| (S)PAR | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Bendix macro assembler |
| 1:1 Assembler | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assembler for Telefile |
| 94AP | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Sylviania symbolic assembler |
| 9AP | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Macros | ⊕ United States | Assembler autocode for the 709/0 |
| ABC I | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Datacorp high level assembler |
| ABL | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ 2G Autocodes | ⊕ United Kingdom | Atlas Basic Language |
| Aiken CPC translator | ⊕ 1948 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Proposed relay code for the Harvard Mark III |
| ALIAS | ⊕ 1973 | ↓ ↑ Excluded from Sammet | ⊕ Pascals | ⊕ Netherlands | Bliss variant |
| ALICS II | ⊕ 1967 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | ICS assembler |
| Amos Input System | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Halstead Autocode |
| ANCP | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Datatron autocode |
| APAR | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ External systems control | ⊕ United States | System for scientific control |
| APE(X)C | ⊕ 1950 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United Kingdom | Coding system for the APE(X)C |
| APX III | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Datatron autocode |
| ARC | ⊕ 1947 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United Kingdom | Assembler for Booth |
| Arin and Shpens | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ Latvia | Latvian Autocode |
| ASSEMBLER | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Modification of Rochester Assembler at IBM Poughkeepsie |
| ASSEMBLY | ⊕ 1951 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Rochester Asssembler for IBM |
| Asset-assembler | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Macros | ⊕ United States | |
| AUTOCODER | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | IBM generalised autocode |
| BAL | ⊕ 1971 | ↓ ↑ Excluded from Sammet | ⊕ Assemblers | ⊕ United States | IBM 360 assembly language |
| BALITAC | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | MIT Compiler for 650 |
| BAP | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | UC Berkeley IBM 701 assembler |
| BAS | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United Kingdom | Symbolic assembler for the ATLAS |
| BASIC AUTOCODER | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Simplified AUTOCODER |
| BELFAP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | FAP with extensive macro facilities |
| BELL | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Bell Labs Interpreters | ⊕ United States | Bell labs compilers |
| Bell SAP | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | SAP with conditional and recursive macros |
| BSS | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ United States | Relocatable binary form output from FORTRAN |
| Burroughs Assembler | ⊕ 1966 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | |
| CENTRAN | ⊕ 1975 | ↓ ↑ Excluded from Sammet | ⊕ Microprogramming and HLAs | ⊕ United States | High level macro assembler |
| CHIP | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Wright ADC Interpeter for the UNIVAC 1103 |
| COMPASS | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | |
| COMPILER I | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Boeing 1103A compiler |
| CYCLONE Initial orders | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | CYCLONE's initial orders |
| DAISY 201 | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | G-15 Autocoder |
| DAP | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assembler for CCC DDP 24 |
| DATACODE I | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Burrough compiler |
| DOI | ⊕ 1952 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | Wheeler |
| DOUGLAS | ⊕ 1952 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Douglas SM Macro-assembler |
| DOW COMPILER | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Dow Chemicals Autocoder |
| Dracula | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | CCC Symbolic assembler |
| DRUCO I | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | In-house autocode for IBM 650 |
| DUAL-607 | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Los Alamos Macro-assembler for IBM 701 |
| EASE | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | GM Allison autocode |
| Easicode | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Autocode for the DEUCE |
| EASY | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Honeywell macro-assembler |
| EASY FOX | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Rand autocode for Johhniac |
| EDSAC Autocode | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Autocode for EDSAC 2 |
| EDSAC Initial Orders | ⊕ 1948 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United Kingdom | First ever assembler system |
| EDVAC/ORDVAC coding | ⊕ 1952 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | BRL Assembler library for the VAC computers |
| EK | ⊕ 1964 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ Czech Republic | EPOS symbolic assembler |
| Elliot 401 Autocode | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United Kingdom | Elliot Bros Autocode |
| ENIAC short code | ⊕ 1946 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | Clippinger/von Neumann short code |
| ENIAC stored program | ⊕ 1943 | ↓ ↑ Excluded from Sammet | ⊕ Other US historic | ⊕ United States | Von Neumann |
| ESCAPE | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Curtiss Wright interpretive autocode |
| FACS | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Georgia Lockheed version of FLAIR |
| FAIR | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Kodak Eastman interpretive autocoder |
| FAP | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Lockheed interpreter for Univac 1103A |
| FITZWATER Autocoder | ⊕ 1964 | ↓ ↑ Excluded from Sammet | ⊕ High-level Autocoders | ⊕ United States | Autocoder with Fortran loops and subscripts |
| FLAIR | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Autocode for 650 |
