head to head · open source
duckdb vs line-harness-oss
duckdb has 42,747 GitHub stars, 4,176 forks, 858 open issues and last shipped yesterday. line-harness-oss has 613 stars, 405 forks, 50 open issues and last shipped 2 days ago. duckdb leads on adoption by 6,873% (42,747 vs 613 stars). duckdb is written in C++ under MIT; line-harness-oss is written in TypeScript under MIT. duckdb has attracted 10% as many forks as stars, line-harness-oss 66%. duckdb was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| duckdb | line-harness-oss | |
|---|---|---|
| GitHub stars | ★ 43K | ★ 613 |
| License | MIT | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 4.2K | ⑂ 405 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick duckdb if
- You weight community size — 43K stars and counting
- You want the MIT license terms
- Your stack matches C++
- 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 duckdb
DuckDB DuckDB is a high performance analytical database system. It is designed to be fast, reliable, portable, and easy to use. DuckDB provides a rich SQL dialect with support far beyond basic SQL. DuckDB supports arbitrary and nested correlated subqueries, window functions, collations, complex types (arrays, structs, maps), and several extensions designed to make SQL easier to use. DuckDB is available as a standalone CLI application and has clients for Python, R, Java, Wasm, etc., with deep integrations with packages such as pandas and dplyr. For more information on using DuckDB, please refer to the DuckDB…
read the full duckdb 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 duckdb or line-harness-oss more popular?
duckdb has 42,747 GitHub stars and line-harness-oss has 613. duckdb has the larger community by that measure.
Are duckdb and line-harness-oss free?
Both are open source. duckdb is licensed under MIT and line-harness-oss under MIT. Neither carries a licence fee.
What is the difference between duckdb and line-harness-oss?
duckdb is written in C++ 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, duckdb or line-harness-oss?
Choose duckdb if you want the larger community (42,747 stars) or its MIT licence terms. Choose line-harness-oss if its feature set, stack or MIT licence fits better. Both are self-hostable.