The system requirements for MIB Explorer are:
Java SE Runtime Environment (JRE) version 9 or later.
UDP transport and/or TCP transport
256 MB RAM
You can use the -Xmx option of the JRE the increase or decrease the maximum memory used by MIB Explorer. For example
java -Xmx512M -jar mxp.jar
will allow MIB Explorer to use up to 512MB of RAM.
~60 MB free hard disk space (JAR) distribution, with installer package that includes a Java Runtime Environment (JRE), space requirements are around 200MB.