| FLIP | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Floating point interpretive program |
| FLIP/SPUR | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Combination of autocode and assembler for UNIVAC 1103 |
| FLOCO | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | |
| FLOP | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ United States | Lockheed virtual machine for IBM 701 |
| Flow Diagrams | ⊕ 1946 | ↓ ↑ Excluded from Sammet | ⊕ Flowcharts | ⊕ United States | Graph based visual program language |
| FMS | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | FORTRAN Macroassembler System |
| FORTRUNCIBLE | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | FORTRAN/RUNCIBLE |
| FRAP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | PDP-1 assembler |
| GAR | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Macro assembler |
| GEPURS | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | General purpose autocoder |
| GIF | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Internal Translators | ⊕ United States | IT translator |
| GMAP | ⊕ 1968 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ France | |
| GMPL | ⊕ 1982 | ↓ ↑ Excluded from Sammet | ⊕ United States | ||
| HAND SOAP | ⊕ 1967 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | SOAP III with hand optimisation |
| IBAL | ⊕ 1968 | ↓ ↑ Excluded from Sammet | ⊕ Microprogramming and HLAs | ⊕ United States | ILLIAC HL Assembler |
| IBMAP | ⊕ 1966 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Bell Labs macro assembler |
| ILLIAC | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | ILLIAC Assembler |
| IT | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Internal Translators | ⊕ United States | Algebraic interpreter for IBM 705 |
| JCS-13 | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Rand macroassembler for IBM 701 |
| K5 | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Algebraic | ⊕ United States | Algebraic assembler |
| KISS | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ High-level Autocoders | ⊕ United States | Chrysler 650 Autocode |
| Language for computer description | ⊕ 1964 | ↓ ↑ Excluded from Sammet | ⊕ Czech Republic | Hardware based description language | |
| Lovelace and Babbage | ⊕ 1843 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic | ⊕ United Kingdom | |
| LSS | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ United States | Machine-independant binary object language |
| MACRO Assembly | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | IBM Assembler |
| MACRO-10 | ↓ ↑ Excluded from Sammet | ⊕ United States | |||
| MAGIC | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Michigan interactive coding system |
| MAP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Macro Assembly Program |
| MAP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | MOBIDIC Assembler Program |
| MICA | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Share assembler |
| MICA | ⊕ 1978 | ↓ ↑ Excluded from Sammet | ⊕ United Kingdom | ||
| MISCRAP | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Lockheed diagnostic compiler for 1103A |
| MISHAP | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Lockheed assembler package for UNIVAC 1103A |
| MITILAC | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | MIT macroassembler |
| MOSAIC | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Macros | ⊕ United States | Macro system with advanced control structure |
| NAA Assembly | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Interpreted macro-assembler for IBM 701 |
| NABUR | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | NAREC ASSEMBLER for the BURROUGHS D825 |
| Nicholas coding scheme | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Autocode for the Nicholas system |
| NUIT | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | NWU IT |
| OMNICODE | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Autocoder for 650 |
| OMNIFAX | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Compiler for Univac I |
| OPAL | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Philco symbolic assembler |
| ORACLE Order Code | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | Oak Ridge initial orders |
| PASCAL | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ Netherlands | Macro-assembler for Philips computer |
| Peano | ⊕ 1888 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic | ⊕ Italy | Peano |
| Pegasus AUTOCODE | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Autocode for the Pegasus system |
| PL/B | ⊕ 1978 | ↓ ↑ Excluded from Sammet | ⊕ Assemblers | ⊕ United States | Portable assembly |
| Plankalkul | ⊕ 1943 | ↓ ↑ Excluded from Sammet | ⊕ W European algorithmic systems | ⊕ Germany | Algebraic compiler for Z3 |
| POGO | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | G-15 Autocoder |
| Post production | ⊕ 1941 | ↓ ↑ Excluded from Sammet | ⊕ Grammar and Syntax-oriented | ⊕ United States | Emil Post production system |
| Principia Mathematica | ⊕ 1908 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic | ⊕ United Kingdom | R & W symbolic treatment of maths |
| Process III | ⊕ 1964 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | High level macro assembler |
| QADAAD | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | UNIVAC Assembler |
| QUEASY | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | NOTS autocode for IBM 701 |
| QUICK | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | DAC Autocode for 701 |
| RAL | ⊕ 1950 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United Kingdom | Regional Assembly Language |
| RAMAC | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Symbolic Assembly Program for IBM RAMAC |
| RAWOOP | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Macroassembler for UNIVAC 1103 |
| RAWOOP/SNAP | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Ramo Woolridge macroassembler for UNIVAC |
| READ | ⊕ 1953 | ↓ ↑ Excluded from Sammet | ⊕ Other US historic | ⊕ United States | Automatic translation system at GM Allison |
| REG-SYMBOLIC | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Los Alamos symbolic assembler |
| RELATIVE | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Interpretive autocode at GM Allison |
