MarkoBL is an independent developer whose open-source portfolio centers on Rosi, a lightweight runtime wrapper that compresses the entire .NET Core stack into one portable executable, eliminating the need for a separate framework installation on target Windows machines. By embedding the runtime, Rosi lets system administrators, DevOps engineers, and portable-app enthusiasts ship command-line utilities, micro-services, or GUI tools on locked-down corporate PCs, clean-room production servers, or USB sticks without worrying about missing prerequisites or version conflicts. Typical use cases include bundling internal diagnostic scripts for field technicians, containerizing legacy .NET utilities for cloud migration, creating single-file updaters for game mods, or distributing classroom coding exercises that run identically on every student laptop. Because Rosi exposes the full .NET Core API, developers retain access to modern language features, NuGet packages, and cross-platform libraries while end-users enjoy the simplicity of double-click deployment. The project is actively maintained on GitHub, welcomes pull requests, and is distributed under a permissive MIT license. MarkoBL’s Rosi is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always resolve to the newest release, and can be queued for batch installation alongside other applications.

Rosi

Rosi, the power of .NET Core in a single executable.

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