head to head · open source
excelize vs claude-seo
excelize has 20,918 GitHub stars, 1,949 forks, 131 open issues and last shipped 2 days ago. claude-seo has 17,090 stars, 2,504 forks, 19 open issues and last shipped 7 days ago. excelize leads on adoption by 22% (20,918 vs 17,090 stars). excelize is written in Go under BSD-3-Clause; claude-seo is written in Python under MIT. excelize has attracted 9% as many forks as stars, claude-seo 15%. excelize was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai), 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.
← all 8884 open source comparisons
Side by side
| excelize | claude-seo | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 17K |
| License | BSD-3-Clause | MIT |
| Written in | Go | Python |
| Last push | 2026-09-16 | 2026-09-11 |
| Forks | ⑂ 1.9K | ⑂ 2.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick excelize if
- You weight community size — 21K stars and counting
- You want the BSD-3-Clause license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick claude-seo if
- You want the claude-seo feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and claude-seo fits your workflow better
About excelize
Excelize is a pure Go library for reading and writing XLAM, XLSM, XLSX, XLTM and XLTX spreadsheets, built for Go developers who need to generate or parse Microsoft Excel 2007 and later workbooks directly from their own code.
read the full excelize overview →
About claude-seo
Claude SEO is an open source SEO analysis skill for Claude Code that runs 25 sub skills and 18 specialist agents in parallel across technical SEO, E E A T content quality, Schema.org markup, AI search optimization, local SEO, and reporting, built for SEO agencies, in house SEO leads, and freelance consultants who need repeatable, testable audits rather than one off tool output.
read the full claude-seo overview →
More in Business Software
Related comparisons
More Marketing & Customer Engagement projects
Compare either of these against the rest of the Marketing & Customer Engagement field.
Frequently asked questions
Is excelize or claude-seo more popular?
excelize has 20,918 GitHub stars and claude-seo has 17,090. excelize has the larger community by that measure.
Are excelize and claude-seo free?
Both are open source. excelize is licensed under BSD-3-Clause and claude-seo under MIT. Neither carries a licence fee.
What is the difference between excelize and claude-seo?
excelize is written in Go and claude-seo in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, excelize or claude-seo?
Choose excelize if you want the larger community (20,918 stars) or its BSD-3-Clause licence terms. Choose claude-seo if its feature set, stack or MIT licence fits better. Both are self-hostable.