Dr Shivamurthy Swamiji of
Sri Taralabalu Jagadguru Brihanmath, Sirigere - 577 541
Karnataka, India, has developed a software
Ganakastadhyayi for PC-Win95/98/XP (not for NT) use for broader study of Panini's Ashtadhyayi.
It includes pada-paaTha, Vrittis, and explanation.
The newer version
has the option of selecting Roman script or Devangari script. The Vrittis in Siddhanta Kaumudi and Laghu Kaumudi will also be given seperately. The data is being revised and updated. This also includes explanation on sandhi system.
Panini's Ashtadhyayi or suutrapATha is also available in Sanskrit in different formats among major works.