Ogrim

• About
• Features
• Documentation
• Licensing
  • Exceptions
• Copyright

About

Ogrim is a minimal spam protection system using a proof-of-work mechanism; use it to protect website forms, or rate-limit API requests.

Features

Configurable

All aspects of Ogrim can be configured by editing a TOML file.

Free and Open-Source

Ogrim can be redistributed and/or modified under the terms of the GNU Affero General Public License.

Frictionless Experience

CAPTCHA puzzles are detrimental to the overall user experience. Ogrim's proof-of-work mechanism targets bots and machines, not humans.

Minimal

Ogrim adheres to the Unix philosophy: do one thing and do it well.

Private

No cookies and no tracking, removing the need for a consent banner.

Self-Hostable

Ogrim can be self-hosted on your infrastructure, enhancing data sovereignty and privacy.

Simple Integration

Leveraging cryptography available in all modern browsers, integrate your applications with minimal code.

Documentation

For documentation, refer to the Ogrim Wiki.

Licensing

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.

Exceptions

This license does not apply to the following directories which contain vendored external packages:

• node_modules/
• vendor/

See the contents of the specific package for licensing information.

Copyright

Copyright © 2025 Foster Hangdaan