Collect, read, annotate, and fully preserve what matters. Open-source, self-hostable bookmark manager with full-page archival.

OKF is an open, human- and agent-friendly format for representing knowledge — the metadata, context, and curated insight that surrounds data and systems. It is designed to be authored by people, generated by agents, exchanged across organizations, and consumed by both.

The format is intentionally minimal: a directory of markdown files with YAML frontmatter. There is no schema registry, no central authority, and no required tooling. If you can cat a file, you can read OKF; if you can git clone a repo, you can ship it.

A second brain for the AI era. Free forever.

A specification for treating folders of markdown files as typed, queryable data collections.

Open Notebook is the cognitive partner you always wanted and could never explain why. It combines the power of AI with unwavering privacy controls. It's designed for researchers, students, and professionals who want to enhance their learning and abilities while maintaining complete control over workflows, models, and how their data gets used and exposed.

a federated discussion and link aggregation platform, similar to Reddit, Lemmy, Mbin interoperable with as much of the fediverse as possible.

The free and flexible app for your private thoughts.

Comprehensive task and note management with calendar integration for Obsidian