As of late 2021, the "Fallout 1 & 2 Character Editor" by Gizmo (hosted on GitHub Pages) is the most reliable online solution.
: If the editor fails to recognize the path because it is too long, copy your SAVE.DAT file directly to a shorter path (like your desktop), edit it there, and then move it back to the original folder. Essential Safety Tips Vad's FO Save Game Editor 2016-01-28 - No Mutants Allowed save editor fallout 1 2021
War never changes, but your SPECIAL stats can. As of late 2021, the "Fallout 1 &
Inventory editor, checksum bypass (Fallout doesn’t use checksums). As of late 2021
Comprehensive Guide: Fallout 1 Save Editors in 2021 and Beyond