Top 100 YC Companies by

Rank out of all websites globally for traffic in the past 3 months. The rank is calculated using a proprietary methodology that combines a site's estimated average of daily unique visitors and its estimated number of pageviews over the past 3 months. Source: Alexa.

Chart Alexa Rank for All Companies Chart Alexa Rank vs. Other Metrics
Rank Name Batch Category Description Alexa Rank
1 Reddit S05 Entertainment The frontpage of the internet 18
2 Twitch W07 Entertainment Video game live streaming 31
3 Dropbox S07 Other SaaS Backup and share files in the cloud. 87
4 Scribd S06 Entertainment World's largest online library. 187
5 Genius S11 Entertainment Crowd-sourced explanations of song lyrics 231
6 Airbnb W09 Consumer Sharing economy. 343
7 Weebly W07 Other SaaS Web site editing platform. Over 40M people have launched their business on Weebly and every month 325M people visit a Weebly-made site, or 50% of the US. 357
8 9gag S12 Entertainment Make the world happier. 377
9 Humble Bundle W11 Entertainment Pay what you want for awesome games and other content while giving to charity. 583
10 Padlet W13 Other SaaS Easiest way to put stuff on the Internet 1,082
11 1000Memories S10 Consumer Memorial sites. 1,082
12 Disqus S07 Dev Tools Add comments to your website. 1,282
13 Coinbase S12 Blockchain Buy and sell digital currency 🚀 🌑 1,502
14 Coub S16 Entertainment Coub is YouTube for video loops. You can take any video from YouTube, Facebook or upload your own. Trim it to the best part, mix it with other videos or add a soundtrack 1,650
15 Creative Market W10 Dev Tools Marketplace for ready-to-use design assets from independent creators around the world. Acquired by Autodesk in February 2014. Spun out again in July 2017. 1,857
16 Font Awesome S15 Dev Tools Font Awesome makes it easy to add vector icons and social logos to your website. And Pro gives 1,000+ more icons and SVG framework! 1,950
17 GitLab W15 Dev Tools Git repository management, code reviews, issue tracking, issue boards, activity feeds, wikis and continuous integration. Community driven with more than 1000 contributors. 1,991
18 Codecademy S11 Education Codecademy teaches the world the skills they need to get the jobs they want. 2,218
19 Docker S10 Other SaaS App store for server configurations. 2,724
20 HackerRank S11 Other SaaS Programmer IQ 2,886
21 Songkick S07 Consumer Songkick is a ticketing vendor and online database of concerts for music enthusiasts. 3,136
22 Stripe S09 Fintech Online payments. 3,470
23 Teespring W13 Consumer Retail quality products on-demand. Teespring is a platform that enables anyone to create and sell unique apparel and items that people love, with no cost or risk. 3,485
24 Zapier S12 Other SaaS Zapier connects hundreds of SaaS apps with customizable workflows via an easy to use editor. 3,509
25 DoorDash S13 Consumer Restaurant delivery. 3,563
26 Lever S12 Other SaaS Lever is an Applicant Tracking System + Talent CRM. It effortlessly fits the hiring needs of companies today. 3,944
27 ClearTax S14 Fintech Intuit of India. 4,031
28 Product Hunt S14 Entertainment Hacker News for Products 4,421
29 The Muse W12 Other SaaS The Muse is the ultimate career destination offering exciting job opportunities, expert advice, and a peek behind the scenes into fantastic companies and career paths. 4,579
30 Clever S12 Education Developing applications for education is a data nightmare. Clever's APIs make building on top of student data easy for developers. 5,133
31 Instacart S12 Consumer Groceries delivered fast. 5,159
32 Wufoo W06 Other SaaS Online form builder. 5,388
33 Heroku W08 Other SaaS Heroku is a multi-language cloud application platform that enables developers to deploy, scale, and manage their applications. 5,716
