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App / Site Mockups ​

PostSpark, Mockup World, DeviceShots, MockMagic, zippypixels, Mockuphone, TheMockupClub, RiseShot, Upmock, LS Graphics, Picasso, mrmockup, mockupnest, Jam Mockup

Data Visualization Tools ​

DGM, ⁠MakeGraph, DrawDB / Discord, Flourish, Datawrapper, Chart.xkcd, QuickChart, ParaView, yEd Live, Mermaid / Terminal Render / GitHub, SwimLanes, Quiver, Gephi, Graphviz / Editor, Graphonline, diagramgpt, text2diagram, SankeyMATIC, flowgorithm, Chart Builder, ⁠JSON Crack / GitHub, PlantUML

Design Resources ​

design-resources-for-developers, Freebies.ByPeople, Design Bundles, Design Resources, GraphicsFuel, Pixeden, Interfacer, Freebiesbug, Creative Fabrica, Toools.design / 2 / 3, Evernote.Design, GFXTRA, XSGames, design.dev, UI STORE DESIGN, Pixelbuddha, squax, 𝖌𝖗𝖕𝖍𝖈 𝖉𝖘𝖌𝖓 𝖇𝖆𝖈𝖐𝖚𝖕, all 4 designer, GFXMountain, degreeless, CraftWork, Delightful Creative Tools

Digital Art Collections ​

The Last Museum, strauh.al, ⁠The Met, rijksstudio, Haltadefinizione, The Wolfman Museum of Art, DarkClassics, European Art, The Watercolour World, Museo, Arthur, WGA, Gallerix, WikiArt, Public Work, Public Domain Image Archive, V&A, Louvre, Artchive, S.D. Cason, Frick, RCT, Artic, Artvee, MoMA, Guggenheim, Deutsche Digitale, NGA, Semantic Art Search / GitHub, Gardner Museum, Centre Pompidou, NPG, Ashmolean, faenum

Digital Brushes ​

brushes_and_patterns, myphotoshopbrushes, brusheezy, tala, BrushBase, ⁠daBrushes, ⁠Digital Brushes

Dynamic DNS Services / Subdomains ​

DuckDNS, ClouDNS, FreeDNS / Warning, dynu, myaddr, nsupdate / GitHub

Subdomains Services ​

DigitalPlat / GitHub, is-a.dev, JS.ORG, TheDev, GetFreeDomain

EmulatorJS / NeptunJS ​

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These serve as frontends for the EmulatorJS + NeptunJS emulator APIs.

Free DNS Resolvers ​

Free VPN Configs ​

TIP

These servers are community sourced, do not use with sensitive data, or ideally just self-host them if you can.

Geometry Dash Demon Lists ​

Internet Archive Tools ​

Japanese Learning Sites ​

Kakugo, Marshall's Site, HeyJapan, Renshuu, GuideToJapanese, jpdb, NativShark, Donkuri, Tofugu, KanaDojo / GitHub, ⁠Lingual Ninja, ⁠Ten / Discord

YouTube Channels ​

Japanese Ammo with Misa, Comprehensible Japanese, JapanesePod101

Dictionaries / Translation ​

Jotoba, Tagaini, Takoboto, Jisho, Massif, Shirabe Jisho, Weblio, JS-Dict, rtk-search

Kanji Learning ​

  • Poricom - Kanji Character Identifier

KanjiDamage / KanjiDamagePlus, Koohii / Deck, Manji

LibGen Mirrors ​

LibGen Tools ​

Search Extension / Need Seeds / Backup

Manga Downloaders ​

Comics Downloader, work_crawler, HDoujinDownloader, FMD2, anime-dl

Manga Readers ​

AllMangasReader, Houdoku / GitHub, Adolla, OpenComic, Manga-Organizer, MangaOnlineViewer, LANraragi, Unyo

Self-Hosted ​

KavitaReader, Komga / GitHub / Discord, atsumeru

Media Database Site Tools ​

Trakt Tools ​

Apps / Recommendations / Universal Scrobble / List Import

Letterboxd Tools ​

Multi Tool / Extra Site Ratings / Shortcuts / Watchlist Picker / Watchlist Roulette / Collections / Celeb Accounts

