The ONI Seed Browser aimed to serve as an open-source alternative to ToolsNotIncluded.net, which had been speculated to cease operations by the end of 2023.
However, Cairath, the developer of ToolsNotIncluded.net, revealed at the beginning of 2024 that the service would be restored, rendering the need for a replacement obsolete at the time of writing.
If you are interested, you can explore my browser-based ONI save parser instead: