| 10Micron | 483 | 11022 |
| 123apps.com | 1 | 1 |
| 2047STUDIO | 13 | 55 |
| 2Astro | 6 | 39 |
| 4tronics | 1 | 5 |
| 656 Imaging | 7 | 53 |
| 7artisans | 1 | 1 |
| A.J. Qviller | 1 | 1 |
| ABM | 1 | 1 |
| Abrosoft | 1 | 8 |
| ABSoft, NeatLab | 9 | 44 |
| Acclaim Software Ltd | 0 | 0 |
| ACD Systems International Inc. | 6 | 586 |
| ACDSee | 10 | 151 |
| Achim Schaller | 47 | 116 |
| ACP Scheduler | 0 | 0 |
| Acroname | 1 | 1 |
| Acuter | 1 | 1 |
| ADM Accessories | 11 | 51 |
| AdmCNC | 2 | 24 |
| Adobe | 8053 | 147663 |
| Affinity | 11 | 27 |
| AG Optical | 107 | 1231 |
| Agema Optics Inc. | 1 | 3 |
| Agena Astro | 30 | 439 |
| AGPTEK | 3 | 14 |
| agriggio | 4 | 36 |
| Airy Disk | 3 | 25 |
| Airylab | 10 | 1510 |
| AKASO | 1 | 1 |
| Alcor System | 59 | 661 |
| Aleksey Chernov | 4 | 16 |
| Alex Koksin | 1 | 1 |
| Allied Vision Technologies | 1 | 2 |
| AllSkEye | 3 | 5 |
| Alluna Optics | 9 | 28 |
| Alstar | 1 | 11 |
| ALT | 9 | 175 |
| Altair | 683 | 7423 |
| Altair / Skytech | 31 | 130 |
| Amazon | 0 | 0 |
| AmazonBasics | 1 | 4 |
| AMS | 0 | 0 |
| AMS System SEGUGIO TRACKER | 1 | 1 |
| Anat Ruangrassamee | 1 | 2 |
| Andor | 4 | 149 |
| Andover Corporation | 1 | 4 |
| Andreas Rörig | 22 | 483 |
| Angeleyes | 25 | 179 |
| Angelos Tsiaras | 0 | 0 |
| Anker | 3 | 9 |
| Anssen Technologies | 1 | 0 |
| Antares | 47 | 372 |
| Antila | 3 | 4 |
| Antlia | 1837 | 16384 |
| Antti Kuntsi | 9 | 199 |
| AnyDesk Software GmbH | 1 | 1 |
| Aodelan | 3 | 5 |
| AOM | 4 | 17 |
| Apertura | 165 | 1131 |
| Apinar | 1 | 1 |
| APM | 208 | 1859 |
| APM-Riccardi | 110 | 1251 |
| Apogee | 110 | 1177 |
| Apple | 256 | 1136 |
| Aptina / ON Semi | 0 | 0 |
| Aquila | 3 | 23 |
| Arecont Vision | 3 | 5 |
| Aries Instruments | 4 | 46 |
| Aries Productions | 1479 | 23465 |
| ARP83 | 1 | 4 |
| Arsat | 1 | 1 |
| Arsenal | 11 | 70 |
| Artcise | 2 | 2 |
| Artemis CCD | 10 | 80 |
| Artesky | 176 | 2012 |
| ArteskyOptics | 2 | 15 |
| ASA | 233 | 2280 |
| Asahi Opt. Co. | 1 | 7 |
| ASG Astronomy | 14 | 126 |
| Askar | 1460 | 11011 |
| Askar Colour magic C1 Duo-Band Ha+Oiii 2inch filter | 1 | 2 |
| AstcamPan | 7 | 27 |
| Astelco | 0 | 0 |
| Asterion | 2 | 5 |
| Astrel Instruments | 13 | 71 |
| Astrhori | 0 | 0 |
| Astro Berlin | 1 | 2 |
| Astro Devices | 2 | 12 |
| Astro Electronic | 1 | 167 |
| Astro Essentials | 19 | 80 |
| Astro Hutech | 52 | 2076 |
| Astro Optik / Philipp Keller | 13 | 77 |
| Astro Optik Manufaktur | 3 | 103 |
| Astro Professional | 14 | 114 |
| Astro Systeme Austria | 0 | 0 |
| Astro Systems | 2 | 37 |
| Astro Systems Holland | 3 | 39 |
| Astro-Gadget | 15 | 105 |
| Astro-Physics | 847 | 16446 |
| Astro-Tech | 913 | 12485 |
| AstroArts | 5 | 78 |
| Astroasis | 10 | 79 |
| Astroberry Project | 90 | 692 |
| Astrodevice | 8 | 56 |
| Astrodon | 900 | 14909 |
| Astrodymium | 21 | 99 |
| AstroFaktoria | 1 | 4 |
| Astrograph | 1 | 3 |
| Astrojolo | 18 | 94 |
| AstroKraken | 1 | 1 |
| AstroLumina | 109 | 2668 |
| Astromania | 156 | 1384 |
| Astromann | 1 | 13 |
| Astromechanics | 26 | 101 |
| Astromi.ch | 12 | 118 |
| Astronetics | 1 | 1 |
| Astronomik | 1705 | 18544 |
| AstroPartPicker | 1 | 12 |
| AstroProService | 2 | 2 |
| AstroSharp Ltd | 1407 | 19358 |
| Astrosib | 12 | 132 |
| Astrosweden | 2 | 57 |
| AstroTrac | 35 | 162 |
| Astroworx Australia | 2 | 27 |
| Astrozap | 60 | 780 |
