| APS III | ⊕ 1960 | ⊕ Generalised programming | ⊕ United States | ||
| DUMBO | ⊕ 1957 | ⊕ Other US historic | ⊕ United States | Babcock and Wilcox interpreter/compiler for Burrough Datatron 205 | |
| IT | ⊕ 1955 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Low-level Autocoders | ⊕ United States | Internal Translator mathematical autocoder |
| PIT | ⊕ 1958 | ↓ ↑ ⊕ Specialised Languages | ⊕ Intermediate languages and VMs | ⊕ United States | Intermediate language for Internal Translator |
| SPIT | ⊕ 1958 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ United States | Intermediate language for IT |