EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No. 333-39627 and No. 33-65786 of Datawatch Corporation on Form S-8 of our report dated November 19, 1999 appearing in the Annual Report on Form 10-K of Datawatch Corporation for the year ended September 30, 1999. /s/Deloitte & Touche LLP - --------------------------------- Boston, Massachusetts December 27, 1999