I know it is a crowded space, but still, I wrote Kimün: it works seamlessly with any Obsidian vault with the basics for note taking and navigation such as: * Markdown links * Wikilinks * Backlinks

In addition to that, it supports a query syntax that allows you to search filtering by markdown headings, so you can search notes that have text under #this_header, in addition of links, backlinks, free text with wildcards, and more. The search is decently fast.

Ah, and it is a TUI app, runs on your terminal and supports Vim either by emulating the movement keys, or by using Neovim as the backend. There are way more features (MCP and skills bundled for note management, MD syntax highlight, etc).

Finally, the core of Kimün is published as a crate (https://crates.io/crates/kimun_core), so you can use it for your own Rust project if you don't like the app, but want to embed something that supports Obsidian-like vaults.

Note, in case someone's curious: Most of the core was hand-written. The UI on the other hand has been coded with a fair amount of help from Claude and my own reviews.