Originally from this HN post which referenced this HN post . Special thanks to TripHappy for letting me use their updated list from this blog post.

• /r/AlphaandBetausers - https://www.reddit.com/r/alphaandbetausers/
• /r/Coupons - https://www.reddit.com/r/coupons/
• /r/DesignCritques - https://www.reddit.com/r/design_critiques/
• /r/Entrepreneur - http://reddit.com/r/entrepreneur
• /r/IMadeThis - http://reddit.com/r/imadethis
• /r/IndieBiz - https://www.reddit.com/r/indiebiz/
• /r/LadyBusiness - https://www.reddit.com/r/ladybusiness/
• /r/RoastMyStartup - https://www.reddit.com/r/roastmystartup
• /r/ShamelessPlug - https://www.reddit.com/r/shamelessplug/
• /r/SideProject - http://reddit.com/r/sideproject
• /r/SmallBusiness - https://www.reddit.com/r/smallbusiness/
• /r/Startups - http://reddit.com/r/startups
• 101 Best Websites - http://www.101bestwebsites.com/
• Addictive Tips - http://www.addictivetips.com/
• AdHipster - https://adhipster.com/
• All My Faves - http://www.allmyfaves.com/
• All Startups - http://www.allstartups.info/Startups/Submit
• All Top Startups - http://alltopstartups.com/submit-startup/
• Alternative To - http://alternativeto.net/
• Angel List - https://angel.co/join
• App 400 - http://apps400.com/
• App Advice - http://appadvice.com/page/about-us
• App Appeal - http://www.appappeal.com/contact/suggest
• App Rater - https://apprater.net/add/
• App Storm - http://formstack.com/forms/envato-appstorm_review
• Appcrawlr - http://appcrawlr.com/
• Appoid - http://appiod.com/submit-app-for-review/
• appPicker - http://www.apppicker.com/
• Apps 400 - http://apps400.com/submit-your-application-for-review
• Apps Listo - http://appslisto.com/submit-your-app/
• Apps Mamma - http://appsmamma.com/submit-your-app/
• Apps Mirror - http://www.appsmirror.com/submit-your-app-for-review
• AppsNow - http://appsnow.us/submit-app-for-review/
• AppsThunder - http://appsthunder.com/submit-your-app/
• AppStorm - http://appstorm.net/
• Appvita - http://www.appvita.com/
• AppZapp - http://www.appzapp.net/en/app-review-request/
• Arctic Startup - http://arcticstartup.com/
• Beta Bound - http://www.betabound.com/announce/
• Beta Page - https://betapage.co/
• Betafy - https://www.betafy.co/easysignup/startup
• BetaList - https://betalist.com/submit
• Beterest - https://beterest.com/submit-startup/
• Boing Boing - http://boingboing.net/sub/
• BreakPoint - https://breakpoint.io/new/
• BuiltInChicago - http://www.builtinchicago.org/send-us-tip
• Capterra - http://www.capterra.com/vendors/sign-up
• Cloud Surfing - http://www.cloudsurfing.com/
• CloudBook - http://www.cloudbook.net/directories/product-services/product-company-search.php
• CloudShowPlace - http://www.cloudshowplace.com/add-your-company/
• Cnet - https://upload.cnet.com/
• Collaborizm - https://www.collaborizm.com
• Crazy About Startups - http://www.crazyaboutstartups.com/index.php/share-your-startup-form
• CrozDesk - https://vendor.crozdesk.com/user/signup
• Crunch Base - https://www.crunchbase.com/#/home/index
• CSS Mania - http://www.cssmania.com/submit/
• Designer News - https://www.designernews.co/
• Digg - http://digg.com/submit
• Discova - http://www.discova.co/
• Discover Cloud - https://www.discovercloud.com/become-a-vendor
• Erlibird - https://erlibird.com/beta-testing
• F6S - http://www.f6s.com/
• Feed My App - https://feedmyapp.com/submit/
• FireSpotting - http://firespotting.com/submit
• G2 Crowd - https://www.g2crowd.com/products/new
• Geek Wire - http://geekwire.com/startup-list/
• Geekopedia - http://geekopedia.me/startupsubmit
• Get App - http://getapp.com/
• Getworm - https://getworm.com/submit-startup
• Gust - https://www.gust.com
• Hackerstreet - https://in.thehackerstreet.com/
• Haro - https://www.helpareporter.com/sources/
• I Am Wire - http://www.iamwire.com/startups/user/register?uType=Entrepreneur
• Idea Hunt - http://ideahunt.io/
• Inc 42 - https://inc42.com/startup-submission/
• Index.co - https://index.co/startup
• Just Gone Live - http://www.justgonelive.com/add-listing
• Killer Startups - http://killerstartups.com/submit-startup/
• Land-book - https://land-book.com/guidelines
• Launching Next - http://www.launchingnext.com/submit/
