| 2025-04-30 22:16:08 | ltk_tscc | Added Atari Bit Byter User Club as organiser of ABBUC Software Contest 2020 |
| 2020-11-14 22:28:14 | ltk_tscc | Set end date to 14 November 2020 |
| 2020-09-27 09:51:24 | ltk_tscc | Added competition Software |
| 2020-09-26 14:23:23 | ltk_tscc | Set start date to 1 April 2020, end date to 17 October 2020 |
| 2020-06-10 17:20:12 | ltk_tscc | Set website to http://www.abbuc.de/atari/software-ressort/81-software/softwarewettbewerbe/1846-software-wettbewerb-2020 |
| 2020-06-10 17:19:23 | ltk_tscc | Added party 'ABBUC Software Contest 2020' |