There are several mailing lists for community discussion and troubleshooting.
The recommended way to get help with ImageJ is to use the Image.sc Forum.
Please search the list archives first to find any previous discussions regarding your problem.
If you have a natural allergy toward subscribing to mailing lists, there are other ways to get help, too.
Search for an existing bug before reporting a new one.
|ImageJ||For general user and developer discussion about ImageJ, mostly focused on ImageJ1. For a larger community of ImageJ2 and Fiji users, the Image.sc Forum is preferred.||Nabble||Archives|
Supporting and related software
|SciJava||For discussion of SciJava supporting libraries.||Archives|
|μManager||Micro-Manager: open source software package for control of automated microscopes.||Archives|