| Language | First appeared | Developer |
|---|---|---|
| Scheme | 1975 | — |
| SISAL | 1983 | — |
| Source | 2017 | — |
| Standard ML | 1983 | Robin Milner |
| SuperCollider | 1996 | — |
| Swift | 2014 | Chris Lattner, Apple Inc. |
| T | 1982 | Stephen Slade |
| Tcl | 1988 | John Ousterhout |
| Tea | 1997 | — |
| TXL | — | James Cordy |
| TypeScript | 2012 | Microsoft |
| Unlambda | 1999 | David Madore |
| V | 2019 | — |
| Varphi Language | 2025 | — |
| Vimscript | — | — |
| Visual Basic .NET | 2001 | Microsoft |
| Visual Prolog | — | — |
| Whiley | 2010 | — |
| Wolfram Language | 1988 | Stephen Wolfram, Wolfram Research |
| Wyvern | 2013 | — |
| XL | 2000 | Christophe de Dinechin |
| XOTcl | 2000 | — |
| XQuery | 2007 | — |
| Xtend | 2011 | TypeFox GmbH |
| Zig | 2015 | Andrew Kelley |