head to head · open source
excelize vs Sendune
excelize has 21,036 GitHub stars, 1,984 forks, 131 open issues and last shipped yesterday. Sendune has 2,304 stars, 144 forks, 2 open issues and last shipped 5 months ago. excelize leads on adoption by 813% (21,036 vs 2,304 stars). excelize is written in Go under BSD-3-Clause; Sendune is written in TypeScript under MIT. excelize has attracted 9% as many forks as stars, Sendune 6%. excelize 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
| excelize | Sendune | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 2.3K |
| License | BSD-3-Clause | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-11-02 | 2026-06-08 |
| Forks | ⑂ 2.0K | ⑂ 144 |
| 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 Sendune if
- You want the Sendune feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Sendune fits your workflow better
About excelize
Excelize Introduction Excelize is a library written in pure Go providing a set of functions that allow you to write to and read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and writing spreadsheet documents generated by Microsoft Excel™ 2007 and later. Supports complex components by high compatibility, and provided streaming API for generating or reading data from a worksheet with huge amounts of data. This library needs Go version 1.25.0 or later. The full docs can be seen using go's built in documentation tool, or online at go.dev and docs reference. Basic Usage Installation If your…
read the full excelize overview →
About Sendune
💌 Free, Open Source, HTML Email Editor and Designer. 👹 Who? This email designer was originally built for use within SENDUNE (formerly Send With SES). ⁉️ Why Choose SENDUNE Email Designer? Truly Open Source: Use it for personal use or commercial use or whatever. Truly Free: Because the ones that say 'free', are not. Truly Works: Because the ones that are free don't seem to work. Truly HTML: No intermediate code wranglers like mjml. Truly Fast and Light Weight: Because you have better things to do with your time. Truly No Code: Design like a pro without coding headaches. Our minimal interface gets out of your…
read the full Sendune overview →
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Frequently asked questions
Is excelize or Sendune more popular?
excelize has 21,036 GitHub stars and Sendune has 2,304. excelize has the larger community by that measure.
Are excelize and Sendune free?
Both are open source. excelize is licensed under BSD-3-Clause and Sendune under MIT. Neither carries a licence fee.
What is the difference between excelize and Sendune?
excelize is written in Go and Sendune 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, excelize or Sendune?
Choose excelize if you want the larger community (21,036 stars) or its BSD-3-Clause licence terms. Choose Sendune if its feature set, stack or MIT licence fits better. Both are self-hostable.