head to head · open source
claude-seo vs line-harness-oss
claude-seo has 25,931 GitHub stars, 3,395 forks, 19 open issues and last shipped 2 days ago. line-harness-oss has 613 stars, 405 forks, 50 open issues and last shipped 2 days ago. claude-seo leads on adoption by 4,130% (25,931 vs 613 stars). claude-seo is written in Python under MIT; line-harness-oss is written in TypeScript under MIT. claude-seo has attracted 13% as many forks as stars, line-harness-oss 66%. line-harness-oss was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (marketing-automation), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| claude-seo | line-harness-oss | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 613 |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-01 | 2026-11-01 |
| Forks | ⑂ 3.4K | ⑂ 405 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-seo if
- You weight community size — 26K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick line-harness-oss if
- You want the line-harness-oss feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and line-harness-oss fits your workflow better
About claude-seo
Claude SEO: SEO Skill for Claude Code Claude SEO is an open source SEO analysis plugin for Claude Code. It runs 25 sub skills and 18 specialist agents in parallel across technical SEO, content quality (E E A T), Schema.org markup, AI search optimization (GEO), local SEO, e commerce, and international SEO. Every audit produces a prioritized action plan with testable recommendations grounded in primary source guidance from Google. Two versions of this skill. 🌐 Public open source → AgriciDaniel/claude seo : MIT, public releases, no membership. Use this if you want stable + downloadable. 🔒 Community private mirror…
read the full claude-seo overview →
About line-harness-oss
🌐 日本語 English 简体中文 한국어 Español L Harness 名称について: 2026年8月19日から製品表示名を「L Harness」に統一しました。 既存導入を壊さないため、リポジトリURL、 create line harness 、 @line harness/ は互換識別子として維持します。詳細はBRAND.md。 LINE で無料体験する 👈 LINE 公式アカウントの完全オープンソース CRM。 L社 / U社 の無料代替 。 L Harness本体のソフトウェア利用料は 0円 です。LINE公式アカウントの配信料金、Cloudflareの契約・利用量、独自ドメイン、導入・保守、接続する外部AIサービスの費用は別です。Claude CodeからMCP経由で操作できます。 費用の条件は開発元の公式料金説明で確認できます。Cloudflare D1の無料プランは日次の読み書き上限に達するとクエリがエラーになり、有料プランの超過課金とは挙動が異なります。外部AIを接続する場合は、たとえばClaudeのプラン・API料金を別に確認してください（2026年9月6日確認）。 ▶️ 動画で見る (YouTube・約20分) 現バージョン : v0.21.0 ・ MIT License ・ TypeScript / Cloudflare Workers + D1 プラグインマーケット β…
read the full line-harness-oss overview →
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Frequently asked questions
Is claude-seo or line-harness-oss more popular?
claude-seo has 25,931 GitHub stars and line-harness-oss has 613. claude-seo has the larger community by that measure.
Are claude-seo and line-harness-oss free?
Both are open source. claude-seo is licensed under MIT and line-harness-oss under MIT. Neither carries a licence fee.
What is the difference between claude-seo and line-harness-oss?
claude-seo is written in Python and line-harness-oss in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, claude-seo or line-harness-oss?
Choose claude-seo if you want the larger community (25,931 stars) or its MIT licence terms. Choose line-harness-oss if its feature set, stack or MIT licence fits better. Both are self-hostable.