Forums in the Mobile App Development Niche

1. Microchip
https://www.microchip.com/forums/  

2. Tech Support Guy
Free computer help.
http://forums.techguy.org/  

3. Apolyton Civilization Site
Just missed out on a spot in the top 25.
https://apolyton.net/forum.php  

4. PetGroomer.com GroomerTALK and
Pet grooming forum for dog and cat groomers and mobile.
http://www.petgroomerforums.com/chat/forum.php  

5. Ubuntu Forums
A help and support forum for Ubuntu Linux.
http://ubuntuforums.org/  

6. www.dreamincode.net
https://www.dreamincode.net/forums/  

7. PPCGeeks
PPCGeeks is a site for PPC owners with discussion, reviews, news, links, downloads, and much much more. We cover Windows Mobile, Android, Windows Phone 7, Blackberry, iOS, and tablets.
http://forum.ppcgeeks.com/  

8. www.daniweb.com
Programming Forum - Our Programming forum category encompasses application development, web development, programming theory, and everything in between.
https://www.daniweb.com/programming/4  

9. Actualized.org Forum
A community of people interested in self-actualization, personal development, consciousness work, meditation, and enlightenment. Ask questions, share resources, get advice. Join for free.
https://www.actualized.org/forum/  

10. Site Owners Forums
Prime Web Development and Marketing forum!
https://siteownersforums.com/  

11. Webmasters, SEO, Internet Marketing & Digital Marketing Forum
WebmasterSun is the most popular webmaster and internet marketing forums. You will find more useful information and resource here!
https://www.webmastersun.com/forums/  

12. www.hrbuzz.com.au
HR Buzz is a collaboration resource for Australian HR people.
https://www.hrbuzz.com.au/forum/  

13. The Admin Zone
Forum has 143,405 topics.
https://www.theadminzone.com/  

14. thepersonaldevelopmentforum.com
Learn about Wisdom, Happiness & Excellence. Life-improvement, Personal Growth and Self-help.
https://thepersonaldevelopmentforum.com/  

15. ABestWeb Affiliate Marketing
Read through for news and resources on software development topics, including low-code-no-code, serverless computing and programming languages.
http://www.abestweb.com/forums/  

16. RaGEZONE
Forum has 6,349,499 posts.
https://forum.ragezone.com/  

17. Neowin
Forum has 316,926 members.
https://www.neowin.net/forum/  

18. Stargate SG-1 Roleplaying Game
https://stargatetherpg.com/forums/  

19. The PokéCommunity Forums
This is a Pokémon forum for Pokémon fans all over the world. Discussions include games, trading card game, strategies, TV series, movies, role play, fan fiction, and trivia
http://www.pokecommunity.com/  

20. Black Sea Studios Forums
Forum has 57,824 members.
http://forums.blackseastudios.com/  

21. CodingForums.com
Web coding and development forums. Get help on JavaScript, PHP, CGI, CSS, XML, and more.
http://www.codingforums.com/  

22. Webmaster Forums
Forum has 166,833 posts.
http://www.webmasterforums.com/  

23. Whirlpool.net.au
https://forums.whirlpool.net.au/  

24. Muscular Development Forums
Forum Description
https://forums.musculardevelopment.com/forum  

25. VBForums
Visual Basic Discussions plus .NET, C#, game programming, and more (http://www.VBForums.com)
https://www.vbforums.com/forum.php  

26. Games Dreams
Welcome to Games Dreams - Discussion forums for Facebook games, browsers games, MMO games, flash games, android games, iPhone iPad games, etc.
https://gamesdreams.com/  

27. kirupaForum
Got a web design/development question or just want to hang out with the most awesome people on the planet? Drop on in!
http://www.kirupa.com/forum/  

28. RunningForums.com
This website is for sale! runningforums.com is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here,...
http://www.runningforums.com/index.php  

29. ChiefTalk Forum
https://chieftalk.chiefarchitect.com/  

30. CodeGuru Forums
Hard hitting articles, dicussions, resources, and more all focusing for real developers in the real world.
https://forums.codeguru.com/index.php  

31. Overclockers UK Forums
Overclockers UK Forum powered by Xenforo
http://forums.overclockers.co.uk/  

32. DJI Tello Drone Forum
DJI Ryze Tello Drone Help, Discussions and Community. If you fly the DJI Tello then you'll want to join TelloPilots.com to discuss the latest technologies and uses for the Tello drone.
https://tellopilots.com/  

33. GSM-Forum
Welcome to gsm-forum, here you find all infos about android, windows mobiles, iphones, flashing, repair, unlocking, root, development software, firmwares.
https://forum.gsmhosting.com/vbb/  

34. WarriorForum
Giving you what you need to take your internet and digital marketing to the next level since 1997. Join the community of 1+ million other marketers today.
http://www.warriorforum.com/  

35. Geek/Talk Webmaster
Forum has 24,648 members.
https://www.geekvillage.com/forums/  

36. RPG Maker Forums
Forum software by XenForo
https://forums.rpgmakerweb.com/  

37. Home Theater Forum and Systems
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, home theaters, troubleshooting, projects, DIY’s, product reviews and more!
http://www.hometheatershack.com/forums/  

38. www.go4expert.com
Forum has 25,079 topics.
https://www.go4expert.com/forums/  

39. Java Forums at the Big Moose S
https://www.coderanch.com/forums/  

40. Computer Science Forums
Computer Science Forums for Computer Science and Engineering (CSE), Data Structures and Algorithms, Programming Language Theory, Computations, Computer Systems, Computer Applications, Technology
https://computerscienceforums.com/  

41. Overclock.net
A forum community dedicated to overclocking enthusiasts and testing the limits of computing. Come join the discussion about computing, builds, collections, displays, models, styles, scales,...
http://www.overclock.net/f/  

42. SysOpt Forums
This is a discussion forum for all aspects of computer systems optimization and customization
https://www.sysopt.com/forum.php  

43. BattleOn Forums!
https://forums2.battleon.com/f/  

44. KVR: Forum Index
KVR Audio Forum - Forum - VST Plug-in, AU, AAX, Audio Software Discussion
https://www.kvraudio.com/forum/  

45. Cable
Virgin Media (ex ntl & Telewest) Customer support and community forum
https://www.cableforum.co.uk/board/  

46. Newgrounds.com
https://www.newgrounds.com/bbs/  

47. Beyond3D Forum
The world's best online 3D graphics discussion!
http://forum.beyond3d.com/  

48. Accessify Forum: Web Accessibility Discussion Forums
Discussion about making websites accessible to people with disabilities.
http://www.accessifyforum.com/  

49. affLIFT
Affiliate marketing forum filled with over 50,000 affiliates and exclusive guides, case studies, and example affiliate marketing campaigns!
https://afflift.com/f/  

50. www.elitetrader.com
Elite Trader is the #1 site for traders of stocks, options, currencies, index futures, and cryptocurrencies.
https://www.elitetrader.com/et/