bnf by shnewto
Parse BNF grammar definitions
About bnf
From the project's README at github.com/shnewto/bnf. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://github.com/shnewto/bnf/actions) [](https://coveralls.io/github/shnewto/bnf?branch=main) [](https://crates.io/crates/bnf) [](https://crates.io/crates/bnf) [](https://docs.rs/bnf) [](https://github.com/shnewto/bnf/blob/main/LICENSE)
A library for parsing Backus-Naur form context-free grammars. Installation
The following grammar from the Wikipedia page on Backus-Naur form exemplifies a compatible grammar. (*Note: parser allows for an optional ';' to indicate the end of a production)
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 286 | github.com/shnewto/bnf |
| GitHub forks | 28 | github.com/shnewto/bnf |
| CRATES downloads (last month) | 8.6k | bnf |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 8.7 years | since Oct 2017 |
| Last commit | 5 months ago | Feb 8, 2026 |
| Releases shipped | 11 | last: 3.2 years ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
- N display of stupid, secret CISA credentials found in public GitHub rep
- Show HN: Alint, a fast linter for repository structure and hygiene
- Show HN: We built an AI strategy agent that runs consulting-style workflows
- Ask HN: How would you find early users for an AI trading assistant before MVP?
- Show HN: PrismoDev – local CLI for finding token waste in Claude Code/Codex
Ready to self-host bnf?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed Jun 21, 2026.
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