SNOBOL4+ user notes
- Information for people having documentation for the Vanilla SNOBOL programming language and wishing to use SNOBOL4+. By Michael Davis.
- http://www.sachsdavis.clara.net/Snobol4Pdoc.html

SNOBOL Language Web Page
- Introduction to SNOBOL Programming Language.
- http://cs.fit.edu/~dclay/cse5040/snobol.html

SNOBOL4 Resources
- Information and links about SNOBOL4.
- http://www.snobol4.org/

Macro Implementation of SNOBOL4 in C
- A port of Macro SNOBOL4 (The original Bell Telephone Labs implementation, written in SIL macros) for machines with 32-bit (or larger) pointers. Supports full SNOBOL4 language plus SPITBOL and other extensions.
- http://www.snobol4.org/csnobol4/

SNOBOL4 and SPITBOL Information
- Catspaw Inc's SNOBOL site.
- http://www.snobol4.com/