Linux on IBM Z and IBM LinuxONE use the s390x hardware architecture to run various Linux distributions, including SUSE Linux Enterprise Server (SLES), Red Hat Enterprise Linux (RHEL), and Ubuntu. Tens of thousands of software packages are tested and distributed through these projects, and various community distributions.
But for some applications, a team at IBM pays special attention to make sure they compile and run as expected (or better!). This work is often done as a collaboration between the open source projects themselves and the team at IBM. This effort is an on-going collaboration with every release of the software needing to be validated.
Welcome to our monthly report!
For the month of July 2025, the team worked to also validate recent versions of the following:
- Apache Cassandra
- Apache Hbase
- Apache HTTP Server
- Beats
- CockroachDB
- Cruise Control
- Elasticsearch
- Erlang
- Grafana
- Kibana
- Libunwind
- Logstash
- MongoDB Driver - CXX
- MongoDB Driver - Ruby
- Netty-tcnative
- NGINX Ingress Controller
- OPA
- PHP
- RabbitMQ
- Ruby
- SonarQube
- Spire
The full list of validated software to date is available here: https://www.ibm.com/community/z/open-source-software/
July marked our first month with GitHub Actions for IBM Z and LinuxONE support starting to land for our first cohort of public open source projects! This included Ruby projects zlib, psych, and prism, Rust projects compiler-builtins and stdarch, and CI for StackRox. We have several more projects in the queue to work with over the coming months, but if you wish to learn more you can check out our announcement. Last month we also saw several s390x-related updates from the ngrok project, including addition of java-ngrok binaries (noted in the v2.3.16 release), release of the Python wrapper for ngrok, and finally ngrok container images! And last but certainly not least, FlatCC (FlatBuffers in C for C) has added a weekly CI job for s390x.
Looking for open source software that's not maintained by this team? Visit the Open Mainframe Project Software Discovery Tool to search for what you're looking for across a number Linux distributions. And there are always folks from IBM and beyond working to enable more projects that we don't even know about!
Are you a developer for an open source project interested in seeing your application made available to users on Linux on IBM Z and IBM LinuxONE? Your first stop should be the IBM LinuxONE Community Cloud where you can sign up for a free virtual machine for 120 days where you can see how your application runs, and discover for yourself what you may need to change to get it to run well on Linux on IBM Z and IBM LinuxONE.
If you wish to have permanent virtual machines for development, testing, or to add to your CI system, you can fill out this form to apply for resources for your project.