Here's a long list of subreddits that you may not have heard of. To help browse this list, I have provided a link to one of the top posts from each of these subs that best define the subreddit. The link is under the row "Eg".

|Type|Name|Description|Eg|Related Subreddits
|----|----|----|----|----|
**Money Saving**| /r/LowestPrice| Lowest Price Items at Amazon| [1](http://www.reddit.com/tb/1hx0i6) |^/r/LowestPriceUK
 | /r/Freebies | Free Items| [1](http://reddit.com/tb/1i30mg) | ^/r/eFreebies
 | /r/buildapcsales | Deals on Pc parts | [1](http://reddit.com/tb/1i2gta) | ^/r/buildapcsalesuk
 | /r/buyitforlife|Durable products that should last you a lifetime | [1](http://i.imgur.com/xN8dDVX.jpg) |
 | /r/frugalmalefashion | Deals on clothes | [1](http://reddit.com/tb1579zs) | ^^/r/FrugalFemaleFashion
 | /r/gamedeals|Deals on Games | [1](http://reddit.com/tb/1i39qc)|
 | /r/AppHookup|Discounted Paid Apps or Apps gone free |[1](http://reddit.com/tb/1humrf)
 | /r/beermoney|Ways to make money online | [1](http://reddit.com/tb/vafy8) |
 | /r/frugal | Learn how to be Prudent or economical in the use of consumable resources such as food, time or money | [1](http://i.imgur.com/OXELS.jpg)
**Pictures**|/r/EarthPorn |  Beautiful natural landscapes | [1](http://i.imgur.com/AKmEABH.jpg) | /r/AbandonedPorn  /r/HistoryPorn
 | /r/Pareidolia|Stuff that looks like something its not | [1](http://i.imgur.com/6H2VVCj.jpg) | ^/r/illusionporn
 | /r/perfecttiming|Pictures taken just at the right moment | [1](http://i.imgur.com/TRRhZse.jpg) |
 | ^/r/ImaginaryLandscapes|Digital creations of landscapes or scenery | [1](http://i.imgur.com/KTryySU.jpg) |
 | ^/r/TreesSuckingOnThings|Tress sucking on things | [1](http://i.imgur.com/aER9cBu.jpg) | ^^/r/TreesSuckingAtThings
 | /r/minimalism | For those who appreciate simplicity in any form | [1](http://i.imgur.com/KrJZTLq.jpg) | ^/r/minimalwallpaper  /r/bench      /r/Blue
**Animals**| /r/animalsbeingjerks |  Videos, gifs, and images of animals being total jerks | [1](http://i.minus.com/i5WipgbyRnfCP.gif) | ^/r/BirdsBeingDicks  ^/r/AnimalsBeingDerps  ^/r/AnimalsBeingBros
  | /r/BirdsWithArms|Birds With Arms | [1](http://i.imgur.com/VUF2L.jpg) | ^/r/ArmedBirds ^/r/BirdsWithHats      ^/r/BearsWithBeaks       ^/r/animalswithoutnecks          ^/r/CatsStandingUp         ^/r/bearsdoinghumanthings
  | /r/trollinganimals | Animals playing pranks | [1](http://i.imgur.com/OHq4W5o.gif) | /r/CatPranks
 | /r/gentlemanimals | Animals doing human things | [1](http://i.imgur.com/1ZLyE.jpg) | ^/r/Delightfullychubby
**Gifs** | /r/ReactionGIFS | Physical or emotional response that is captured in a gif | [1](http://reddit.com/tb/1a40s8) | /r/HighlightGIFS /r/upvotegifs
 | /r/GamePhysics | Games that are glitching out in hilarious ways | [1](http://i.imgur.com/PxB6TsZ.gif) |
 | /r/Unexpected | Gifs,Videos with an unexpected twist | [1](http://i.imgur.com/vNDvywT.gif) | /r/awwwtf
 | /r/gifsound | Gifs with sound | [1](http://www.reddit.com/r/GifSound/comments/zelx3/that_is_his_jam/) |
