You have a folder of loose notes and want to connect them by topic instead of filing them away. Obsidian 1.15.0 for Windows is built for that kind of work, and the tags in its listing point to backlinks, bi-directional links, blocks and graphs.
Obsidian as a project by one developer
The developer is Obsidian, with a website at obsidian.md. The app falls under note-taking and carries a proprietary license. It is free to download.
Editor, links and the Bases filters
Obsidian is a private, flexible writing app. Its tags cover editor, document, knowledge and graph use. The latest update adds Bases filter reordering and Mermaid diagrams that follow your theme.
Windows package, size and release date
The package ID is Obsidian.Obsidian and version 1.15.0 was released on November 2, 2026. The installer is 323.9 MB.
What's new in 1.15.0
Mermaid diagrams now render with a new library called Pele, load faster and use your theme colors and fonts. Bases filters can be dragged into a new order, and URI and CLI commands can append or prepend content under a heading.
Obsidian pros and cons
Pros
- Free to download
- Mermaid diagrams use theme colors and fonts and can be zoomed and panned
- Bases filters can be reordered by dragging
- Suggestions ignore accent marks, so cafe matches café
- Listing tags cover backlinks, graphs and blocks
Cons
- The 323.9 MB download is large for a note app
- The license is proprietary
- No visual preview is offered on this page
Is Obsidian safe?
The Windows installer for Obsidian 1.15.0 is fetched straight from github.com, the official host, so nothing passes through our servers. Obsidian is published by the developer of the same name (obsidian.md) under a proprietary license, and the app costs nothing.
How to install Obsidian
- Press the download button to get the official file.
- Run the installer you saved and confirm the Windows security prompt if the publisher matches.
- Follow the setup steps, then start Obsidian from the Start menu.
