octo-deco
This tool comes with all the usual warnings, and all of the usual "no guarantee"s. I've found it fun to write, I've found it's a useful tool to help me understand decompression theory, and I would use it as a tool to plan decompression dives. I would always check decompression profiles against tables or another tool.
TL;DR:
Don't put your life in the hands of some idiot on the internet.
Contact info
License
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this program. If not, see https://www.gnu.org/licenses/.