| Asus | 2 | 30 |
| Asys | 1 | 6 |
| Atik | 1113 | 18438 |
| Atolla | 0 | 0 |
| Auriga Imaging | 33 | 303 |
| Avalon Instruments | 98 | 2342 |
| Avery Lee | 24 | 68 |
| Aveygo | 3 | 51 |
| AWOW | 1 | 17 |
| Axis Communications | 1 | 29 |
| Axis Instruments | 3 | 46 |
| Ayex | 2 | 2 |
| Azulle | 1 | 4 |
| azur3dprint | 1 | 1 |
| B+W | 2 | 3 |
| Baader | 2219 | 28593 |
| Backyard Universe | 11 | 55 |
| BaoLand | 2 | 9 |
| barr associates | 1 | 59 |
| Barride Optics | 1 | 34 |
| Barry Etter | 1 | 12 |
| Barska | 1 | 1 |
| Bartłomiej Okonek | 4 | 33 |
| Basler | 38 | 2081 |
| BASS Projet | 1 | 3 |
| Bausch & Lomb | 2 | 4 |
| Beamtech | 3 | 22 |
| Beelink | 45 | 570 |
| Bellavia | 0 | 0 |
| Bellincioni | 2 | 2 |
| Beloptik | 5 | 161 |
| BenQ | 1 | 1 |
| Benro | 45 | 224 |
| Bergen Co. | 4 | 14 |
| Berlebach | 3 | 27 |
| Beroflex | 8 | 53 |
| Bewinner | 1 | 1 |
| BF-Astro (Bob Franke) | 2 | 44 |
| Bigking | 1 | 1 |
| Bill Blanshan | 163 | 1393 |
| Bintel | 8 | 58 |
| Black Hole | 1 | 10 |
| BlackBerry | 1 | 1 |
| Blackmagic Design | 14 | 22 |
| Blender | 0 | 0 |
| Bliss Studio | 2 | 54 |
| Blue Fireball | 12 | 90 |
| Bluetti | 9 | 56 |
| Blumentals Solutions | 1 | 72 |
| BMAX | 1 | 13 |
| Bonney Lakes Astro Works | 0 | 0 |
| Boren-Simon | 17 | 521 |
| Borg | 122 | 1221 |
| Bosma | 2 | 10 |
| Bower | 3 | 2 |
| boxdoerfer elektronic | 0 | 0 |
| BQ | 1 | 4 |
| Brent Boshart | 5 | 9 |
| Bresser | 161 | 1102 |
| Bruce Waddington | 1 | 1 |
| BS Astro (Brightstar) | 2 | 9 |
| BST StarGuider | 0 | 0 |
| Buckeye Stargazer | 2 | 3 |
| Bushnell | 2 | 2 |
| C2PU | 2 | 50 |
| Calver | 0 | 0 |
| CamRanger | 0 | 0 |
| Canon | 9530 | 108700 |
| Canonical | 1 | 9 |
| Carina Software | 9 | 46 |
| Carl Zeiss Jena | 14 | 26 |
| Carson | 1 | 14 |
| Carsten Jacobs | 2 | 5 |
| Carton | 0 | 0 |
| Caseiro | 0 | 0 |
| Casio | 6 | 36 |
| Castell | 6 | 21 |
| Catseye Collimation | 5 | 94 |
| Cave Optical Co. | 1 | 1 |
| CCD Labs | 4 | 85 |
| CCDWare | 140 | 2860 |
| Cec M. | 1 | 21 |
| Cédric Champeau | 1 | 1 |
| Celestron | 4240 | 64404 |
| CentralDS | 76 | 827 |
| Ceravolo | 8 | 91 |
| CFF Telescopes | 39 | 617 |
| Charles Lemaitre | 2 | 7 |
| Chien Peng | 0 | 0 |
| Chinese Generic | 1 | 0 |
| Chinon | 2 | 8 |
| Chris Garry | 765 | 4099 |
| Chris Marriott | 1 | 22 |
| Chris Venter | 7 | 50 |
| Christian Buil | 66 | 1201 |
| Chroma | 761 | 9809 |
| Chronosmount | 1 | 64 |
| Claudio Freire | 1 | 4 |
| Clement Focuser | 2 | 61 |
| CloudMakers, s.r.o. | 36 | 357 |
| Cokin | 5 | 11 |
| Coma di Adriano Lolli | 10 | 31 |
| COMAN | 1 | 1 |
| Compulab | 2 | 21 |
| Coowoo | 6 | 94 |
| Cor Berrevoets et al. | 1443 | 17624 |
| Corel | 93 | 1657 |
| Coronado | 171 | 2366 |
| CosmicPhotons | 4 | 7 |
| Costruzioni Ottiche Zen | 4 | 18 |
| Cranfield / Payne | 79 | 1207 |
| Creative | 1 | 1 |
| CTechi | 3 | 20 |
| Cullmann | 7 | 70 |
| Custom Scientific | 11 | 29 |
| CyberLink | 0 | 0 |
| Cyclops Optics | 10 | 24 |
| Cyril Richard | 0 | 0 |
| Dahszhi | 1 | 1 |
| Dahua | 0 | 0 |
| Dai1 | 1 | 14 |
| Daniel Parrot | 4 | 24 |
| Dany Cardoen | 1 | 1 |
| Dark Dragons Astronomy | 0 | 0 |
| Dark Matters | 2 | 4 |
| Dark Sky Geek | 1 | 3 |
| DarkFrame Optics | 9 | 140 |
| DataChef | 1 | 1 |
| Datyson | 102 | 945 |
| David Biggs | 0 | 0 |
| David Scott | 1 | 56 |
| DayStar | 320 | 4244 |
