Created by the makers of CCleaner, Recuva features a completely free, unrestricted version for general file recovery on Windows.

With these details, I can point you directly to the or the specific open-source tool that fits your exact needs. Remo Recover Free Edition - Download

You can use the free version of Wondershare Recoverit to scan and recover up to 100 MB of essential documents. 2. Leverage 100% Free Open-Source & Freeware Tools

To help you get the best outcome for your specific problem, could you share a bit more context?