Nimmer's NimCalis is a Education::Teaching & Training Tools software developed by NimmerSoft. After our trial and test, the software was found to be official, secure and free. Here is the official description for Nimmer's NimCalis: Nimmer's NimCalis is teaching tool with picture, sound, and video-support for presenting exercises to students in language training primarily. Three types of exercises. WIth instant-feedback options and evaluation. Can be used for subjects other than languages. Teacher Module, Built-in Editor, UserTracking. In 3+1 (add your own) languages. Shareware $20. Schools/SIte license $30. 30 days trial period. By NimmerSoft. you can download Nimmer's NimCalis free now.