| DayStar Energy Rejection Filter for Refractors - 140mm | 1 | 5 |
| DC-3 Dreams Advanced Observatory Software | 45 | 1684 |
| Deep Sky Instruments (DSI) | 15 | 97 |
| Deep Sky Workflows | 31 | 251 |
| Deepsky Corp | 11 | 36 |
| DeepSkyDad | 103 | 1342 |
| DeepSkyDetail | 53 | 231 |
| Dell | 1 | 54 |
| Dennis Mellican | 1 | 26 |
| Desert Sky Astro | 1 | 1 |
| Dew-Not | 36 | 342 |
| DewBuster Controls | 7 | 107 |
| DGM | 2 | 2 |
| dHD Digital | 1 | 1 |
| Diffraction Limited | 675 | 11704 |
| Digiarty Software, Inc | 0 | 0 |
| Digicam Control | 0 | 0 |
| Digital Image Solutions | 9 | 206 |
| DIPY.ORG | 0 | 0 |
| Distinct Solutions Ltd | 1040 | 14163 |
| DJI | 3 | 2 |
| DocTelescope | 2 | 63 |
| dotPDN LLC | 10 | 246 |
| Dream Aerospace Systems | 26 | 156 |
| DROK | 0 | 0 |
| Duka Istvan | 14 | 75 |
| DWARFLAB | 47 | 184 |
| DxO Image Science | 48 | 738 |
| EADS-Astrium | 1 | 2 |
| Ecoflow | 2 | 10 |
| EDGE Instruments | 3 | 47 |
| Edmund Optics | 1 | 2 |
| Edward R. Byers | 1 | 121 |
| Eigenbau / TS | 0 | 0 |
| ELP | 1 | 2 |
| EM | 1 | 2 |
| Emil Kraaikamp | 2146 | 27570 |
| Enginstar | 1 | 7 |
| ENS | 3 | 57 |
| Enterprise Astronomy | 19 | 355 |
| EOS FOR ASTRO | 2 | 3 |
| EQAlign Developers | 4 | 23 |
| EQDrive | 0 | 0 |
| Equatorial Platforms | 5 | 18 |
| ESO | 1 | 3 |
| euro EMC | 9 | 67 |
| Everwin | 1 | 0 |
| Exelis Visual Information Solutions | 2 | 77 |
| ExoWorlds Spies | 0 | 0 |
| Expanse | 0 | 0 |
| Explore Scientific | 801 | 8704 |
| Fabien Chéreau et al. | 270 | 3217 |
| Fairchild Imaging | 0 | 0 |
| Fancier | 1 | 1 |
| Farpoint | 10 | 136 |
| FastStone Corporation | 8 | 37 |
| Feisol | 3 | 2 |
| Ferrante Enriques | 1 | 32 |
| FFMPEG Developer Community | 8 | 9 |
| FIBONAX | 0 | 0 |
| Field Tested Systems | 10 | 18 |
| Filip Szczerek | 275 | 5638 |
| First Light Optics | 23 | 119 |
| Fishcamp Engineering | 2 | 37 |
| FixFoto Joachim Koopmann | 0 | 0 |
| FLI | 671 | 8610 |
| Florin Dumitrescu | 1 | 3 |
| Flying Meat | 2 | 15 |
| Fomenko Andrey | 2 | 4 |
| Fornax | 50 | 482 |
| Foscam | 0 | 0 |
| Fotodiox | 2 | 5 |
| FótonAstro | 8 | 87 |
| Founder Optics | 11 | 71 |
| Fournyaa | 1 | 1 |
| Frank Freestar8n | 10 | 40 |
| Franzis Verlag | 2 | 114 |
| Fujifilm | 277 | 1339 |
| Fujinon | 37 | 75 |
| G'MIC | 4 | 11 |
| Gabe Shaughnessy | 1 | 25 |
| Galaxy | 2 | 24 |
| Galileoscope, LLC | 1 | 1 |
| Geekoto | 3 | 9 |
| Gemini | 32 | 676 |
| Geoptik | 12 | 206 |
| Georg Dittié | 7 | 44 |
| George Morimosato | 1 | 15 |
| Gerd Neumann | 43 | 488 |
| Gerhard Balda, Alluna Optics | 2 | 4 |
| Gilbert Grillot / Sylvain Weiller | 3 | 4 |
| Giorgio Puglia / Dott. Fredi De Maria | 1 | 2 |
| Giovanni Benintende | 15 | 129 |
| Gitzo | 9 | 18 |
| GL-iNet | 4 | 60 |
| GlavSoft LLC | 2 | 8 |
| GNU | 1143 | 13616 |
| Goal Zero | 1 | 1 |
| goko | 0 | 0 |
| Google | 65 | 542 |
| GoPro | 14 | 16 |
| Gordon Telepun | 0 | 0 |
| Gosky | 2 | 8 |
| GOTO Inc. | 1 | 53 |
| Gpixel | 0 | 0 |
| Greatstar | 6 | 67 |
| Green Swamp Software | 67 | 693 |
| Greg Alt | 2 | 6 |
| Greika | 3 | 12 |
| GREYC Laboratory | 3 | 49 |
| Grischa Hahn | 296 | 3188 |
| Grubb Parsons | 2 | 2 |
| GSO | 764 | 8508 |
| GSO 12" f/8 Ritchey-Chretien Still Tube | 0 | 0 |
| Guan Sheng Optical (GSO) | 0 | 0 |
| Gunther Wegner | 3 | 7 |
| Gutekunst | 5 | 23 |
| Hähnel | 1 | 44 |
| Haida | 18 | 126 |
| Hakos | 0 | 0 |
