I'm looking for a log viewer, the most interesting feature for me is integration with IntelliJ and opening log from remote servers. It can be IntelliJ plugin or standalone application.
You can try OtrosLogViewer. This is a standalone application with IntelliJ integration. You can click on stacktrace fragment and IntelliJ will open selected class at pointed line. See screenshot below:
If you hover a mouse on stacktrace, code fragment will display as a tooltip:
You can check video with integration on youtube: youtube video
You can open logs from remote server using SFTP, FTP, SMB or HTTP(S). It's really usefull if your application is deployed on tomcat in data center and you tail logs live with ability to open class from stacktrace in IntelliJ or view code fragment in OtrosLogViewer.
Disclaimer: I am the author of OtrosLogViewer