Opensidian
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This is 1 of 135 launches in note-taking and writing apps — see how it stacks up on momentum and crowding →
78 other launches read as similar to this one →
Details
- External ID
- 50070286
- Source
- HN
- Company
- —
- Product
- Opensidian
- Website domain
- opensidian.org
- Launched
- Oct. 13, 2026
- Cohort
- —
- Upvotes
- 39
- Upvotes percentile
- 0.77
- Tags
- —
Enrichment
- Niche
- note-taking and writing apps
- Vertical
- Horizontal
- Function
- Workflow automation
- Audience
- Prosumer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- open-source obsidian client or alternative for note-taking
- Manually corrected
- False
Could you build this?
Partial The Tauri/web shell is simple, but building a fully compatible, high-performance Markdown vault editor with live bidirectional wikilinks and dynamic graph visualization in Rust requires non-trivial data structures and parsing.
What it would actually take: Built with Rust and Tauri v2, using a fast Markdown parser (like pulldown-cmark) and an indexed graph data structure (such as petgraph) to track wikilinks and backlinks across local filesystem files. The hard parts are maintaining near-instant file watching/synchronization, AST parsing of arbitrary Markdown extensions, and efficient graph layout algorithms for note visualization without Electron's memory overhead.
Discussion
7 comments analyzed.
Competitors mentioned: Obsidian
Concerns raised: Lack of plugin support prevents true competition, Cloning existing apps discourages commercial innovation, Obsidian already has no lock-in risk due to markdown files, Questions around copyrightability of clone
Feature requests: Plugin support
Competitors
Other products that read as similar to this one — 78 launches clear the similarity bar, closest 8 shown.
Attention rank: #18 of 79 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 212 days after the earliest competitor.
- opensas · github · 2026-09-09 · 8 upvotes · similarity 0.58
- OpenGoldHEN · github · 2026-10-06 · 105 upvotes · similarity 0.47
- database · github · 2026-09-17 · 24 upvotes · similarity 0.44
- open-intelligent-ui · github · 2026-10-08 · 331 upvotes · similarity 0.44
- OpenBRender · github · 2026-10-07 · 20 upvotes · similarity 0.43
- OpenPaste · github · 2026-10-06 · 26 upvotes · similarity 0.43
- OpenStore · github · 2026-10-05 · 56 upvotes · similarity 0.42
- OPENTenBase · github · 2026-09-25 · 11 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.