| Hama | 8 | 11 |
| Han K. | 172 | 1479 |
| Hanpusen | 0 | 0 |
| Hardin | 1 | 4 |
| Hartmut V Bornemann | 27 | 429 |
| Hasselblad | 4 | 2 |
| hdrsoft | 5 | 11 |
| Herbert Raab | 5 | 38 |
| Hercules | 15 | 46 |
| HIRSCH | 1 | 11 |
| HitecAstro | 7 | 57 |
| Hobym | 21 | 181 |
| Honor | 1 | 1 |
| Horseman | 0 | 0 |
| Hotech | 108 | 1249 |
| Hoya | 48 | 203 |
| HP | 3 | 19 |
| HTC | 6 | 7 |
| Huawei | 17 | 61 |
| Hubble Optics | 3 | 12 |
| Huion | 3 | 123 |
| HUNSN | 1 | 24 |
| HYO | 1 | 7 |
| i-Tec | 2 | 15 |
| Ian King | 7 | 23 |
| icas | 0 | 0 |
| ICE Optical Glass Filters | 9 | 26 |
| IDAS | 881 | 7513 |
| iDS | 4 | 443 |
| iFootage | 1 | 5 |
| Ikarus Technologies | 102 | 985 |
| Ilanga, Inc | 2 | 31 |
| Ilia Sibiryakov | 2 | 2 |
| ImageMagick Studio LLC | 9 | 13 |
| Imagenomic | 9 | 312 |
| iMeascon | 5 | 12 |
| INDI Library | 184 | 1971 |
| INDIGO Astronomy Initiative | 7 | 45 |
| iNiPoGi | 0 | 0 |
| Innovations Foresight | 22 | 261 |
| iNova | 147 | 2293 |
| Instein Astro | 1 | 17 |
| Intane Optics | 1 | 13 |
| Intel | 45 | 613 |
| Intenso | 1 | 18 |
| Interactive Astronomy | 3 | 114 |
| Intercon Spacetec | 3 | 35 |
| Interestar | 1 | 18 |
| InterestarGenius | 0 | 0 |
| Intes | 27 | 787 |
| Intes Micro | 34 | 453 |
| iOptron | 3355 | 48805 |
| Irfan Skiljan | 10 | 305 |
| Iridient Digital | 1 | 2 |
| Irix | 23 | 36 |
| iStar Optical | 9 | 63 |
| Ivan Ionov | 19 | 192 |
| Ivan Kuckir | 4 | 20 |
| Ivo Jager | 0 | 0 |
| Jackery | 17 | 446 |
| Jagged Planet | 2 | 4 |
| James Ritson | 2 | 3 |
| Jarmo Ruuth | 7 | 131 |
| JASC | 0 | 0 |
| Jean Vallières / NGC7000 | 2 | 22 |
| Jean-Etienne Lamiaud | 9 | 233 |
| Jens Dierks | 238 | 5314 |
| Jintu | 3 | 3 |
| JJC | 11 | 44 |
| JMI | 6 | 144 |
| JMU / TTL / Astro-Cam | 3 | 41 |
| John Murphy | 20 | 97 |
| JONGSUN | 1 | 1 |
| Joydeep Biswas | 1 | 4 |
| JSol'Ex | 0 | 0 |
| JTD | 2 | 30 |
| JTW Astronomy | 14 | 114 |
| Jürgen Terpe | 2 | 9 |
| Juwei | 0 | 0 |
| JVC | 1 | 1 |
| K&F Concept | 19 | 40 |
| K&F Concept 77mm ND | 0 | 0 |
| Kai Zhang | 1 | 43 |
| Kasai trading | 2 | 2 |
| Kase | 12 | 23 |
| Kazan Optical and Mechanical Plant (KOMZ) | 9 | 13 |
| KDE Community | 1 | 1 |
| KDEdu | 156 | 1699 |
| Keith Wiley | 1 | 4 |
| Kendrick | 23 | 403 |
| Kenko | 20 | 74 |
| Kepler | 11 | 44 |
| Kessler Crane | 1 | 3 |
| Kiron | 2 | 3 |
| Kiwifotos | 4 | 23 |
| KMZ | 2 | 2 |
| Knightware, LLC | 3 | 179 |
| Knopf | 3 | 226 |
| Kodak | 7 | 35 |
| Kodak / ON Semi | 0 | 0 |
| Koheisha | 1 | 6 |
| Kolari Vision | 3 | 6 |
| Kolor | 12 | 48 |
| Konica | 1 | 3 |
| Konus | 13 | 416 |
| KOWA | 6 | 65 |
| Krasnogorsky Zavod (KMZ) | 4 | 36 |
| Krita Foundation | 6 | 39 |
| KT&C | 1 | 5 |
| Kunming United Optics | 2 | 1 |
| KW Telescope | 1 | 12 |
| Lacerta | 565 | 9950 |
| Laida Optics Store | 3 | 5 |
| LakesideAstro | 7 | 52 |
| Laowa | 20 | 31 |
| LattePanda | 1 | 14 |
| Laurent Bourgon | 8 | 214 |
| Lecia | 0 | 0 |
| Lecia for Panasonic micro 4/3 camera | 0 | 0 |
| Leica | 21 | 70 |
| Leica 180mm F2 Summicron-R APO | 1 | 5 |
| Lemke Software | 1 | 7 |
| Lenovo | 0 | 0 |
| Leofoto | 6 | 18 |
| Levenhuk | 7 | 64 |
| LG | 10 | 17 |
| Lichtenknecker | 7 | 252 |
| Liebscher | 4 | 14 |
| limitoptic | 0 | 0 |
| Linhof | 1 | 1 |
| LMSAL, USA; NAOJ, Japan | 0 | 0 |
| Logitech | 58 | 292 |
| Lonely Speck | 2 | 9 |
| Long Perng | 32 | 236 |