 | ^/r/chemicalreactiongifs | Gifs of Chemical Reactions | [1](http://i.imgur.com/INKrGUS.gif) | ^/r/ThingsthatBlowUp  ^/r/brokengifs  ^/r/combinedgifs
 | /r/BlackpeopleGifs |  Gifs of the Black Community | [1](http://i.imgur.com/U8gg6.gif) |
**Reddit  Specific** | ^/r/SubredditOfTheDay | One awesome subreddit every single day | [1](http://reddit.com/tb/15sfb1) | /r/newreddits  /r/weeklyreddit   /r/browsemyreddit  /r/serendipity
 | /r/findareddit | Find the subreddit you were looking for | [1](http://reddit.com/tb/1gngkb) | /r/tipofmytongue
 | /r/theoryofreddit | Discussion about reddit| [1](http://reddit.com/r/TheoryOfReddit/comments/15goza/is_reddit_experiencing_a_brain_drain_of_sorts_or/) | /r/metahub
 | /r/ideasfortheadmins | Suggest ideas for the reddit admins | [1](http://reddit.com/tb/1gy484) |
 | /r/TrueReddit  | A place for anything and everything |[1](http://reddit.com/tb/zv1a6)| /r/redditdotcom
 | /r/MuseumOfReddit | The Good and Bad about Reddit | [1](http://reddit.com/tb/cmwov) | /r/OutOfTheLoop   /r/SubredditDrama
**Motivational** | /r/GetMotivated | Get up and do what you know you need to do | [1](http://i.imgur.com/oXoUMiP.jpg) | /r/GetDisciplined /r/GetOutOfBed
 | /r/UpliftingNews |  Uplifting, inspirational, feel good news stories from around the globe | [1](http://i.imgur.com/9d9Ymdi.png) |
 | /r/ProgressPics | Reddit to post those awesome before/after pictures of yours | [1](http://i.imgur.com/y3SegVJ.jpg) |
 | /r/MMFB | Make me feel good | [1](http://reddit.com/tb/12wpl7) | /r/MadeMeSmile
**Food** | /r/FoodPorn | Pictures of mouth watering dishes with recipes | [1](http://i.imgur.com/TS7KB.jpg) |/r/Recipes  /r/fffffffuuuuuuuuuuuud
 | /r/BudgetFood | Food on a budget | [1](http://i.imgur.com/LTrZEni.jpg) |
 | ^/r/52weeksofcooking |  Challenge to cook with a new ingredient or theme each week | [1](http://reddit.com/tb/nyqbf) |
**Jokes** | /r/Jokes | Jokes and any other funny things | [1](http://reddit.com/tb/16yjdj) | /r/LatvianJokes  /r/AntiJokes
 | /r/standupshots|Standup comedy through pictures | [1](http://i.imgur.com/D7Aa3.jpg) | /r/Screenshots
 | /r/calvinandhobbes|Calvin and Hobbes Comic | [1](http://i.imgur.com/OfehY.jpg) |/r/Comics  /r/Webcomics  /r/Polandball
 | /r/HumorousReviews|Product reviews that makes you chuckle | [1](http://i.imgur.com/xowl52T.jpg) | /r/YoutubeComments
**Discussion  Based** | /r/Foodforthought | Intelligent and thought-provoking commentaries on life | [1](http://reddit.com/tb/1cus11) |/r/indepthstories  /r/RedditForGrownups  /r/self
 | /r/TrueAskReddit | Intelligent discussion about interesting issues |[1](http://reddit.com/tb/1fn4j8) | /r/NoStupidQuestions
 | /r/ChangemyView | For people who have an opinion on something but accept that they may be wrong or want help changing their view. | [1](http://reddit.com/tb/1dpfgl) | /r/offmychest
 | /r/TalesFromRetail | Exchange stories about your bosses, employees, or those interesting customers you see daily | [1](http://reddit.com/tb/1d8v0y) |/r/thathappened