• Launch List - https://launchlister.com/submit-startup
• Launched - https://launched.io/SubmitStartup
• MakeUseOf - http://www.makeuseof.com/about/
• Maqtoob - https://maqtoob.com/submit-a-tool
• Mevvy - https://mevvy.com/submit-app/
• Mobilzed - https://www.moblized.com/vendors/register
• Museum of Modern Beta - http://momb.socio-kybernetics.net/about
• Netted - https://www.netted.net/contact-us/
• New-Startups - http://www.new-startups.com/submit/
• Next Big Product - http://nextbigproduct.net/product-submission/
• Next Big What - http://nextbigwhat.com/
• Nibletz - http://www.nibletz.com/submit-startup
• On the App - http://ontheapp.com/about/
• Owler - https://www.owler.com/
• Paggu - http://www.paggu.com/submit-your-startup/
• pFind - http://www.pfind.com/submit
• Pineapple - http://pineapple.io/resources/new
• Postscapes - http://about.postscapes.com/tools
• PreApps - http://www.preapps.com/
• Product Hunt - http://www.producthunt.com/
• Programmable Web - https://www.programmableweb.com/news/how-to-pitch-programmableweb-covering-your-news/2016/11/18
• PublicityX - https://www.publicityx.com/startups/new
• Rate My Startup - http://ratemystartup.com/submit-your-startup/
• Really-aweso.me - http://www.really-aweso.me/submit-your-startup/
• Reikut - https://reikut.com/
• Rev 2 - http://www.rev2.org/
• Robingood - http://tools.robingood.com/
• Show HN - https://news.ycombinator.com/showhn.html
• Side Projectors - https://www.sideprojectors.com
• Side Projects - http://sideprojects.web3canvas.com
• Signup First - http://signupfirst.com/
• SimilarSites - http://www.similarsites.com/
• SimilarSiteSearch - http://www.similarsitesearch.com/tips.html
• Slant - https://www.slant.co/
• SnapMunk - https://www.snapmunk.com/submit-your-startup/
• Software Advice - https://softwareadvice-markets.questionpro.com/
• Springwise - http://springwise.com/tipus/
• Stack Share - http://stackshare.io/
• Start HQ - https://starthq.com/apps/submit
• Start-ups - http://www.start-ups.co/startup-interview-questionnaire/
• Startup 88 - https://startup88.com/
• Startup Base - https://startupbase.io/submit
• Startup Beat - http://startupbeat.com/startup-beat-featured-startup-pitch-guidelines/
• Startup Buffer - http://startupbuffer.com
• Startup Collections - http://startupcollections.com/
• Startup Dope - http://startupdope.com/submit-news/
• Startup Inspire - https://www.startupinspire.com/submit
• Startup Lift - http://www.startuplift.com/
• Startup Ranking - http://www.startupranking.com/
• Startup Register - http://startupregister.net/register-your-startup/
• Startup Resources - https://startupresources.io
• Startup Stash - http://startupstash.com/
• Startup Tabs - http://startuptabs.com/
• Startup88 - http://startup88.com/
• StartupBlink - http://www.startupblink.com/
• State of Tech - http://stateoftech.net/advertise?submit-an-app-for-review
• Stumbleupon - http://www.stumbleupon.com/submit
• Tabscape - https://www.tapscape.com/
• Tech Crunch - https://techcrunch.com/got-a-tip/
• Tech Faster - http://techfaster.com/submit-your-company/
• Tech Greet - http://www.techgreet.com/submit-your-tech-startup/
• Tech Map - http://thetechmap.com/
• Tech Pluto - http://www.techpluto.com/submit-a-startup/
• Tech Tips - http://techattitude.com/contact/
• The Changelog - https://github.com/thechangelog/ping
• The iPhone Mom - https://www.theiphonemom.com/
• The Startup Pitch - http://thestartuppitch.com/post-a-pitch/
• Top Alternatives - https://topalternatives.com/
• Top Similar Sites - http://www.topsimilarsites.com/add.aspx
• Trust Radius - https://www.trustradius.com/
• Vator - http://www.vator.tv/
• VB Profiles - http://vbprofiles.com/
• Venture Beat - http://venturebeat.com/news-tips/
• Venture Bin - http://www.venturebin.com/submit-venture/
• Venture Break - http://venturebreak.com/questions/
• Web App Rater - http://www.webapprater.com/webapprater-free-app-review
• Webmenu - http://webmenu.org/
• Ycombinator - https://news.ycombinator.com/
• YouNoodle - https://ww2.younoodle.com/startups/
• Your Story - https://profiles.yourstory.com/

To the extent possible under law, Matt McCaffrey has waived all copyright and related or neighboring rights to this work.