| Losmandy | 329 | 4386 |
| LRTimelapse | 2 | 30 |
| Luc Coiffier | 3417 | 36373 |
| Lucien | 283 | 2599 |
| Luke Newbould | 1 | 3 |
| Lumenera | 23 | 3250 |
| Lumicon | 38 | 274 |
| Lunatico Astronomia | 124 | 1489 |
| Lunt | 353 | 4330 |
| LVI Cameras | 22 | 96 |
| M. Usatov | 4 | 24 |
| M27 trognon de pomme | 14 | 49 |
| M42Optic | 1 | 1 |
| MAGIX | 1 | 1 |
| MagZero | 125 | 2128 |
| Main SDSS telescope | 1 | 2 |
| Main Sequence Software | 1012 | 21773 |
| MAKPO | 2 | 3 |
| MallinCam | 33 | 411 |
| Mamiya | 10 | 51 |
| Manfred Wachter | 1 | 1 |
| Manfrotto | 108 | 489 |
| Mantona | 1 | 3 |
| Marcon | 2 | 4 |
| Maria Pavlou | 19 | 97 |
| Maris USM | 1 | 6 |
| Mark Tyler | 1 | 1 |
| Markus Enzweiler | 59 | 84 |
| Martin Burri | 1 | 1 |
| Martin Burri and Carsten Arnholm | 2 | 3 |
| Martin Junius | 0 | 0 |
| Martin Weiss | 1 | 3 |
| Marumi | 3 | 3 |
| Masahiro Kitagawa | 3 | 95 |
| Mathis Instruments | 102 | 695 |
| Mathworks | 0 | 0 |
| Matt Thomas | 9 | 178 |
| Matthew Brown | 3 | 6 |
| Mattia Procopio | 3 | 9 |
| Maxvision | 2 | 39 |
| McDonald Observatory | 2 | 2 |
| Meade | 774 | 8962 |
| Meade 10" LX200 Classic | 0 | 0 |
| MeeSoft | 1 | 24 |
| meFoto | 1 | 1 |
| Meike | 3 | 3 |
| MeLE | 134 | 1194 |
| Meowstar | 18 | 50 |
| Merz | 1 | 1 |
| Mesu-Optics | 46 | 764 |
| Metabones | 1 | 0 |
| Michael Seeboerger-Weichelbaum | 3 | 7 |
| Michael Theusner | 31 | 487 |
| Micro Focuser (closed) | 0 | 0 |
| Microprojects | 2 | 9 |
| Microsoft | 250 | 1355 |
| Mikael Finstad | 1 | 1 |
| Miloslav Druckmüller | 5 | 7 |
| minerlele | 3 | 32 |
| Minisforum | 2 | 35 |
| Minix | 4 | 83 |
| Minolta | 18 | 51 |
| MIOPS | 1 | 1 |
| MIR (Soviet Union) | 1 | 2 |
| Mischa Schirmer | 3 | 13 |
| Mizar | 1 | 4 |
| MLUnsold | 95 | 1551 |
| MOANA | 1 | 0 |
| Mogg | 1 | 17 |
| Mokose | 1 | 1 |
| MOOII Tech | 7 | 194 |
| Moonglow Technologies | 27 | 61 |
| MoonLite | 263 | 5261 |
| Moonraker | 1 | 78 |
| Moravian Instruments | 268 | 3435 |
| Morefine | 6 | 13 |
| Moritex | 4 | 8 |
| Motorola | 7 | 13 |
| Mountain Instruments | 11 | 126 |
| Move Shoot Move | 32 | 82 |
| MSB Software | 139 | 2532 |
| MSI | 1 | 55 |
| MT=120 | 1 | 1 |
| MTO | 11 | 34 |
| mtPaint | 0 | 0 |
| Multi Flattener 2 | 0 | 0 |
| MWOrion | 6 | 48 |
| n00mkrad | 1 | 4 |
| NASA | 52 | 267 |
| NASA/ESA | 4 | 50 |
| NATIONAL GEOGRAPHIC | 1 | 1 |
| Nauris | 3 | 53 |
| Nayam Amarshe | 1 | 1 |
| Nebulb Imaging S.L.U. | 0 | 0 |
| Neewer | 69 | 155 |
| New House Internet Services BV | 36 | 233 |
| New Moon Telescopes | 2 | 3 |
| NexDome | 5 | 36 |
| Nicola Amanda Mackin | 4 | 2 |
| Niels Noordhoek | 3 | 19 |
| Nikita Misiura | 650 | 5046 |
| Nikkor | 437 | 2023 |
| Nikon | 2963 | 23960 |
| Nilta | 1 | 2 |
| NINA | 0 | 0 |
| Nisi | 21 | 65 |
| Noctutec | 10 | 179 |
| Nodal Ninja | 1 | 1 |
| NOIRLab/IPAC/ESA/STScI/CfA | 77 | 1277 |
| Nokia | 11 | 40 |
| NoName | 2 | 8 |
| North Star Systems mfg co | 2 | 15 |
| Nova (Synta) | 1 | 7 |
| Novoflex | 1 | 13 |
| NPZ | 15 | 60 |
| NumPy Developers | 0 | 0 |
| Nyx Tech | 1 | 1 |
| O'Telescope | 841 | 10426 |
| Oben AT3565 | 1 | 1 |
| Oberwerk | 2 | 6 |
| Obsession Telescopes | 4 | 70 |
| OCAL | 2 | 18 |
| Octopi-Astro | 15 | 353 |
| Officina Stellare | 160 | 1164 |
| OG Star Tech | 3 | 4 |
| OGMA | 23 | 155 |
| Oleg Chekalin Astrotec Lab | 3 | 33 |