 | /r/AskScience | Questions about Science | [1](http://reddit.com/tb/15in05) | /r/AskHistorians  /r/AskEngineers  /r/AskCulinary  /r/Ask_Politics  /r/AskSocialScience
 | /r/explainlikeIAmA | Explain like I am A ___ | [1](http://reddit.com/tb/1f2rbo) | ^/r/explainlikeimfive   ^/r/ExplainLikeImCalvin  ^/r/explainlikeimjive
**Gifting** | /r/RandomKindness | Gift Random Strangers | [1](http://reddit.com/tb/njefl) | ^^/r/Random_Acts_Of_Pizza  ^^/r/Random_Acts_Of_Amazon ^^/r/Random_Acts_Of_Gaming ^^/r/Random_Acts_of_Books  ^/r/snackexchange/  ^/r/playitforward
**Movies** | /r/youtubehaiku | Short poetic videos on youtube | [1](http://www.youtube.com/watch?v=wp9mbVfDMCQ) | /r/ArtisanVideos
 | /r/netflixbestof | Best movies/shows available on netflix | [1](http://reddit.com/tb/1i39ho)| /r/MovieaWeek
 | ^/r/FullMoviesOnYoutube | Full movies on youtube | [1](http://www.youtube.com/watch?v=qyIZK7GWSPI&feature=youtu.be&t=1s) | /r/MovieSuggestions /r/badmovies
 | /r/trailers|Movie trailers | [1](http://www.youtube.com/watch?v=gqUcOx1iSaM&hd=1) |
 | /r/TrueFilm|In-depth discussions about films | [1](http://reddit.com/tb/10hdgy)| /r/FanTheories
 | /r/CordCutters|Ditch your cable/satellite TV and stream for cheap | [1](http://www.reddit.com/tb/1hpv5g) |
 | /r/Cinemagraphs | Cinemagraphs| [1](http://i.imgur.com/M79fJy9.gif) |
**Meme Based** | /r/firstworldproblems | Problems you can only have if you have money| [1](http://i.imgur.com/T3nEc.jpeg)| /r/ancientworldproblems /r/infiniteworldproblems
 | ^/r/ImGoingToHellForThis | Tasteless, politically incorrect, dark, offensive, & twisted humor of all types |[1](http://i.imgur.com/RtQezQA.jpg) | /r/TooSoon
 | /r/classicrage|Rage comics|[1](http://i.imgur.com/AgJ5A.png)|/r/historicalrage
 | ^/r/TournamentOfMemes|The ultimate memes fight out | [1](http://reddit.com/tb/vuimy)|
 | ^/r/FirstWorldAnarchists |Anarchy at its tamest | [1](http://i.imgur.com/MCxfJ.jpeg)
**Gaming** | /r/Gaming4Gamers | Discussion based on gaming | [1](http://www.youtube.com/watch?v=mlt8G3lhl3w) |
 | /r/CreepyGaming|Place for all the creepy, unintentional things that can happen in video games | [1](http://i.imgur.com/k2GkD.jpg) |
 | /r/gamemusic|Music from games | [1](http://www.youtube.com/watch?v=ypNgvc6c6Cc) |
 | /r/playdate|Discovering new, often inactive, games and playing games with other redditors | [1](http://reddit.com/tb/j8ib0) |
 | /r/battlestations |Pictures of awesome battlestations | [1](http://i.imgur.com/ESYy8.jpg) | /r/shittybattlestations
**Art/ Photography** | /r/photoshopbattles |  A subreddit for people to create new images | [1](http://imgur.com/a/z449L) | /r/mspaintbattles  /r/photoshawwp
 | /r/ICanDrawThat | Request a drawing, or announce that you will draw for people | [1](http://www.reddit.com/tb/131n9x)| /r/redditgetsdrawn  /r/usernamesillustrated
 | /r/alternativeart | Pictures of cartoons or movies that have been redrawn in a different style |[1](http://i.imgur.com/JXsZUFw.gif)| /r/DoodleOrDie  /r/sketchdaily /r/Heavymind  /r/WTFart  /r/IDAP
