S7 Scheme
Ranked 4 of 5 scheme implementations by recommenders
People recommend S7 Scheme as a small, easy-to-embed Scheme: one header and C file, with no extra foot guns. No criticism recurs in the quotes.
People recommend S7 Scheme as a small, easy-to-embed Scheme: one header and C file, with no extra foot guns. No criticism recurs in the quotes.
7 people gave an opinion
- recommend it
- 7
- criticize it
- 0
- approval share
- 100%
Recommended in 4 of 13 months
- November 2025: recommended
- December 2025: not recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- Nobody criticizes itNeeds 2 to 1 or better, met.
- Recommended in 4 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Easy to embed in C programs
“the simplicity of embedding s7 with just one header and C file made me go with it now”
Comment from 12 Aug 2026 in “Chicken Scheme 6.0 Released” “It also comes as a single C file, which makes it easy to embed.”
Comment from 5 Feb 2026 in “Why S7 Scheme?” “s7 made a good impression for embedding it”
Comment from 11 Aug 2026 in “Chicken Scheme 6.0 Released” - Comment from 11 Aug 2026 in “Chicken Scheme 6.0 Released”
Succinct code and less duplication
“It was marvelous for succinct code, fast running tests and really helped slim down duplication”
Comment from 5 Feb 2026 in “Why S7 Scheme?” “the choice of s7 has worked out really well”
Comment from 5 Feb 2026 in “Why S7 Scheme?” Intuitive with few pitfalls
“I find it much more intuitive then something like Lua or even embedded python.”
Comment from 5 Feb 2026 in “Why S7 Scheme?” “it was great to not have any additional foot guns there”
Comment from 5 Feb 2026 in “Why S7 Scheme?”
Other scheme implementations people recommend
The four most recommended other scheme implementations, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Chicken Scheme | 25 | 2 | 93% | 10 | 3 yrs3 owners | Approved |
| GNU Guile | 24 | 20 | 55% | 10 | — | — |
| Chez Scheme | 23 | 5 | 82% | 7 | — | Approved |
| S7 SchemeThis page | 7 | 0 | 100% | 4 | — | — |
| Gambit Scheme | 5 | 1 | 83% | 4 | — | — |
What people said
14 of the 15 comments that mention it, newest first. Each links to the original comment.
“a less well knowned Scheme you will likely really like”
“the simplicity of embedding s7 with just one header and C file made me go with it now”
“s7 made a good impression for embedding it”
“fits into a lua shaped hole for scripting larger applications quite well”
“it was great to not have any additional foot guns there”
“It was marvelous for succinct code, fast running tests and really helped slim down duplication”
“I found S7 to be pleasant to work with also in regards to reporting errors etc”
“It's been great that way.”
“the choice of s7 has worked out really well”
“It's a lot easier to do music theory hacking and integrate with Max using a lisp 1”
“It also comes as a single C file, which makes it easy to embed.”
“I find it much more intuitive then something like Lua or even embedded python.”
“The s7 FFI is dead simple.”
“It's 100% ansi C and uses its own GC, so getting it compiled and running in WASM is very simple.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.