Nicheloom visits: 58,345 all-time · 7,637 in the last 7 days

The opportunity tracker for new startups.

Today: 1,008 launches · Niche of the day: specialized calculation tools · See what launched today →

Kosh

Bash shell runtime with 100x faster Shellcheck and LSP built-in

Get picks like this daily. Today's launch numbers, the top launches, AI and tech news, and a daily opportunity pick, straight to your inbox.

Want to reach these readers? Sponsor an issue.

Kosh is a Bash-compatible runtime focused on VERY detailed diagnostics and performance.The project started from frustration with how difficult shell errors can be to debug. And how slow some tools are.The project is feature-complete and the core is usable enough to experiment with. There is a Language Server that works on shell scrips, but I'm planning to expand it to support every conf/YAML/etc file that may have Bash embedded in, e.g. GitHub workflows.Report: bash incompatibility, broken diagnostics, cases where existing tools may solve the problem betterThanks!

HN · launched Aug 28, 2026 · 7 upvotes (top 59%) · 0 views

Niche: scripting and execution runtimes · 56 launches, 4 in the last 7 days · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Developer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

More like this: all 56 launches in scripting and execution runtimes →

Could you build this?

No Writing a full Bash runtime parser, interpreter, and high-performance language server protocol implementation from scratch requires compiler and shell semantics mastery.

What it would actually take: Typically written in Rust, C++, or Go, requiring complete POSIX/Bash grammar parsing (which has notoriously irregular syntax), AST construction, control flow graph analysis for Shellcheck diagnostics, and an LSP server. Requires deep expertise in formal language parsing, runtime interpreter architecture, and shell quirks.

Discussion

1 comment analyzed.

Competitors mentioned: Shellcheck

Feature requests: GitHub Actions YAML linting support

Competitors

Other products that read as similar to this one : 174 launches clear the similarity bar, closest 8 shown.

Attention rank: #93 of 175 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 296 days after the earliest competitor.

  • Grsh · hn · 2026-01-14 · 50 upvotes · similarity 0.58
  • luish · ph · 2026-10-27 · 1 upvotes · similarity 0.56
  • Shuck · hn · 2026-04-30 · 8 upvotes · similarity 0.56
  • Bashr.run · ph · 2026-10-31 · 1 upvotes · similarity 0.52
  • Jitzu · hn · 2026-02-17 · 6 upvotes · similarity 0.47
  • ShellTalk brings deterministic text-to-bash · hn · 2026-04-22 · 9 upvotes · similarity 0.47
  • gash · github · 2026-11-06 · 100 upvotes · similarity 0.46
  • Shifu · hn · 2026-03-30 · 7 upvotes · similarity 0.46

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.