CSNOBOL4

An open source port of Macro SNOBOL4 (The original Bell Telephone Labs implementation, written in SIL macros) by Phil Budne.
Supports full SNOBOL4 language plus SPITBOL, Blocks and other extensions.

Portable to just about anything with an ANSI (C89) compiler.

See individual release pages for timing reports.

Releases:

2.3 March 31, 2022 (2.3.1)
2.2 December 8, 2022 (2.2.2)
2.1 June 28, 2020 (2.1.3)
2.0 January 1, 2015
1.5 October 1, 2013
1.4.1January 19, 2012
1.4 January 6, 2012
1.3 May 19, 2010
1.2 December 9, 2008
1.1 December 9, 2005
1.0 February 18, 2004