DiagSap is a tool to create Philippine-style word diagrams (DiagSap is short for “diagramang sapin-sapin” which is Tagalog for “layered diagram.”) The user documentation is availble here.

You can download 64bit installers for Windows, macOS, and Linux. The latest version is 1.3.0. This version enables you to set which keyboard to use for the various parts of the tree description. The Windows and macOS installers are also signed.

Windows is at https://software.sil.org/downloads/r/lingtree/DiagSap/DiagSap-1.3.0.exe

macOS is at https://software.sil.org/downloads/r/lingtree/DiagSap/DiagSap-1.3.0.dmg

Linux (22.04) is at https://software.sil.org/downloads/r/lingtree/DiagSap/DiagSap-1.3.0-22.04.deb

Linux (24.04) is at https://software.sil.org/downloads/r/lingtree/DiagSap/DiagSap-1.3.0-24.04.deb

Samples
A zip file containing some sample descriptions is available at https://drive.google.com/file/d/1Ci13NeW0PGXN_w3xOBPIhgN2jjciB0D7/view?usp=sharing.