This talk will cover the top 5 open source power ups that no mainframer should be without. This will be Z Open Community (aka z open tools) that is the open source port of bash, curl, openssl, vim, and more. The CBT toolkit that includes Zigi. ZTI for 3270 emulation for free in a PC terminal. Zowe Explorer extension for VS Code. Folks attending this course will get lots of material to take away and hopefully see things they didn't know were available, as well as use cases and scenarios to use them in and contacts and sites to learn more and stay engaged with the exciting movement of open source and mainframe