| ABLE | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Other DPLs | ⊕ United States | Auditors business language |
| ALGOSIM | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Algol 68 based simulation |
| AMPL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Language-oriented | ⊕ United States | Manusript preparation language |
| APLBOL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL written in SNOBOL |
| APLUM | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL2 for UM |
| ASPLE | ⊕ 1975 | ⊕ United States | Paper language for demonstrating W-Grammars | ||
| B4Tran | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Non Standard FIV | ⊕ United States | Structured Fortran |
| BASIC-PLUS | ⊕ 1975 | ⊕ Street basics | ⊕ United States | ||
| BLISS-11 | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Bliss for PDP-11 | |
| CBCL | ⊕ 1975 | ⊕ United States | |||
| CDC-Pascal | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Pascal for te CDC 6000 |
| CELLSIM II | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Systems | ⊕ United States | Cell population simulation language |
| CENTRAN | ⊕ 1975 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Microprogramming and HLAs | ⊕ United States | High level macro assembler |
| Coroutine Pascal | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| CPL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | DARPA Common Prototyping Language | |
| CS-4 | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Wirth Algols | ⊕ United States | Intermetrics System Lanugage |
| csh | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United States | Command language and environmnet for UNIX |
| CUPID | ⊕ 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other visual query languages | ⊕ United States | Graphic interactive query language |
| DARE P | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Continuous simulation languages |
| DARE-II | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Continuous simulation languages |
| DARMS | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Music programming language |
| DEFINE | ⊕ 1975 | ⊕ United States | |||
| DELISA | ⊕ 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| DELtran | ⊕ 1975 | ↓ ↑ ⊕ On-Line | ⊕ FORTRAN IV standard | ⊕ United States | Fortran interpreted to DEL |
| DIET | ⊕ 1975 | ⊕ United States | |||
| DL* | ⊕ 1975 | ⊕ United States | |||
| DMAP | ⊕ 1975 | ⊕ COBOL-68 | ⊕ United States | Parallel Cobol | |
| DOD specification | ⊕ 1975 | ⊕ Wirth Algols | ⊕ United States | ||
| DYNAMO HI/370 | ⊕ 1975 | ⊕ United States | |||
| ECSS | ⊕ 1975 | ⊕ United States | Simluations language | ||
| ECSS II | ⊕ 1975 | ⊕ United States | |||
| ELP | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| EPS | ⊕ 1975 | ⊕ United States | |||
| EQN | ⊕ 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| FILES | ⊕ 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | Retrieval language for engineering |
| FLEX | ⊕ 1975 | ⊕ United States | |||
| FLING | ⊕ 1975 | ⊕ United States | |||
| FOCAL-12 | ⊕ 1975 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | FOCAL for the PDP-12 |
| FORAL | ⊕ 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| GPSS/H | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Process interaction | ⊕ United States | Extended GPSS |
| GRAP | ⊕ 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| Grapheasy | ⊕ 1975 | ⊕ United States | |||
| Greif formal specification language | ⊕ 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| GRIP | ⊕ 1975 | ⊕ United States | |||
| GRIP-75 | ⊕ 1975 | ↓ ↑ ⊕ On-Line | ⊕ United States | ||
| GT STRUDL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Civil | ⊕ United States | Georgia Tech STRUDL |
| HOS-STPL | ⊕ 1975 | ⊕ United States | |||
| IDL | ⊕ 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Visualisation | ⊕ United States | Interactive Data analysis Language |
| ISL-II | ⊕ 1975 | ⊕ Event scheduling | ⊕ United States | Interactive simulation language | |
| Lex | ⊕ 1975 | ⊕ United States | Specification language | ||
| Lex | ⊕ 1975 | ⊕ Grammar and Syntax-oriented | ⊕ United States | Scanner generator | |
| MAGEN II | ⊕ 1975 | ⊕ Arithmetic | ⊕ United States | Matrix Generator | |
| MAPLE | ⊕ 1975 | ⊕ Robotics | ⊕ United States | IBM Robotics Assembly | |
| MIL75 | ⊕ 1975 | ⊕ United States | Module Interconnection Language | ||
| MINI-EXPLOR | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Animation | ⊕ United States | Animatino language |
| Minnesota Pascal 6000 | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| MIP | ⊕ 1975 | ⊕ United States | |||
| MIT-STRUDL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Civil | ⊕ United States | Evolution of STRUDL-II |
| ML-ll | ⊕ 1975 | ⊕ United States | |||
| MODEL | ⊕ 1975 | ⊕ United States | |||
| MORTRAN 3 | ⊕ 1975 | ⊕ Non Standard FIV | ⊕ United States | ||
| Mouse | ⊕ 1975 | ⊕ Stack | ⊕ United States | ||
| MUSIC 6 | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Musical composition language |
| Nqthm | ⊕ 1975 | ⊕ United States | |||
| PADL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | Rochester parts assembler language |
| PFORT | ⊕ 1975 | ⊕ United States | |||
| PICTOL | ⊕ 1975 | ⊕ United States | |||
| PIN | ⊕ 1975 | ⊕ United States | |||
| PL/CV | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Predicate | ⊕ United States | Verifying logical dialect of PL/CS |
| PLASMA | ⊕ 1975 | ⊕ United States | |||
| POLAC | ⊕ 1975 | ⊕ United States | |||
| Principle of sufficient reason | ⊕ 1975 | ⊕ United States | Structure reforms for distributed processing | ||
| PROSE | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Hybrid | ⊕ United States | Hybrid simulation language |
| QBE | ⊕ 1975 | ⊕ RDBMs | ⊕ United States | Query By Example | |
| RABBIT | ⊕ 1975 | ⊕ United States | Compiler for Scheme | ||
| RATFOR | ⊕ 1975 | ⊕ United States | |||
| REC | ⊕ 1975 | ⊕ United States | |||
| REL English | ⊕ 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| SAINT II | ⊕ 1975 | ⊕ United States | |||
| Scheme | ⊕ 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| SIL | ⊕ 1975 | ⊕ United States | SNOBOL Implementation Language | ||
| SL5 | ⊕ 1975 | ⊕ United States | |||
| SOL-370 | ⊕ 1975 | ⊕ United States | Port of SOL to IBM System 370 | ||
| SQL | ⊕ 1975 | ⊕ RDBMs | ⊕ United States | ||
| SQUARE | ⊕ 1975 | ⊕ RDBMs | ⊕ United States | ||
| Strawman | ⊕ 1975 | ⊕ Wirth Algols | ⊕ United States | ||
| TDFL | ⊕ 1975 | ⊕ United States | Textual Dataflow Language | ||
| TOMAL | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Realtime language | |
| Ultimate | ⊕ 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Ad hoc query languages | ⊕ United States | Language for interactive Pick querying |
| UTLISP | ⊕ 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| VECTRAN | ⊕ 1975 | ⊕ United States | |||
| VS BASIC | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Pooled resources BASIC for IBM 370 | |
| Woodenman | ⊕ 1975 | ⊕ Wirth Algols | ⊕ United States | ||
| XTAB9 | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Statistical | ⊕ United States | Statistical language |
| YACC | ⊕ 1975 | ⊕ Grammar and Syntax-oriented | ⊕ United States | Compiler Compiler |