Products
AI Benchmark
Desktop
Mobile
Monthly visits
12.5K
Up36.9%MoMSep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
$31.16/mo
Higher than 79% of peersNiche median $15/mo
Creators
Kohei Ishikawa
@kohii00· 755 followers
Launched
17mo ago
2025-07-01 · Est.

Traffic

Monthly visitsData through Sep 2026 · Oct 2026 pending
Events1 change · 1 marketing move

Marketing moves

Launches, search & content, referrals, promotions
  • Launched on Show HN (3 pts)Launch

    SmoothCSV – CSV editor that opens 1M rows in 2s, with SQL queries — Hi HN, I'm kohii, a software engineer from Japan. I've been building CSV editors for 15 years. This is my third rewrite from scratch, buil…

    Feb 11 · 9mo agoLaunch page

  • Launched on Show HN (5 pts · 1 comments)Launch

    SmoothCSV – The Ultimate CSV Editor — Hey HN! I've been building CSV editors for 15 years. This is my third rewrite, and I think I finally got it right. Key features: - Excel-l…

    Jul 11, 2025 · 16mo agoLaunch page

  • Launched on Product HuntLaunch

    The ultimate CSV editor you've been waiting for

    Jul 1, 2025 · 17mo agoLaunch page

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Show HN
2025-07-11Source
Post excerpt:
Hey HN! I've been building CSV editors for 15 years. This is my third rewrite, and I think I finally got it right. Key features: - Excel-like operation for intuitive use - Equipped with basic to advanced tools necessary for handling CSV - Supports various formats and character encodings. Can handle CSVs with different column counts - Cross-platform (Windows/
Show HN
2026-02-11Source
Post excerpt:
Hi HN, I'm kohii, a software engineer from Japan. I've been building CSV editors for 15 years. This is my third rewrite from scratch, built with Tauri, Rust, and web technologies. *Why I built this:* Modern dev tools, that I use daily, are incredibly polished. CSV editors, not so much. I wanted a tool that handles CSVs as they are (messy column counts, vario

Open Source & Agent Ecosystem

GitHub · MCP / Skill
Last commit 2026-10-16
GitHub Stars
★ 451
Forks
3
License
See repository
Primary language
—

Agent, MCP & Developer Integration

CLI / SDK
Integration docs
Browse developer & CLI tools →

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Organic Search68%
  • Direct25%
  • Referrals6%
  • Other1%

Countries

  • Japan65%
  • United States10%
  • Germany6%
  • France5%
  • Italy5%

Search

Domain authority —Domain registered 2012-12-28

KeywordMonthly volume
csv editor2,860
smoothcsv1,010
smooth csv470
スムースcsv330
smooth csv .net framework280

Traffic data: Vaneform

Pricing

Single User
$31.16/once
Team
$31.16/once

Trial: None · 2 paid tiers ($31.16) · Observed 2026-11-04 · Pricing page

Entry price $31.16/mo, Higher than 79% of peers; “Spreadsheets & Data Analysis AI” median is $15/mo.View pricing benchmark

Pages & changes

Tracked since 2025-07-01

Key pages

Weekly snapshots

Changes

  1. Nov 1 · 13d ago

    Homepage title changed to “The ultimate CSV editor & viewer for Mac, Windows, Linux | SmoothCSV”Positioning

    SmoothCSV - The ultimate CSV editor for macOS & Windows→The ultimate CSV editor & viewer for Mac, Windows, Linux | SmoothCSV

Design

First-screen visual analysis & :root CSS

Minimal Monochrome (Light canvas, balanced density) featuring centered headline + cta layout and product ui screenshot / component visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“The Ultimate CSV Editor”

Centered Headline + CTA hero structure paired with download app / install extension CTA and live generated output showcase.

Conversion path: Centered Headline + CTA + Product UI Screenshot / Component → Download App / Install Extension · Trust bar: Live Generated Output Showcase

Palette · click to copy

5-D design score7.5 / 10
Typography
8.0
Color & Contrast
7.0
Layout & Spacing
8.0
Craft & Polish
8.0
Distinctiveness
6.0

Structure

Fonts
Arial / monospace
Primary visual
Product UI Screenshot / Component
Social proof
Live Generated Output Showcase
Navigation
Full-Width Top Bar
Theme & density
Light · Balanced
Corners & depth
Medium Radius · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Minimal Monochrome (with Precision Swiss Grid)

Monochrome palette with a single accent color, hairline dividers, and generous whitespace.

## Design Tokens

```css
:root {
  --background: #ffffff;
  --surface: #f7f7f7;
  --foreground: #222222;
  --muted-foreground: #6f7479;
  --accent: #078e7d;
  --radius: 8px;
  --font-heading: "Arial", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Arial", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "monospace", ui-monospace, monospace;
}
```

Color area ratio: Background #FFFFFF (~77%) · Surface #F7F7F7 (~10%) · Text #222222 (~7%) · Muted Text #6F7479 (~4%) · Accent #078E7D (~2%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Centered Headline + CTA
- Navigation: Full-Width Top Bar
- Theme & density: Light · Balanced
- Border radius & elevation: Medium Radius; use elevation shadows to separate layers
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Download App / Install Extension · Trust bar uses Live Generated Output Showcase
- Headline hook: Category Positioning Anchor
- Hero components: Large Hero Product Shot
- Spatial layout notes: Centered Headline + CTA hero structure paired with download app / install extension CTA and live generated output showcase.
- Visual summary: Minimal Monochrome (Light canvas, balanced density) featuring centered headline + cta layout and product ui screenshot / component visuals.

## Avoid

- Multi-stop neon gradients
- Heavy drop shadows
- More than one competing accent color

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.

Questions & evidence

How much does SmoothCSV cost?
Single User: $31.16/once; Team: $31.16/once. Observed 2026-11-04. Check the source for current billing terms, usage limits and taxes.Source
How much website traffic does SmoothCSV get?
Vaneform estimates 12.5K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is SmoothCSV and what platforms does it support?
SmoothCSV is catalogued under Spreadsheets & Data Analysis AI: The Ultimate CSV Editor. Supported platforms: CLI / SDK.
Is SmoothCSV open source?
SmoothCSV has a public repository (https://github.com/kohii/smoothcsv3) with its source repository published, recording 451 GitHub stars.Source

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