Coretime was acquired by Onesys from Sage Group PLC on 29th May 2020. Before this purchase, the product was known as ‘Sage Coretime'. Onesys are one of Sage's largest and most successful business partners with offices throughout the UK. Prior to this acquisition, Onesys had successfully supplied and supported many hundreds of Coretime customers over almost 20 years, having been appointed as the first reseller of the software in 2002.