As part of an adoption funding programme supported by the EU and building on experience gained through the GÉANT-led OCRE project, the EOSC Future project allotted a total of €4.8 million across three calls, aimed at bridging the gap between commercial service providers and researchers through the EOSC ecosystem. Specifically, the first call in the series awarded five projects for making commercial services more accessible to Research & Education communities via the EOSC Marketplace, to digital service aggregators (e.g. non-profit entities, NRENs, RIs and e-Infrastructures, HPC centres, etc.) teaming up with OCRE cloud service providers. OpenScienceLabs (OSL) enable the sharing of HPC code and results using cloud technology. It provides a universal wrapper for running code in the browser, with access to parallel or special purpose hardware. OSL utilises cloud-native methods and DevSecOps practices, such as containerisation, orchestration, automation, and security measures. It simplifies usage for new or non-expert users by eliminating the need for compilation, installation, or operational tasks. With OSL, end-users can access the system within minutes through a web browser. After an initial co-development phase, any HPC codebase can be made compatible with OSL. The OSL design is continuously improved through use-cases like Peer Review-Companions, Outreach, Open Sourcing, Self-Service On-boarding, and HPC-Summer Schools. These use-cases help enhance usability, scalability, and portability of OSL.