# LightNote

> Lightweight code and notes editor for Windows where Markdown notes, source code
> and AI agents live together and talk to each other. Native C++20 / Qt 6 Widgets,
> CPU-only rendering, no Electron and no bundled browser: under 50 MB of RAM idle.
> Everything is stored locally, in open formats, on the user's own disk.

LightNote is built around two pillars. As a **PKM / second brain** it handles
Markdown with wikilinks, backlinks, a connections graph, daily notes, tasks
(Kanban and Gantt), typed note properties and saved queries. As a **cockpit for
AI coding agents** it runs local AI CLIs in an integrated terminal, exposes the
workspace to them through an MCP server, isolates their sessions in a git
worktree, and answers questions over the user's own notes with local RAG
(lexical BM25 index plus optional embeddings).

It also opens what a plain editor usually cannot: Parquet, CSV, JSON and Excel as
queryable tables via DuckDB, PDF, ZIP archives browsed as folders, SQL database
connections, SSH/SFTP sessions and HTTP API tests — each as a regular tab.

Two editions, same features: **LightNote** (free, distributed as a ZIP and an
installer on GitHub Releases) and **LightNote Core** (Microsoft Store, with
auto-update). Author: NGLCZR. Site and documentation are mirrored in 10 languages.

## Documentation

- [Complete help — English](https://lightnote.com.br/llms-full-en.txt): every feature, as Markdown. Best single file to read.
- [Complete help — Portuguese (Brazil)](https://lightnote.com.br/llms-full.txt): same content, original language of the project.
- [Help page — English (HTML)](https://lightnote.com.br/ajuda-en): same content rendered, with a table of contents.
- Other languages follow the same pattern: `llms-full-<code>.txt` and `ajuda-<code>`, where `<code>` is one of: en es de fr it ja zh ko ru.

## Product pages

- [Home — English](https://lightnote.com.br/en): features, screenshots and download links.
- [Home — Portuguese (Brazil)](https://lightnote.com.br/): original language of the project.
- Other languages: `https://lightnote.com.br/<code>` with the codes listed above.

## Download

- [GitHub Releases](https://github.com/nglczr/LightNote-Community/releases/latest): free edition, ZIP and installer for Windows 10/11.
- [Microsoft Store](https://apps.microsoft.com/store/detail/9N413D9JQ6M6): LightNote Core edition, with auto-update.

## Optional

- [Privacy policy](https://lightnote.com.br/privacy): what the app does and does not send over the network.
- [License](https://github.com/nglczr/LightNote-Community/blob/main/LICENSE.pt-BR.md): proprietary EULA.
- [Community](https://github.com/nglczr/LightNote-Community/discussions): questions, bug reports and feature requests.
- [Tool catalog](https://lightnote.com.br/catalog/tools.json): JSON the app downloads to suggest AI CLIs, shells, interpreters and database drivers.