Yes, that's what I thought you meant , but I wasn't sure.  Technically Scheme48 (one year older than Gambit) is still usable, but it's not under development.

On Thu, Jul 27, 2023 at 6:16 PM Marc Feeley <feeley@iro.umontreal.ca> wrote:
Oh I understand now that you question refers to this on the website: First released in 1988, Gambit is the third-oldest Scheme implementation still in use.

I would say

1) MIT Scheme
2) Chez Scheme
3) Gambit

Marc



> On Jul 27, 2023, at 6:14 PM, Marc Feeley <feeley@iro.umontreal.ca> wrote:
>
> The oldest was Rabbit, when Steele/Sussman invented Scheme. Second was probably MIT Scheme. Perhaps third was Scheme 84 from Indiana. Then it gets complicated (i.e. when is an implementation actually “born”).
>
> Marc
>
>
>
>> On Jul 27, 2023, at 5:43 PM, John Cowan <cowan@ccil.org> wrote:
>>
>> MIT must be the oldest.  What is the second oldest?
>>
>> On Thu, Jul 27, 2023 at 3:30 PM Marc Feeley <feeley@iro.umontreal.ca> wrote:
>> For those not on the Gambit gitter... Gambit v4.9.5 was released yesterday. You can get it from the github repo, or from https://gambitscheme.org .
>>
>> Marc
>>
>>
>>
>>
>> _______________________________________________
>> Gambit-list mailing list
>> Gambit-list@iro.umontreal.ca
>> https://mailman.iro.umontreal.ca/cgi-bin/mailman/listinfo/gambit-list
>>
>
>