| The C programming language BW Kemighan, DM Ritchie Prentice Hall, Englewood Cliffs, New Jersey (I978), 1978 | 10760* | 1978 |
| The UNIX time-sharing system DM Ritchie, K Thompson Classic operating systems, 195-220, 2001 | 2420* | 2001 |
| The UNIX time-sharing system DM Ritchie, K Thompson Communications of the ACM 17 (7), 365-375, 1974 | 2411* | 1974 |
| A retrospective DM Ritchie UNIX: 3E system readings and applications. Volume I: UNIX: 3E time-sharing …, 1986 | 1807* | 1986 |
| The UNIX Time-sharing System A Retrospective DM Ritchie The Bell System Technical, 1977 | 730* | 1977 |
| UNIX Timesharing DM Ritchie, K Thompson CACM 57 (6 part 2), 1931-1946, 1978 | 675* | 1978 |
| A stream input-output system DM Ritchie AT&T Bell Laboratories Technical Journal 63 (8), 1897-1910, 1984 | 499 | 1984 |
| The development of the C language DM Ritchie ACM SIGPLAN Notices 28 (3), 201-208, 1993 | 389 | 1993 |
| C Programming Language D Ritchie, GCC Clang, PC C MSVC, C Watcom | 366* | |
| The evolution of the Unix time-sharing system DM Ritchie AT&T Bell Laboratories Technical Journal 63 (8), 1577-1593, 1984 | 330 | 1984 |
| The evolution of the Unix time-sharing system DM Ritchie EVOLUTION 10, 11, 1979 | 330* | 1979 |
| The complexity of loop programs AR Meyer, DM Ritchie ACM Annual Conference/Annual Meeting: Proceedings of the 1967 22 nd national …, 1967 | 279 | 1967 |
| The Inferno™ operating system SM Dorward, R Pike, DL Presotto, DM Ritchie, HW Trickey, ... Bell Labs Technical Journal 2 (1), 5-18, 1997 | 180* | 1997 |
| Protection of data file contents DM Ritchie US Patent 4,135,240, 1979 | 156 | 1979 |
| Portability of C Programs and the UNIX System SC Johnson, DM Ritchie The Bell System Technical Journal 57 (6 Part 2), 2021-2048, 1978 | 148 | 1978 |
| Unix Programmer’s Manual K Thompson, DM Ritchie Bell Labs, November, 1971 | 134* | 1971 |
| C Reference Manual DM Ritchie Bell Telephone Laboratories, Murray Hill, NJ, 1974 | 120 | 1974 |
| The M4 macro processor BW Kernighan, DM Ritchie Bell Laboratories, 1977 | 117 | 1977 |
| Computational complexity and program structure AR Meyer, DM Ritchie IBM Res. Rep 1967, 1817 | 74* | 1817 |
| The Styx® architecture for distributed systems R Pike, DM Ritchie Bell Labs Technical Journal 4 (2), 146-152, 1999 | 67 | 1999 |
