Free Software for Solaris
PostgreSQL
PostgreSQL, or Postgres for short is a widely popular, free and open-source relational database management system. PostgreSQL is available for all major operating systems including macOS, Linux, Windows, BSD and Solaris. The project has been in active development for over 30 years now, and powers many of the applications you use on a daily basis.
Syncthing
Syncthing is a free and open-source continuous file synchronisation software that utilise peer-to-peer technology. The software allows users to send files between two or more computers in real time, safely protected from prying eyes. Syncthing is available for Windows, Mac, Linux, Android, Solaris, and BSD.
GnuCash
GnuCash is a free and open-source accounting software that implements a double-entry bookkeeping system. The software is mostly used by small businesses or people doing personal accounting. Its designed to be easy to use, yet powerful and flexible and is available for Linux, BSD, Solaris, macOS and Windows.
Darktable
Darktable is a free and open-soource photo editing software created for photographers, by photographers. Darktable is specifically designed for non-destructive raw photo post-production editing. The Darktable development community is comprised of avid photographers that has a good understanding of real world problems, challenges, and workflows.