MyAnimeList Tools ​

Profile Extension / Stats / Scripts / Stats / Badges / Search Helper / Hide Seen / Export / Site Sync / MALSync Discord / API / Tier Lists

AniList Tools ​

Multiple Tools / Extras / List Comparison / Migration / MPV Sync / Tier Lists

Multireddits ​

Piracy / 2 / 3 / 4, Random / 2, Streaming, Cord Free TV, Piracy Leaks, News, Tech, Left / 2, Mysteries, Aliens, Paranormal, Metaphysics, Minimalism, Countries / 2, International AskARedditor, Text Only, Chess, Engineering

Music Sheet Collections ​

General Music Sheets ​

Specific Music Sheets ​

PNG Images / Clipart ​

CleanPNG, PNGWing, Pikist, pngmart, pngall, pngplay, freepngimg, KindPNG, FreePNGLogos, PNGFind, PNGHut, openclipart, transparentpng, pngfind, ⁠PNGitem

Poll Sites ​

⁠BetterVoting / Info, ⁠RCV123, minipoll, StrawPoll, framadate, polltab, polling-app, poll.ly

Live Polling ​

slido, Feedbackr, Trypingo

Presentation Tools ​

Marp, ZoomIt, Presentator, Pitch, Zoho Show, Webslides, FreeShow, OpenLearning, Slideshare / Downloader, Excalideck, ⁠Bento

Presentation Templates ​

Showeet, Powerpoint Hub, Slides Carnival, PresentationGO, ThePOPP

Proxy Lists ​

Free-Proxy-List / Web Proxy, OpenProxyList, ProxyScrape, hide.my proxy list, ProxyNations, spys.one, cyber-gateway, geonode, freeproxyupdate, proxydocker, proxyhub, proxydb, advanced.name, monosans list, premiumproxy, Proxynova, ⁠GetFreeProxy / GitHub

Self-Hosted Wiki Alts ​

WikiDocs / GitHub, Media Wiki / GitHub, xWiki, DokuWiki / GitHub, Miraheze, wikmd, Fandom

Searx Instances ​

SMS Verification Sites ​

TemporaryNumber, TextNow, GetFreeSMSNUmber, Smser, Receive SMS Online, My Trash Mobile, temp-sms, temporary-phone-number, storytrain, Temp Number, receive-smss, receive-sms-free, quackr, smsnator, InboxSMS, anonymsms, receivesmsonline, jiemadi, 7sim, yunjiema, yunduanxin, free-sms-receive, receivefreesms, smspinverify, receivefreesms.net, smspool, receive-smss, ⁠eSIM Plus, receivesms, PVAPins, ⁠OnlineSim, ⁠ReceiveSMSFast, Receive-SMS, ⁠Verify SMS, ⁠TempSMSOnline, SMSReceiveFree, ⁠Sanalonay, ⁠Text Verification, ⁠Online Sim, ⁠FreePhone, ⁠FreeReceiveSMS, ⁠TempBoxPro, gettempnumber, ZUSMS, PVAcodes, Anosim, ⁠Receive SMS, ⁠Online Sim

SVG Icons ​

Google Icons, iconer, SimpleIcons, xIcons, Polaris, Phosphor Icons, iCongo, Lucide, Ant Design, Iconbuddy, Devicon, Magnific, Streamline, Icones / GitHub, awsicons, iconoir, heroicons, composeicons, iconmonstr, Nerd Fonts, websvg, svgsilh, pictogrammers, svgstack, iconshelf, tabler icons, FreeSVG, GriddyIcons, icons-for-free, Solar, Reicon

Tab Managers ​

Tab Stash, One Tab Group, TreeStyleTabs

TypeScript Tools ​

Udemy Coupons ​

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If you're in the US you should be able to access Udemy courses for free using your library and looking for "Gale Presents Udemy".

discudemy, BARONIP COUPONS, freebiesglobal, onlinecourses, UdemyKing, CourseArray, Udemy 24, UdemyFreeCourses, Study Bullet / Telegram, r/udemyfreebies, Online Courses Tracker, Real.Discount, OnlineTutorials, Scroll Coupons / Telegram, UdemyXpert / Telegram