Best of YC S21

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#1 Launch HN: Heimdal (YC S21) – Carbon neutral cement

617 points | 220 comments | Aug 02, 2021 | by marcuslima

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#2 Launch HN: Slip (YC S21) – Build and sell interactive programming courses

399 points | 108 comments | Aug 11, 2021 | by CoffeePython

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#3 Launch HN: BlackOakTV (YC S21) – Netflix for black people

377 points | 741 comments | Aug 06, 2021 | by Uzo0312

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#4 Launch HN: Hotswap (YC S21) – Easily migrate customers away from competitors

345 points | 152 comments | Aug 27, 2021 | by memset

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#5 Launch HN: Buoyant (YC S21) – Blimp drones for air freight

302 points | 173 comments | Aug 23, 2021 | by joefigura

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#6 Launch HN: Govly (YC S21) – Making it easier to sell to the U.S. government

274 points | 112 comments | Aug 18, 2021 | by mikeweiland

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#7 Launch HN: Evidence (YC S21) – Web framework for data analysts

263 points | 91 comments | Aug 25, 2021 | by amcaskill

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#8 Launch HN: Enso (YC S21) – Visual programming and workflow automation tool

205 points | 54 comments | Jul 06, 2021 | by wdanilo

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#9 Launch HN: Atmana (YC S21) – An app to help cut down on compulsive porn usage

202 points | 182 comments | Jul 27, 2021 | by zero_billion

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#10 Launch HN: InstaKin (YC S21) - Help immigrants to manage tasks in home countries

202 points | 69 comments | Jul 26, 2021 | by yshirazi

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#11 Launch HN: Turion Space (YC S21) – Space debris removal and satellite servicing

200 points | 112 comments | Aug 04, 2021 | by rwesterdahl

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Don't miss when the next Dropbox or Stripe launches

#12 Launch HN: Flow Club (YC S21) – Virtual co-working space for focused work

184 points | 75 comments | Aug 18, 2021 | by rickyyean

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#13 Launch HN: Inflow (YC S21) – Self-help app for people with ADHD

183 points | 324 comments | Oct 15, 2021 | by sebisaacsinflow

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#14 Launch HN: Bedrock AI (YC S21) – Using ML to identify red flags in SEC filings

183 points | 107 comments | Jul 20, 2021 | by kbennatti

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#15 Launch HN: Senpai.gg (YC S21) – Personal gaming coach for PC gamers

182 points | 207 comments | Aug 11, 2021 | by berkozer

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#16 Launch HN: SigmaOS (YC S21) – A MacOS web browser designed for faster work

161 points | 324 comments | Aug 16, 2021 | by MahyadGhassemi

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#17 Launch HN: Hedgehog (YC S21) – Cryptocurrency Portfolio Manager

158 points | 137 comments | Jun 18, 2021 | by cadillion

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#18 Launch HN: Epsilon3 (YC S21) – Software for spacecraft and complex operations

149 points | 62 comments | Jul 21, 2021 | by llcrabtree

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#19 Launch HN: Hypercontext (YC S21) – Meeting notes, actions, and OKRs in one app

145 points | 60 comments | Jul 19, 2021 | by brennanm

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#20 Launch HN: hotglue (YC S21) – Easy user-facing SaaS integrations

144 points | 61 comments | Jul 22, 2021 | by hsyyid

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#21 Launch HN: Abbot (YC S21) – ChatOps as a Service, inspired by GitHub's Hubot

143 points | 36 comments | Jul 27, 2021 | by icey

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#22 Launch YC S21: Meet the Batch, Thread #4

130 points | 161 comments | Aug 05, 2021 | by dang

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#23 Launch HN: Litnerd (YC S21) – Teaching kids to read with the help of live actors

127 points | 91 comments | Aug 25, 2021 | by Anisa_Mirza

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#24 Launch HN: SafeBeat Rx (YC S21)- At-home ECG software to replace hospitalization

124 points | 69 comments | Aug 24, 2021 | by rnavara

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#25 Launch HN: MergeQueue (YC S21) – Automate rebasing and merging for your codebase

122 points | 57 comments | Jul 16, 2021 | by spriha

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#26 Launch YC S21: Meet the Batch, Thread #5

116 points | 121 comments | Aug 10, 2021 | by dang

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#27 Launch HN: Hera (YC S21) – macOS app to prepare, join and take notes in meetings

116 points | 115 comments | Jul 08, 2021 | by brunovegreville

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#28 Launch HN: Onfolk (YC S21) – Modern HR and Payroll in One Place (For the UK)

113 points | 34 comments | Jul 14, 2021 | by 4thstreet

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#29 Launch HN: Pabio (YC S21) – Interior design and furniture rental as a service

112 points | 103 comments | Jul 09, 2021 | by anandchowdhary

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#30 Launch HN: Awesomic (YC S21) – Get design tasks done with 24-hour turnaround

111 points | 57 comments | Aug 16, 2021 | by Pavlyshyna

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#31 Launch HN: Evidently AI (YC S21) – Track and Debug ML Models in Production

111 points | 17 comments | Jul 07, 2021 | by elenasamuylova

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#32 Launch YC S21: Meet the Batch, Thread #6

104 points | 72 comments | Aug 12, 2021 | by dang

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#33 Launch HN: Revery.AI (YC S21) Scalable deep learning-based virtual dressing room

103 points | 62 comments | Jun 14, 2021 | by mchong6

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#34 Launch HN: Lemonade Finance (YC S21) – Digital Bank for the African Diaspora

98 points | 66 comments | Aug 27, 2021 | by ridwan_olalere1

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#35 Launch YC S21: Meet the Batch, Thread #8

97 points | 145 comments | Aug 19, 2021 | by dang

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#36 Launch HN: Secoda (YC S21) – Searchable Company Data

97 points | 29 comments | Oct 29, 2021 | by Etai

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#37 Launch HN: Café (YC S21) – Find the best days to go to the office

95 points | 62 comments | Jul 13, 2021 | by TomNguy

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#38 Launch HN: Matrubials (YC S21) Milk-derived therapeutics for infectious diseases

94 points | 36 comments | Jul 30, 2021 | by ishishah

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#39 Launch HN: Iona Mind (YC S21) – App-based cognitive behavioural therapy

92 points | 58 comments | Aug 13, 2021 | by phowson83

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#40 Launch YC S21: Meet the Batch, Thread #7

91 points | 135 comments | Aug 17, 2021 | by dang

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#41 Launch HN: Payflow (YC S21) – Allow workers to access their wages instantly

88 points | 93 comments | Jul 22, 2021 | by asukhwani

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#42 Launch HN: Lightly (YC S21): Label only the data which improves your ML model

88 points | 25 comments | Aug 09, 2021 | by isusmelj

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#43 Launch HN: Arengu (YC S21) – Frictionless Signup Flows

84 points | 36 comments | Aug 06, 2021 | by jacobovidal

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#44 Launch HN: Ancana (YC S21) – Fractional ownership of vacation homes

83 points | 153 comments | Aug 20, 2021 | by rblack44

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#45 Launch HN: ContainIQ (YC S21) – Kubernetes Native Monitoring with eBPF

79 points | 20 comments | Jan 06, 2022 | by NWMatherson

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