| Oleg Yurievich Sharonov | 2 | 10 |
| Olivier Cioni | 2 | 6 |
| Olympus | 169 | 1415 |
| OM System | 6 | 37 |
| Omega Optical | 3 | 27 |
| Omegon | 541 | 4025 |
| OmniCharge | 1 | 19 |
| Omnivision | 0 | 0 |
| On1 | 6 | 11 |
| OnePlus | 13 | 19 |
| Onn | 1 | 7 |
| OnStep | 25 | 426 |
| Open Astro Project | 11 | 22 |
| Open PHD Guiding Project | 2594 | 50990 |
| OpenAI | 1 | 0 |
| OpenAstroTech | 22 | 54 |
| OpenShot | 0 | 0 |
| Oppo | 2 | 2 |
| Optec | 226 | 3087 |
| Opteka | 7 | 26 |
| Optical Guidance Systems | 4 | 146 |
| Optical Techniques Inc. | 1 | 1 |
| Optical Vision Ltd (OVL) | 31 | 282 |
| Opticstar | 12 | 67 |
| Optolong | 5031 | 47666 |
| Orion | 2208 | 34403 |
| Orion Optics UK | 102 | 1010 |
| Oshiro | 2 | 14 |
| Pablo d'Angelo | 32 | 57 |
| Pál Gyulai | 67 | 1277 |
| Paladini-Filas | 0 | 0 |
| Palomar Observatory | 1 | 2 |
| Panagor | 0 | 0 |
| Panasonic | 130 | 520 |
| Parks | 1 | 3 |
| Paton Hawksley | 11 | 26 |
| Patrick Chevalley | 196 | 3259 |
| Paul Shears | 2 | 5 |
| Paul van SlyKe OAG | 0 | 0 |
| PaulymanAstro | 15 | 57 |
| Pavel Mráz | 7 | 158 |
| Pegasus Astro | 971 | 14647 |
| Pentacon | 21 | 69 |
| Pentaflex | 4 | 32 |
| Pentax | 283 | 2221 |
| Pentax 125SDP | 0 | 0 |
| Per Frejvall | 1 | 66 |
| Perl | 12 | 83 |
| Peter Katreniak | 1 | 1 |
| Petzl | 0 | 0 |
| Phase One | 32 | 205 |
| Philastro | 1 | 1 |
| Philips | 267 | 2168 |
| PHOTO PORST | 1 | 1 |
| Photokemi | 5 | 49 |
| Photoolex | 2 | 16 |
| Phottix | 1 | 1 |
| Picture Instruments | 8 | 77 |
| Pierro-Astro | 41 | 526 |
| PIPP v2.3 | 0 | 0 |
| Pixel | 14 | 164 |
| Pixelmator Team Ltd | 23 | 155 |
| PixelTeq | 4 | 4 |
| PixInsight Script | 0 | 0 |
| Pixlr | 2 | 1 |
| Planewave | 476 | 5272 |
| PlanIt Photo Inc. | 2 | 9 |
| Player One | 440 | 4757 |
| Pleiades Astrophoto | 8434 | 168301 |
| Pluto | 1 | 1 |
| pmneo | 1 | 68 |
| Point Grey | 30 | 320 |
| Polarex | 3 | 15 |
| Polarr, Inc. | 1 | 5 |
| Primaluce Lab | 471 | 5828 |
| Princeton Instruments | 1 | 2 |
| ProAstroGear | 13 | 81 |
| ProCamera | 1 | 12 |
| ProDigital Software | 217 | 3542 |
| Promaster | 1 | 1 |
| Prometheus Astro | 1 | 8 |
| PROTAGE | 1 | 1 |
| PTGui | 12 | 33 |
| Pulsar Observatories | 6 | 47 |
| Python Software Foundation | 2 | 1 |
| QGIS Development Team | 1 | 1 |
| QHYCCD | 3579 | 56470 |
| Qingkong | 0 | 0 |
| QSI | 551 | 12833 |
| Quantum | 0 | 0 |
| Quasar Optics | 4 | 6 |
| Quest Optics | 1 | 15 |
| Questar Corp | 3 | 5 |
| Radian | 215 | 1719 |
| Rainbow Astro | 161 | 1574 |
| Ralph Hill | 36 | 106 |
| Raspberry Pi | 86 | 743 |
| RB-Focus | 45 | 461 |
| RCOS | 44 | 263 |
| Really Right Stuff | 1 | 1 |
| Realme | 1 | 3 |
| Realtime Dreams Limited | 5 | 12 |
| RED | 0 | 0 |
| Redfield Plugins | 1 | 6 |
| Revelation Astro | 3 | 84 |
| Revolution Imager | 1 | 5 |
| RF | 0 | 0 |
| Richard Berry and James Burnell | 1 | 18 |
| Ricoh | 4 | 5 |
| Ricoh Imaging | 1 | 1 |
| Rigel Systems | 16 | 287 |
| RisingCam | 129 | 1327 |
| RM Astro | 1 | 3 |
| Robert Brown | 29 | 343 |
| Robert Hawley | 5 | 6 |
| Robert Mundt | 2 | 10 |
| Robert Nufer | 14 | 24 |
| Roberto Fornaciari | 1 | 4 |
| Robtics | 3 | 109 |
| Rodenstock | 1 | 1 |
| Rogelio Bernal Andreo | 35 | 511 |
| Roger N Clark | 4 | 41 |
| Rokinon | 373 | 1617 |
| Rolf Hempel | 41 | 236 |
| Rollei | 25 | 158 |
| Rollei Astroklar Lightpollution Filter 82 mm | 0 | 0 |
