Files that contain the .esp file extension normally hold data files that have been generated by the Advanced Chemistry Development (ACD) analysis software. This specialized chemistry software is used by chemists to organize and analyze chemistry research data.
The Active Media Eclipse software application also uses the .esp file suffix. The ESP files that are used by this program contain screen saver project files that have been created with the software application.
Email Sentinel Pro also uses the .esp file extension. These ESP files contain protected email attachments that have been sent and received using the Email Sentinel Pro software program.
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