| 801 | LOOM (ontology) | |
| 802 | Pascal Script | |
| 803 | XBLite | |
| 804 | Actor (programming language) | |
| 805 | Pnuts | |
| 806 | ARITH-MATIC | |
| 807 | Edinburgh IMP | |
| 808 | Ubercode | |
| 809 | Claire (programming language) | |
| 810 | Mama (software) | |
| 811 | Turbo51 | |
| 812 | JoCaml | |
| 813 | Profile Scripting Language | |
| 814 | Compiler Description Language | |
| 815 | Progol | |
| 816 | Vilnius BASIC | |
| 817 | Advice taker | |
| 818 | Alma-0 | |
| 819 | KRL (programming language) | |
| 820 | AssemblyScript | |
| 821 | SR (programming language) | |
| 822 | Zonnon | |
| 823 | OptimJ | |
| 824 | Common Lisp Music | |
| 825 | MultiLisp | |
| 826 | Absys | |
| 827 | MIIS (programming language) | |
| 828 | Dependent ML | |
| 829 | Pict (programming language) | |
| 830 | COFFEE (Cinema 4D) | |
| 831 | Orwell (programming language) | |
| 832 | Frenetic (programming language) | |
| 833 | TNSDL | |
| 834 | Gauche (Scheme implementation) | |
| 835 | Bosque (programming language) | |
| 836 | PV-Wave | |
| 837 | TREE-META | |
| 838 | LIS (programming language) | |
| 839 | Personal Printer Data Stream | |
| 840 | NESL | |
| 841 | Ruby (hardware description language) | |
| 842 | SenseTalk | |
| 843 | CHIP (programming language) | |
| 844 | DEC Text Processing Utility | |
| 845 | MLisp | |
| 846 | Averest | |
| 847 | Lynx (programming language) | |
| 848 | PL360 | |
| 849 | Cryptol | |
| 850 | TTM (programming language) | |
| 851 | Concurrent Collections | |
| 852 | Escher (programming language) | |
| 853 | Secure Operations Language | |
| 854 | AmbientTalk | |
| 855 | EXEC 2 | |
| 856 | Atari Microsoft BASIC | |
| 857 | Hierarchical Music Specification Language | |
| 858 | JEAN | |
| 859 | IBM RPG III | |
| 860 | OmniMark | |
| 861 | COWSEL | |
| 862 | Obliq | |
| 863 | Ox (programming language) | |
| 864 | S3 (programming language) | |
| 865 | OpenMx | |
| 866 | S-algol | |
| 867 | Cuneiform (programming language) | |
| 868 | Polymorphic Programming Language | |
| 869 | BASIC 8 | |
| 870 | OpenLisp | |
| 871 | ABSET | |
| 872 | VAX MACRO | |
| 873 | Basic4GL | |
| 874 | Polymorphic recursion | |
| 875 | PForth | |
| 876 | BPEL script | |
| 877 | LSE (programming language) | |
| 878 | XOTcl | |
| 879 | PL-11 | |
| 880 | Plus (programming language) | |
| 881 | Apple Dylan | |
| 882 | FpgaC | |
| 883 | WordBASIC | |
| 884 | WxBasic | |
| 885 | Filetab | |
| 886 | Gleam (programming language) | |
| 887 | Portable Standard Lisp | |
| 888 | PAL (programming language) | |
| 889 | Quantum Computation Language | |
| 890 | ELAN (programming language) | |
| 891 | Hindawi Programming System | |
| 892 | Charm (programming language) | |
| 893 | DATATRIEVE | |
| 894 | Pic Micro Pascal | |
| 895 | HyperFun | |
| 896 | Real-time Programming Language | |
| 897 | Concurrent Euclid | |
| 898 | Abbreviated Language for Authorization | |
| 899 | Spice Lisp | |
| 900 | Active Oberon | |
