| Rank | Board name and description | Posts | Members |
| 1 | IMobile Mobile phones community (in chinese) | 31277230 | 9591781 |
| 2 | DP review Digital photography forums | 28120340 | 363010 |
| 3 | The Straight Dope Cecil Adams' weekly question and answer column message boards | 16179648 | 148398 |
| 4 | Photography on the Net Canon digital photography forums | 15667295 | 377579 |
| 5 | Slashdot Technology news commenting website | 13988544 | 880049 |
| 6 | Onliner.by Forum about mobile technologies in Belarus (in Russian) | 13466376 | 425081 |
| 7 | Howard Forums Mobile phones discussion boards | 13434328 | 1113663 |
| 8 | DSLR-Forum German DSLR Forum | 10893234 | 384188 |
| 9 | Elektroda.pl Polish electronics forum | 10696938 | 1593318 |
| 10 | Above Top Secret Government secrets and conspiracy discussion forums | 9402961 | 201391 |
| 11 | Urban 75 General discussion message board | 9231910 | 48804 |
| 12 | Randi.org Science, society and skepticism forums | 9207920 | 31286 |
| 13 | GSM Forum GSM and mobile phone message boards | 8501468 | 1941040 |
| 14 | TurkeyForum Satellite technology discussions (in turkish) | 7763518 | 483429 |
| 15 | Free Ratio Freethought and rationalism forum | 6975122 | 19381 |
| 16 | Giga.de Computer and internet message board (in german) | 6561468 | 1121643 |
| 17 | Et8 Technology message boards (in chinese) | 6090361 | 18826 |
| 18 | Chile Hardware Computer hardware forums (in Spanish) | 5879344 | 463771 |
| 19 | VIP 600 Technology message boards (in Arabic) | 5200510 | 527412 |
| 20 | Telefon Treff German mobile phones community | 5060312 | 208741 |
| 21 | Photo4u.it Italian photo community | 4705832 | 64170 |
| 22 | L'île des mathématiques Mathematics Forum | 4563431 | 45036 |
| 23 | Physics Forums Science, physics and maths community | 4055663 | 390315 |
| 24 | Eastern US Weather East Coast Weather discussion board | 3690077 | 10332 |
| 25 | Futura Science French science discussion forum | 3631256 | 518641 |
| 26 | Techzone Forum about computers and technology | 3589460 | 110811 |
| 27 | Belgium Digital Digital photography message board (in dutch) | 3572242 | 48062 |
| 28 | Club Snap Photography message boards | 3421581 | 54035 |
| 29 | AV Magazine Italian Audio/Video message board | 3355318 | 106950 |
| 30 | Min Hembio Swedish forum for home cinema and electronics. | 3234839 | 214128 |
| 31 | Meteo Network Italian meteorology network | 3132814 | 6650 |
| 32 | Psych Central Psychotherapy and mental health forums | 3049103 | 254510 |
| 33 | Esato Sony Ericsson mobile phones community | 3034856 | 219525 |
| 34 | PurePC.pl Electronics message board | 2840081 | 54692 |
| 35 | SciForums Science discussion forums | 2828685 | 34184 |
| 36 | Meteo Red Spanish Forum about meteorology | 2768549 | 15807 |
| 37 | IhAv.NET Offtopic community | 2665876 | 744469 |
| 38 | Head-Fi High-end headphones discussion forum | 2645779 | 49704 |
| 39 | Ask Me Help Desk Ask the experts community | 2595192 | 881607 |
| 40 | IP mart forum Symbian and other mobile system forums | 2487090 | 1608613 |
| 41 | My Phone Mobile phones discussion board (in greek) | 2456899 | 138728 |
| 42 | Forum Ponsel Indonesian technology forums | 2344920 | 102695 |
| 43 | WCM Online Austrian computer and technology forum | 2262151 | 40354 |
| 44 | Forum Owisko Polish general discussion forum | 2101292 | 91112 |
| 45 | Laneros Technology forums (in Spanish) | 2042916 | 182960 |
| 46 | The Photo Forum Photographers community | 1988834 | 88398 |
| 47 | Photo Camel Photo community | 1853653 | 64011 |
| 48 | MathLinks Mathematical community | 1793205 | 81428 |
| 49 | BrightHand PDA and Smartphone Forums | 1773506 | 133642 |
| 50 | Blackberry Forums Blackberry owners community | 1757955 | 635381 |
| 51 | Bad Astronomy and Universe Astronomy and Universe message board | 1673893 | 77390 |
| 52 | Egel Forum General technology forum (in spanish) | 1600126 | 34414 |
| 53 | Planet.ee Technical discussion forum (in estonian) | 1494449 | 8419 |
| 54 | MP3Car Car computers forum | 1375278 | 138534 |
| 55 | Digital Worldz Digital devices forum | 1305605 | 38202 |
| 56 | Pocket Navigation Navigation systems forum (in german) | 1226873 | 92869 |
| 57 | Polish Elite Board Technology discussion forum (in Polish) | 1208864 | 1268641 |
| 58 | Geyiq Turkish entertainment forum | 1159953 | 33562 |
| 59 | EH Mac Mac, iPod and iPhone community | 1138036 | 39366 |
| 60 | Mac City Net Mac and iPod Italian forum | 1109082 | 75483 |
| 61 | Foro Powers Technology forums (in spanish) | 1080012 | 48479 |
| 62 | MacTalk Apple and Mac forums | 1056932 | 6651 |
| 63 | Handykult Mobile phones message boards (in german) | 898675 | 133489 |
| 64 | Ipod Lounge Ipod discussion and resource board | 898548 | 93945 |
| 65 | Sudhian Forums Electronics message board | 849934 | 99257 |
| 66 | 1src Palm and PDA message board | 814614 | 110080 |
| 67 | PentaxForums Photography forums | 809125 | 18256 |
| 68 | Forum Plasa Indonesian general discussion forum | 809072 | 74273 |
| 69 | Teknoloji Televizyonu Technology forum in Turkish | 772245 | 191567 |
| 70 | Cell Phone Forums Message board about cell phones | 761505 | 255419 |
| 71 | Socionics Forum about socionics (in russian) | 718941 | 3379 |
| 72 | Pinstack Blackberry Forums | 677809 | 367137 |
| 73 | Ön Sayfa Community Satellite technology discussions (in turkish) | 637864 | 51680 |
| 74 | Depression Forums Mental health forums | 615797 | 41078 |
| 75 | CNET Technology and software message boards | 589420 | 19866 |
| 76 | Symbianize Mobile phones and technology forums | 559098 | 31939 |
| 77 | Maxicep Cellphones and smartphones forums (in Turkish) | 534045 | 216344 |
| 78 | Funender Electronics discussion board | 524563 | 20321 |
| 79 | WebTurkiye Forum Turkish computing forum | 495507 | 55123 |
| 80 | BizimUydu BizimUydu satellite forum | 263724 | 4697 |
| 81 | Austech Australian technology forums | 16475 | 2511 |
| 82 | Miccoms Community German mobile phones community | 10394 | 138 |