| Rother Valley Optics | 13 | 113 |
| Rouz Astro | 3 | 16 |
| Rovision ROV1801TL-A 8MP | 1 | 1 |
| Rowan Astronomy | 18 | 252 |
| RS VNS EQ platform | 0 | 0 |
| Rubinar | 5 | 15 |
| RupiApps | 1 | 2 |
| Russell Croman Astrophotography | 1631 | 21830 |
| Sabrent | 1 | 146 |
| Salvo Technologies | 0 | 0 |
| Samsung | 140 | 453 |
| Samyang | 1179 | 6448 |
| Sandor Cuzdi | 1 | 32 |
| Sandro Coletti Telescópios | 6 | 164 |
| Santel | 1 | 6 |
| Savage Interactive | 0 | 0 |
| Saxon | 96 | 478 |
| SBIG | 1011 | 16798 |
| Schneider Kreuznach | 1 | 22 |
| ScopeDome | 14 | 35 |
| Scopetech | 1 | 4 |
| ScopeTek | 0 | 0 |
| SeeK Thermal | 1 | 3 |
| Sense-Tech Innovation Company (STC) | 119 | 579 |
| Sensei | 1 | 9 |
| Seo Electronics Industry / 瀬尾電子工業 | 1 | 2 |
| Sequator | 0 | 0 |
| Sergio Díaz | 1 | 6 |
| Serif | 422 | 6090 |
| Serwis Astro | 1 | 5 |
| Several contributors | 103 | 804 |
| Seymour Solar | 10 | 17 |
| SharpCap | 0 | 0 |
| Sharpstar | 464 | 3649 |
| Shelyak | 6 | 34 |
| Sherizhe | 2 | 15 |
| Shoestring Astronomy | 6 | 38 |
| SHOWA | 2 | 0 |
| sidereal technology | 1 | 4 |
| Sidereal Trading | 6 | 179 |
| Sideres | 2 | 76 |
| Siebert Optics | 17 | 367 |
| Sightron Japan Inc. | 10 | 28 |
| Sigma | 621 | 2475 |
| SIIG | 1 | 27 |
| SiliconFields | 231 | 3698 |
| SimplyNUC | 1 | 16 |
| Simulation Curriculum | 77 | 1747 |
| Siril Team | 1982 | 15309 |
| Sirui | 9 | 28 |
| Sky Rover | 121 | 615 |
| Sky-Watcher | 8692 | 130754 |
| Skyhound | 15 | 195 |
| Skylum | 64 | 971 |
| Skymeca | 12 | 242 |
| Skyoptic | 2 | 11 |
| SkyRaider | 5 | 5 |
| SkyShed Observatories | 16 | 532 |
| Skyvision | 8 | 41 |
| Slik | 5 | 11 |
| SmartComponents | 2 | 2 |
| SmartSens | 0 | 0 |
| SMDV | 2 | 99 |
| Smithsonian Astrophysical Observatory | 0 | 0 |
| Software Bisque | 821 | 16077 |
| Sol'Ex | 0 | 0 |
| Solar Spectrum | 23 | 1115 |
| Solarcan | 3 | 3 |
| SolarFlex4 Sonnenfilter 265-285mm OD=5.0 | 0 | 0 |
| Solarscope | 4 | 189 |
| Soleye | 1 | 2 |
| Soligor | 6 | 58 |
| Solomark | 23 | 159 |
| Solomon Optics | 12 | 40 |
| Sony | 1265 | 8413 |
| Spacewalk Telescopes | 2 | 4 |
| Spectrum Telescope | 9 | 8 |
| Spencer's Camera & Photo | 2 | 7 |
| Spike-a | 13 | 310 |
| Stanley Dimant | 53 | 464 |
| Star Instruments | 2 | 28 |
| StarAid | 13 | 82 |
| Starblitz | 1 | 7 |
| Starfield | 63 | 736 |
| Starfixer by Filippo | 0 | 0 |
| Starizona | 696 | 6974 |
| Stark Labs | 582 | 8276 |
| Starkeeper | 231 | 4267 |
| Starlab | 4 | 30 |
| Starlight Instruments, LLC | 68 | 1633 |
| Starlight Xpress | 1245 | 25562 |
| Starmaster | 1 | 1 |
| StarNet | 0 | 0 |
| Starpoint Australis | 1 | 37 |
| Starry Dave | 1 | 12 |
| StarTech | 3 | 37 |
| StarTools | 96 | 1347 |
| Startracker | 2 | 1 |
| Stefan Berg | 2248 | 27764 |
| Steffen Hirtle | 533 | 3686 |
| StellaLyra | 32 | 235 |
| StellaMira | 47 | 954 |
| StellarCat | 4 | 31 |
| Stellarvue | 491 | 6801 |
| Stellarzac | 1 | 16 |
| Sternwarte Nuernberg | 1 | 7 |
| Steve Brady | 0 | 0 |
| STF | 2 | 2 |
| Sud Dobson | 3 | 7 |
| Sun OPT | 2 | 2 |
| Supermount | 4 | 16 |
| SVBony | 1562 | 12523 |
| Sweex | 0 | 0 |
| Tacklife | 1 | 3 |
| Tair | 11 | 28 |
| Takahashi | 1442 | 18241 |
| TAL | 10 | 521 |
| Talon | 1 | 37 |
| Tamron | 232 | 945 |
| Tasco | 4 | 26 |
| Taurus | 1 | 1 |
| Tawbaware Software | 1 | 2 |
| TeamViewer | 5 | 268 |
