| Language | First appeared | Developer |
|---|---|---|
| Structured Audio Orchestra Language | — | — |
| Swift | 2014 | Chris Lattner, Apple Inc. |
| SYMPL | — | — |
| T | 1982 | Stephen Slade |
| Tcl | 1988 | John Ousterhout |
| TUTOR | 1969 | — |
| TypeScript | 2012 | Microsoft |
| V | 2019 | — |
| Vala | 2006 | Jürg Billeter |
| Varphi Language | 2025 | — |
| Vilnius BASIC | 1985 | — |
| Vimscript | — | — |
| Visual Basic .NET | 2001 | Microsoft |
| Visual Prolog | — | — |
| Web Language | — | — |
| WebAssembly | 2015 | World Wide Web Consortium, Mozilla, Google, Apple Inc., Microsoft |
| Whiley | 2010 | — |
| Wolfram Language | 1988 | Stephen Wolfram, Wolfram Research |
| XL | 2000 | Christophe de Dinechin |
| XOTcl | 2000 | — |
| Xtend | 2011 | TypeFox GmbH |
| Zeno | — | — |
| Zig | 2015 | Andrew Kelley |
| Zonnon | 2000 | — |