Downloading ISDAT 2.9 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Business Tools, more precisely Project Management. We recommend checking the downloaded files with any free antivirus. This free Mac app is an intellectual property of Lirfu. The most popular version of the software is 2.9. The bundle identifier for this app is se.irfu.isdat.
From the developer:
Isdat is a client-server system for accessing scientific data, primarily developed for and by the Wave Experiment Consortium on the Cluster satellites. The server part of Isdat has modules to read various kinds of data, which are then presented in a unified format to the clients. On the client side, there is a high-level generic browser client, igr, several specialized clients and APIs not only for C but also for Matlab, IDL and Java.
You may want to check out more software for Mac, such as Iron Sea Defenders, which might be related to ISDAT.