| TEC | 95 | 1273 |
| Technical Innovations | 12 | 494 |
| Tecnosky | 205 | 2121 |
| Teeter | 1 | 4 |
| Tele Vue | 647 | 7659 |
| Teledyne E2V | 0 | 0 |
| Teledyne FLIR | 3 | 120 |
| TeleGizmos | 3 | 97 |
| Telephoto Zoom Lens | 0 | 0 |
| Telescope Adapters | 0 | 0 |
| Telescope Jean Marc Salomon | 1 | 7 |
| Telescopi Italiani | 0 | 0 |
| Telescópios Matão | 1 | 1 |
| Telrad | 0 | 0 |
| TEPP Triangulum Equatorial Photographic Platform | 1 | 0 |
| Testar | 6 | 19 |
| Texas Instruments | 1 | 1 |
| The ASCOM Initiative | 82 | 1469 |
| The Astra Image Company | 117 | 1601 |
| The EQMOD Project | 127 | 1927 |
| The Imaging Source | 265 | 4796 |
| The RawTherapee Team | 83 | 846 |
| The University of Arizona | 4 | 4 |
| Thinkable Creations | 1 | 4 |
| Third Planet Optics | 1 | 12 |
| Thomas Carpenter | 3 | 26 |
| Thomas Cooke & Son of York | 1 | 1 |
| Thomas Jacquin | 2 | 2 |
| Thomas Jaeger | 1 | 16 |
| Thorlabs | 1 | 4 |
| Thousand Oaks Optical | 90 | 319 |
| Tiffen | 4 | 6 |
| Tinsley Laboratories Inc | 1 | 1 |
| TinyMOS | 1 | 1 |
| TMB Optical | 36 | 736 |
| TMS-Astro | 2 | 2 |
| Tobias Hüllmandel Software | 1 | 2 |
| Tokina | 65 | 108 |
| Topaz Labs | 1101 | 12406 |
| Topton | 1 | 1 |
| Torsten Edelmann | 758 | 13612 |
| Toscan Optics | 2 | 32 |
| ToupTek | 242 | 1784 |
| Toya | 2 | 4 |
| TP-Link | 6 | 69 |
| TPO | 114 | 1098 |
| Track the Stars | 7 | 50 |
| Trassud | 1 | 63 |
| Tronic | 1 | 1 |
| Tronsmart | 0 | 0 |
| True Technology Ltd | 1 | 177 |
| TS Boren-Simon | 1 | 1 |
| TS-Optics | 1648 | 21669 |
| Tssaper | 0 | 0 |
| TTArtisan | 12 | 30 |
| Ulead | 2 | 7 |
| UMI | 16 | 90 |
| Unibrain | 1 | 1 |
| Unihedron | 7 | 164 |
| Unistellar | 18 | 658 |
| UNITEC | 1 | 6 |
| Universal Astro | 9 | 57 |
| University of Arizona and Lockheed Martin | 0 | 0 |
| University Optics | 2 | 8 |
| Unspecified/unknown company | 228 | 2188 |
| Urth | 2 | 5 |
| USB_Focus | 3 | 89 |
| Valérie Desnoux | 10 | 67 |
| Van Slyke Engineering | 1 | 7 |
| Vanguard | 7 | 60 |
| Vansonly | 1 | 0 |
| Vaonis | 50 | 419 |
| Velbon | 8 | 25 |
| Vello | 0 | 0 |
| Venture | 1 | 2 |
| Venus Optics | 1 | 1 |
| VernonScope LLC | 1 | 1 |
| Victiv | 0 | 0 |
| Viltrox | 9 | 20 |
| VirtualHere Pty. Ltd. | 2 | 32 |
| Visionking | 2 | 15 |
| Vivitar | 16 | 30 |
| Vixen | 324 | 3354 |
| Voigtländer | 8 | 11 |
| Vologda Optical and Mechanical Plant (VOMZ) | 10 | 48 |
| Vonets | 1 | 1 |
| Vortex Optics | 1 | 2 |
| Voyager Optics | 2 | 3 |
| VTSB | 1 | 8 |
| W&W Astro | 1 | 17 |
| Walimex | 37 | 132 |
| WandererAstro | 53 | 396 |
| WarpAstron | 9 | 20 |
| Watec | 10 | 39 |
| Wega Telescopes | 5 | 26 |
| Welsh Dragon Computing | 7 | 158 |
| WEN | 1 | 1 |
| West Mountain Radio | 0 | 0 |
| WhiteSwan | 1 | 7 |
| widescreen centre | 1 | 9 |
| Wilco Kasteleijn | 5 | 64 |
| William Optics | 3730 | 37767 |
| Wyze | 2 | 2 |
| Xavier Jubier | 13 | 38 |
| XCSource | 1 | 18 |
| Xerxes Scientific | 1 | 9 |
| Xiaomi | 39 | 76 |
| XnSoft | 5 | 301 |
| Yashica | 6 | 7 |
| Yi-Ruei Wu | 204 | 454 |
| Yongnuo | 42 | 75 |
| Z CAM | 0 | 0 |
| Zeiss | 51 | 370 |
| Zeiss Distagon 28mm F2 ZF.2 | 0 | 0 |
| Zenit | 7 | 12 |
| Zenza Bronica | 1 | 2 |
| ZHONG YI OPTICS | 4 | 15 |
| Zhumell | 10 | 39 |
| Ziel | 2 | 12 |
| Zipproth GmbH | 5 | 36 |
| ZOMEi | 5 | 8 |
| ZONER a.s. | 3 | 48 |
| ZWO | 12156 | 232392 |
| 天虎裕众 | 0 | 0 |
