VSSL JAVA

What it does

A premium, portable, ultra-durable hand grinder designed for caffeine-fueled outdoor enthusiasts.

• 
  Ode Brew Grinder2019 · kickstarter.com · ▲79

  Powerful+precise next-gen home grinder with café performance

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  Brew Great CoffeeDec 2025 · brewgreat.coffee · ▲142

  Hi HN! I've been deep in the specialty coffee rabbit hole for a few years and built this tool to help me dial in espresso and pourover more systematically. *What it does:* • Extraction Compass – click where your shot lands (sour/bitter × weak/strong), get diagnosis and adjustments. It factors in your bean's origin, processing method, roast level, and variety. • Pourover recipes from Hoffmann, Rao, Hedrick, Kasuya (4:6) with step-by-step timer. Water amounts auto-calculate based on your dose. • Interactive WCR Flavor Wheel based on the World Coffee Research Sensory Lexicon 2.0.…

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  Handground Coffee Grinder2015 · handground.com · ▲72

  Precision Coffee Grinder: Better Grind, More Flavor

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  Brewseful2014 · acompio.co.uk · ▲81

  A simple timer app for brewing coffee

• 
  Monthly Java2016 · ▲71

  Supporting local roasters one box at a time

• 
  The Oomph2015 · kickstarter.com · ▲123

  The worlds fastest hand powered portable coffee maker.

• 
  SimCity, but with Permits▲892

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 1d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 13d ago · tanzaniaeducationproject.org

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  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 14d ago · bigwords.page

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  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 8d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 12d ago · carrierexplode.com

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  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 22d ago · space.bl2.net

• 
  Synthesia▲943

  Generate professional-looking AI videos from text in minutes

  AI · 2020 · synthesia.io

• 
  IdeasAI▲801

  OpenAI-powered startup idea generator

  AI · 2020 · ideasai.com

• 
  Tables by Google▲783

  Tables helps teams easily track & automate tasks

  Work · 2020 · tables.area120.google.com

• LS
  Linux sysadmin course, eight years on▲780

  Almost eight years ago I launched an online “Linux sysadmin course for newbies” here at HN. It was a side-project that went well, but never generated enough money to allow me to fully commit to leaving the Day Job. After surviving the Big C, and getting made redundant I thought I might improve and relaunch it commercially – but my doctors are a pessimistic bunch, so it looked like I didn’t have the time. Instead, I rejigged/relaunched it via a Reddit forum this February as free and open - and have now gathered a team of helpers to ensure that it keeps going each month even after I can’t…

  Commerce · 2020

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  Poolside FM for iPhone▲642

  A pool party in your pocket

  Life & fun · 2020 · cellular.poolside.fm

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  MakeHub 2.0▲600

  65 solo founders making $370,000/mo

  Life & fun · 2020