 | /r/itookapicture | A subreddit about photography techniques and styles | [1](http://i.imgur.com/ieRFPQ3.jpg) |
 | ^/r/PropagandaPosters | A subreddit for propaganda collectors, enthusiasts | [1](http://i.imgur.com/OvjC9HL.jpg) |
**Music** | /r/listentothis | A place to discover new music by new or overlooked artists | [1](http://www.youtube.com/watch?v=vsvlsuLau5c&feature=youtu.be) | /r/albumaday /r/pirateradio
 | ^^/r/WeAreTheMusicMakers | A subreddit for hobbyists, professional musicians, and enthusiasts to discuss | [1](http://i.imgur.com/hkE2qVZ.jpg) |
 | /r/futurebeats | Discussing experimental beat music from all genres and eras  |  [1](http://www.youtube.com/watch?v=anGOusJGCzQ) | /r/mashups
**^Miscellaneous** | /r/MISC | Post whatever you want | [1](http://www.reddit.com/tb/1bvn1x/) |
 |^^/r/IsJewBoyMarriedYet |  A boy who shares his journey whether he ever gets married and about all the things that happen on the way| [1](http://i.qkme.me/3t54xr.jpg)
 | /r/gonewilder|The place for going even wilder | [1](http://i.imgur.com/O0HJ0KF.jpg) | /r/avocadosgonewild  /r/OneTrueGod
 | /r/ToasterRights|Making the world a better place for toasters to live | [1](http://i.imgur.com/zizRh2E.gif) | /r/picsofdeadtoasters /r/ToastersGW
 | /r/beardporn|Because beards are awesome |  [1](http://i.imgur.com/yxfu7.jpg) | /r/shaveoftheday
 | ^/r/A858DE45F56D9BC9 | No one know whats going on |[1](http://reddit.com/tb/1aq1td) | /r/nyxnyxnyx /r/ggggg    [/r/___](http://reddit.com/r/___) /r/Ooer
 | /r/FifthWorldPics|A world way different than ours | [1](http://i.imgur.com/O4XS55f.gif) |/r/fifthworldgonewild  /r/shittyfifthworldpics
 | /r/whowouldwin|Who would win  between X and Y| [1](http://i.imgur.com/7TreUgL.jpg) |
 | /r/bitchimabus|Bitch, I'm A Bus|[1](http://i.imgur.com/luM3MeX.gif) | /r/FuckYouImAShark
 | /r/GreenDawn|Global Takeover|[1](http://i.imgur.com/W5R1D.jpg) |
**Interesting Subs**|/r/Frisson|Things that get you physical tingle, chills, goosebumps | [1](http://i.imgur.com/VUrMR.jpg) | /r/asmr  /r/woahdude
 | /r/FiftyFifty|Its either really good or really bad | [1](http://www.reddit.com/tb/18383v) |
 | /r/CrazyIdeas|Links that you think best fit the categories of Craziest, Most likely to be life or world changing |[1](http://reddit.com/tb/13idgk) |
 | /r/MildlyInteresting|Stuff that interests you. Mildly | [1](http://i.imgur.com/WZ6lR.jpg) | /r/MildlyInfuriating  /r/InterestingAsFuck  /r/fascinating /r/notinteresting
 | ^/r/LearnUselessTalents|Things that make you stand out in a way that makes people go "that's cool but why do you know that? | [1](http://i.imgur.com/nNy9scE.jpg)|/r/iwanttolearn //r/logophilia  ///r/juggling
 | /r/thingsforants|A sub that is all about tiny things for ants|[1](http://i.imgur.com/cVEgPte.jpg) |
 | /r/NotTheOnion|True stories that are so ridiculous, that you could have sworn it was an onion story |[1](http://reddit.com/tb/1g9fpa)|
