https://help.tallysolutions.com/docs/td9rel54/td9/release_notes/release_5_0/release_notes.htm

Tally.Developer 9 Release Notes

This page provides link to release highlights of all Tally.Developer 9 releases.

Rel. 6.4.1

Rel. 6.3

Rel. 6.2

Rel. 6

Rel. 5.5.6

Rel. 5.5.5

Rel. 5.5.3

Rel. 5.4.9

Rel. 5.4.8

Rel. 5.4

Rel. 5.0