The LogDNA Agent v1 is our original agent, and is available for Windows, MacOS, and Linux. You can view and contribute to its source code on GitHub.
Be aware that version 2.1.0 of the Agent v1 drops support for Kubernetes.
LogDNA Agent v2 is now available for Kubernetes.
LogDNA Agent v2 now supports Linux, with the release of 3.3 Beta.