| RELCODE | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assmbler for UNIVAC I and II |
| ROAR | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | RPC-400 Assembler |
| S4 | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | UNIVAC Assembler |
| SAC | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Electrodata assembler for Burroughs |
| SAIL | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Livermore Larc assembler |
| SALT | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | |
| SAP II | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | SHARE Assembly Program version II |
| Schoenfinkel | ⊕ 1924 | ↓ ↑ Excluded from Sammet | ⊕ Algebraic | ⊕ United States | Schoenfinkel's combinatory algebra |
| SCP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | One-to-one compiler for symbolic address |
| SCRIPT | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | GE Hanford autocoder |
| Seeber instructions | ⊕ 1949 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | First soft-addressable memory |
| SERA | ⊕ 1964 | ↓ ↑ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ Netherlands | Zebra VM language |
| SET | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | BEFAP style macro |
| SIR | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | IBM Autocoder for IBM 650 |
| SLEUTH | ⊕ 1962 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Symbolic Assembler for UNIVAC 1107 |
| SMASHT | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | SDC symbolic assembler |
| SNAP | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Ramo Woolridge floating point package for UNIVAC 1103 |
| SNIP | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Complex maths version of RW SNAP |
| SO 2 | ⊕ 1952 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Symbolic assembler for IBM 701 |
| SOAP I | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | First release of SOAP |
| SOAP IIA | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Improved SOAP II |
| SOAP III | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | SOAP extended by Knuth |
| SOHIO | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | SOHIO autocode for 750 |
| SOS | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | SHARE Assembler |
| SPEED CODING | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Redstone Arsenal Autocode |
| SPIT | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Intermediate languages and VMs | ⊕ United States | Intermediate language for IT |
| Spool | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | |
| SPUR | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assembly packages | ⊕ United States | Floating point package |
| STAR | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Burroughs 200/205 assembler |
| STAR I | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Burroughs 220 assembler |
| STEVE | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Early Autocodes | ⊕ United Kingdom | Symbolic language for the DEUCE |
| STRAP | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | STRetch Assembly Program |
| STRAP I | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | assembler for IBM 7030/709 |
| STRAP II | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | STRetch Assembly Program |
| SuperSoap | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Knuth's improved version of SOAP III |
| SUPERTASS | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Autocoder for G-20 |
| SWAP | ⊕ 1970 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | High level macro assembler |
| SYLLIAC Initial orders | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ Australia | IO for the SYlliac |
| SYMBOLIC ASSEMBLER | ⊕ 1963 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | |
| SYMBOLIC ASSEMBLY | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Symbolic assembler for IBM 705 |
| TAC initial orders | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ Japan | Initial order for the TAC computer |
| TAP | ⊕ 1971 | ↓ ↑ Excluded from Sammet | ⊕ United States | Macroassembler for the TREET system | |
| TAP | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | TRANSAC symbolic assembler |
| TAPTAC | ⊕ 1960 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Super-TAP for Philco |
| TASS | ⊕ 1973 | ↓ ↑ Excluded from Sammet | ⊕ Assemblers | ⊕ United Kingdom | Intermediate language produced by the Manchester SISAL compiler |
| TASS | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Tech Assembly System |
| TASS I | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | Autocoder for 650 |
| THAT | ⊕ 1961 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Assembler at IT, replacement for SOAP and TASS |
| TRANS-USE | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Univac 1103 macroassembler |
| Turing autocode | ⊕ 1952 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United Kingdom | Turing |
| Turing's code | ⊕ 1936 | ↓ ↑ Excluded from Sammet | ⊕ Autocode Coeval | ⊕ United States | |
| UDECIN-1 | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Other US historic | ⊕ United States | UDEC III interpreter |
| UDECOM-3 | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | Compiler for the Burroughs UDEC III |
| UGLIAC | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Low-level Autocoders | ⊕ United States | United Gas autocode |
| UNISAP | ⊕ 1957 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Case SAP |
| Universal Assembler Language | ⊕ 1986 | ↓ ↑ Excluded from Sammet | ⊕ United States | ||
| WEIZAC Initial orders | ⊕ 1954 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United States | IO for the WEIZAC |
| Williams | ⊕ 1948 | ↓ ↑ Excluded from Sammet | ⊕ Initial orders | ⊕ United Kingdom | Proto-index register for the Manchester Copmuter |
| Wolontis-Bell Interpreter | ⊕ 1955 | ↓ ↑ Excluded from Sammet | ⊕ Bell Labs Interpreters | ⊕ United States | High level interpreter at Bell labs for 650 |
| X-1 | ⊕ 1956 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | Experimental Assembler For Univac II |
| X-6 | ⊕ 1959 | ↓ ↑ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | |
| XIL | ⊕ 1958 | ↓ ↑ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | UNIVAC symbolic assembler |