Compiled from http://www.telnetbbsguide.com.

RANK    BBS_TYPE        COUNT(*)
1       Synchronet      142
2       Worldgroup      67
3       Wildcat         45
4       Maximus         12
5       BBBS            8
6       Unix            8
7       EleBBS          7
8       Renegade        7
9       VADV            7
10      MBSE            6
11      Mystic          6
12      Other           5
13      PCBoard         5
14      WWIV            5
15      GameSrv         4
16      Citadel         3
17      DOC             3
18      Ezycom          3
19      MajorBBS        3
20      Proboard        3
21      RemoteAccess    3
22      TBBS            3
23      Telegard        3
24      BBS100          2
25      BeBS/Citadel    2
26      C64 DMBBS       2
27      Enthral         2
28      Image BBS       2
29      MSBE            2
30      ProBoard        2
31      ABBS            1
32      AMMS            1
33      AdeptX BBS      1
34      All American BBS 128    1
35      Ami-Express     1
36      Amiexpress      1
37      ArcBBS          1
38      BBS 100         1
39      BBSNet          1
40      C-Net Pro       1
41      Centipede       1
42      Cittadella/UX   1
43      Cnet Pro        1
44      Concord         1
45      DiversiDial (Linux Based)       1
46      Djinn (Custom)  1
47      Dragon Chat     1
48      EBBS64 + Custom 1
49      GBBS Pro        1
50      GT-2000         1
51      GTalk           1
52      Hermes          1
53      Hermes II       1
54      Homebrew 2.0    1
55      Iniquity        1
56      JYS             1
57      Java            1
58      Lambda/Trex     1
59      MOO             1
60      MUD             1
61      NetBSD          1
62      Picospan        1
63      Roboboard F/X   1
64      STS/DDial Clone 1
65      Sauron          1
66      Searchlight     1
67      Spitfire        1
68      Synchornet      1
69      TAG             1
70      TEMSYS          1
71      TSX             1
72      TWGS            1
73      Tornado         1
74      TriBBS          1
75      UltraBBS        1
76      VDOC            1
77      YAWC            1
78      vDOC            1
79      vDoc            1

--- Maximus 3.01