# Is there a scheme implementation where the Garbage Collector is built within that Scheme?
**URL:** https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432
**Category:** Questions & Answers
**Created:** [December 19, 2024, 5:43am UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432 "2024-12-19T05:43:09Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@YongaTechnic](https://racket.discourse.group/u/YongaTechnic)
#### Post date: [December 19, 2024, 5:43am UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432/1 "2024-12-19T05:43:09Z")
I am looking for a scheme implementation where the garbage collector is not built in a low level system programming language like C, but within the scheme itself?
Can you point me in the right direction?
Thanks
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### Author:  [@OldDutchCap](https://racket.discourse.group/u/OldDutchCap)
#### Post date: [December 20, 2024, 1:39pm UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432/2 "2024-12-20T13:39:22Z")
Not sure if this answers your question or not but:
[https://www.more-magic.net/posts/internals-gc.html](https://www.more-magic.net/posts/internals-gc.html)
I think if you search for Garbage Collection implemented in Scheme you may find some worthwhile results. Just a suggestion, of course.
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### Author:  [@bremner](https://racket.discourse.group/u/bremner)
#### Post date: [December 20, 2024, 8:56pm UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432/3 "2024-12-20T20:56:24Z")
Yonga Technic via Racket Discourse
[notifications@racket.discoursemail.com](mailto:notifications@racket.discoursemail.com) writes:
> I am looking for a scheme implementation where the garbage collector is not built in a low level system programming language like C, but within the scheme itself?
>
> Can you point me in the right direction?
It's not intended for production, but the built-in "#lang plai/gc2"
teaching languages do support implementing GCs for (a restricted version
of racket) in racket.
d
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### Author:  [@hendrikboom3](https://racket.discourse.group/u/hendrikboom3)
#### Post date: [December 20, 2024, 11:01pm UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432/4 "2024-12-20T23:01:54Z")
It wasn't a scheme implementation, but I once wrote a garbage collector
for Algol 68 in a slightly extended version of Algol 68.
Only possible because Algol 68wa acompiled language and the code
that the compiler generated for the garbagecollector didn't need
any garbage collection itself.
I do not know where that code is now
-- hendrik
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### Author:  [@jay\_bird](https://racket.discourse.group/u/jay_bird)
#### Post date: [December 21, 2024, 1:52am UTC](https://racket.discourse.group/t/is-there-a-scheme-implementation-where-the-garbage-collector-is-built-within-that-scheme/3432/5 "2024-12-21T01:52:40Z")
Pre-Scheme's gc is written in Pre-Scheme, which is a statically typed restricted dialect of scheme for low level programming. Maybe that'd help?
> **[scheme48](https://codeberg.org/prescheme/scheme48/src/branch/main/scheme/vm)**
>
> A mirror of the Scheme 48 mercurial repositories - https://www.s48.org/
Some background, in case you don't know what pre-scheme and scheme 48 are all about:
[https://prescheme.org/posts/announcing-the-pre-scheme-restoration.html](https://prescheme.org/posts/announcing-the-pre-scheme-restoration.html)