When comparing LibreCAD vs Solvespace, the Slant community recommends LibreCAD for most people. In the question“What are the best open source CAD tools?” LibreCAD is ranked 1st while Solvespace is ranked 5th.
Ranked in these QuestionsQuestion Ranking
Pro Endorsed by FSF
Pro Fast and lightweight
Because of LibreCAD's focus on 2D geometry it can be fast and lightweight, the installer size is less than 30 Mb.
Pro Too fast startup
Starts within 2 seconds.
Pro Easy to learn
There are easy to understand commands that really help to getting started quickly. The application itself is surprisingly simplistic with easy to learn shortcuts, but extremely powerful.
Pro Available on Windows, Linux, OS X
Binaries are available for Windows and OS X. On Linux it needs to be built from sources.
Pro Open source
Pro Good tutorials
Pro Extremely light-weight
The latest version 2.3 is ~6MB size, the previous one was ~1.4MB - yes, Megabyte.
Pro Useful integration of keyboard shortcuts
Pro Does not require installation
The single executable can simply be launched.
Con No 3D
No 3D like FreeCAD.