 | /r/ifyoulikeblank|If you like this then you will surely like that | [1](http://www.reddit.com/tb/i5ent) |
 | /r/dataisbeautiful|Visual representation of data: Graphs, charts, maps|[1](http://i.imgur.com/sLIni2t.png)| /r/estimation   /r/Infographics
 | ^/r/wheredidthesodago|Ads taken out of context in animated images|[1](http://i.minus.com/ioU5XRyBrJTSN.gif)
 | /r/fatpeoplestories |A place to post stories about fat people |[1](http://i.imgur.com/T5nwBKu.jpg) | /r/Showerthoughts
 | /r/nostalgia|All the things we forgot that we remember |[1](http://i.imgur.com/1mO65qB.jpg) |
 | /r/MorbidReality|A subreddit devoted to the most disturbing content the internet| [1](http://i.imgur.com/ihTnzCw.jpg) |
 | /r/pettyrevenge|Stories about how someone took a revenge on someone | [1](http://reddit.com/tb/19760w) | /r/prorevenge
 | /r/LucidDreaming/|Learn to control your dreams and share the stories with others | [1](http://reddit.com/tb/spfbo) |
 | ^/r/colorizedhistory|Black and white images colorized using digital softwares | [1](http://i3.minus.com/i8xd8R01QkfNV.JPG)
 | ^/r/techsupportmacgyver|Using unorthodox methods to get something working again | [1](http://imgur.com/a/lv7FL) | /r/24hoursupport /r/TechSupportGore
 | /r/internetisbeautiful|Interesting things around the web | [1](http://www.reddit.com/tb/1cdyxo)
 | /r/outside|The whole world is an MMORPG | [1](http://reddit.com/tb/1hq97q) |
 | /r/futurology|A subreddit devoted to speculation about the future  | [1](http://i.imgur.com/G88xA.jpg) |
 | /r/puzzles|Puzzles | [1](http://reddit.com/tb/1hp1nz) |
 | /r/nononono | A subreddit for videos and GIFs of people breaking valuable things | [1](http://i.imgur.com/kD4Zq.gif) |
 | /r/nosleep | Share original scary stories |[1](http://reddit.com/tb/10nadn) | /r/FearMe /r/creepy_gif |
 | /r/whatisthisthing | What is this thing | [1](http://reddit.com/tb/17nudp)| /r/whatsthisworth  /r/whereisthis /r/whatsthisbug/
**Self Improvement** | /r/lifeprotips | Tips that improves your life in a meaningful way | [1](http://reddit.com/tb/13r2af)| /r/lifehacks /r/YouShouldKnow  /r/everymanshouldknow
 | /r/zenhabits | Simple and practical wisdom on happiness, goals, relationships, meditation, and self improvement |[1](http://i.imgur.com/NTaCvhd.jpg) |
 | /r/howtonotgiveafuck | Learn how to not give a fuck | |
 | /r/EDC|Every Day Carry Items|[1](http://i.imgur.com/kSl7z.jpg) |
 | /r/DIY|All things related to doing, building, fixing things on your own|[1](http://imgur.com/a/QkYHH#0) | /r/somethingimade
 | /r/learnprogramming|Learn Programming|[1](http://reddit.com/tb/waln8) | /r/LearnPython


It took me a week to compile this. I have excluded a lot of niche subreddits which you can easily find by typing the name directly. This includes subreddits dedicated to particular sports (/r/nfl, /r/hockey), sports teams, countries, games (/r/battlefield3), platforms (/r/ps3) etc etc.


Did you know that reddit has a 15000 word limit on text posts? And I am pretty close to