openscreen is a free GPU screen recorder for demos

openscreen is a GPU-accelerated screen recorder for Windows, macOS, and Linux. No watermark, no subscription fee, according to openscreen's GitHub repo. It's built for the exact job solo builders and small teams pay monthly for: recording product demos.

That matters because most polished screen-capture tools gate GPU encoding, watermark removal, or export quality behind a recurring charge. A free, cross-platform tool doing the same job removes a line item for anyone making demo videos often, whether that's a solo founder recording a launch video or a team producing onboarding content.

The project has picked up 2,623 stars, which says people are trying it, not that it's finished. It's also carrying 75 open issues. For a screen recorder, that list is worth reading before you commit. Bugs here show up as broken exports or dropped frames in the video you're about to publish, not as an abstract inconvenience.

Recording software has a narrow failure mode. It either produces a usable file or it doesn't, and you find out after the session is over. Before swapping out a paid tool, pull up the issue tracker and skim for your OS and your GPU vendor. Cross-platform, GPU-accelerated tools tend to carry driver-specific edge cases, and a project at this size is popular enough to have real usage but young enough that not every combination has been shaken out.