Property Browser. Adds the ability to link STL files into a model. Includes a variety of UI improvements. Speeds up complex sketches by up to 8x and doubles the maximum unknowns.
Major new stable release. Includes new intersection boolean operation, new types of groups, solid model suppression, usability improvements (especially regarding redundant constraints and automatic constraints), and more. Also includes performance and scalability improvements.
Second release candidate for the 3.0 stable release.
First release candidate for the 3.0 stable release.
Bug-fix release in the 2.x series, fixing some crashes.
Bug-fix release, including performance improvements.
Introduced *nix compatibility, internationalization, technical drawing mode, improved import and export, and other features and fixes.