34 OneSignal S11 Dev Tools OneSignal provides a simple interface to push notifications. OneSignal lets content creators focus on quality user engagement instead of complex implementation. Our goal is to democratize push communication for everyone. 6,950
35 Zeplin S15 Dev Tools Zeplin is the best way for UI designers & frontend developers to work together. We take design files and generate resources that developers need. 7,890
36 Webflow S13 Dev Tools Dynamic website builder. 8,658
37 SmartAsset S12 Fintech The easiest way to make and understand important personal finance decisions. 8,954
38 Repl.it W18 Dev Tools In 2 seconds, boot up an online programming environment for your favorite language. 9,673
39 Razorpay W15 Fintech A modern online payment gateway for India 9,846
40 PushBullet W14 Consumer Push things to your other things. 10,128
41 Meteor S11 Other SaaS We make Apollo, the leading GraphQL implementation. (We are also the team that built Meteor, the JavaScript framework.) 10,277
42 Strikingly W13 Other SaaS The easiest way to create a beautiful, mobile optimized website. 10,451
43 Bitnami W13 Other SaaS The App Store for Server Software 11,239
44 WorkFlowy S10 Other SaaS WorkFlowy is a better way to manage information. It provides a simple mechanism - zoomable, searchable, shareable bulleted lists - that has startling versatility and power. 11,618
45 Vote.org S16 Nonprofit Vote.org uses technology to simplify political engagement, increase voter turnout, and strengthen American democracy. 12,756
46 Caviar S11 Consumer Uber for food. 13,006
47 Gusto W12 Other SaaS Humans aren’t resources. Gusto reimagines payroll, benefits, and HR by automating the most complicated, impersonal business tasks and making them simple and delightful. Get three months free @ https://gusto.com/friends/y-combinator 13,032
48 HelloSign W11 Other SaaS The #1 eSignature Software for Small and Mid-Market Businesses. 13,307
49 GOAT W11 Consumer Sneaker Marketplace 13,365
50 Tech in Asia W15 Entertainment Tech in Asia is a media, events, and jobs platform for Asia’s tech communities. 14,369
51 BackerKit S12 Other SaaS BackerKit is crowdfunding software that helps project creators manage their 1000 biggest fans. 14,747
52 Submittable S12 Dev Tools Submittable is the best way for organizations to create, promote, and manage their calls for submissions, applications and other opportunities. 15,263
53 Thunkable W16 Other SaaS Wordpress / Wix / Squarespace for native mobile apps. Drag, drop and block it to invent your own beautiful app. 15,459
54 Paystack W16 Fintech Modern payments infrastructure for Africa 15,900
55 YourMechanic W12 Consumer Car Repairs, Reinvented: a. Mechanic comes to your home or work to fix your car b. Save 20-30% by working directly with mechanics instead of shops c. Total transparency and money back guarantee 16,678
56 Ninite W08 Other SaaS Simple third-party app patching and deployment for Windows. 16,739
57 MatterPort W12 Entertainment Turn physical objects and environments into 3D models in seconds. 17,916
58 Chatfuel W16 Dev Tools Platform to easily create chatbots to engage with audiences on messengers. 19,799
59 UpLabs W16 Dev Tools UpLabs is a place where designers & developers come to share, discover and interact with the resources they need to build sites and apps. 19,953
60 Cambly W14 Entertainment On-demand access to English tutors over video chat. 22,198
61 Expo S16 Other SaaS Expo brings together the best of web (development speed, fast iteration cycles, easy deploys, and automatic cross-platform support) and the performance and user experience of native apps. Let's talk if you're planning to build a mobile app. 23,270
62 Cratejoy S13 Other SaaS Cratejoy is the platform for subscriptions 23,722
63 PagerDuty S10 Dev Tools Notify you about server troubles. 23,931
64 ACLU W17 Nonprofit Defender of rights and liberties 23,948
65 Platzi W15 Education Live streaming classes on design, marketing and code. Learn from industry leaders. 24,084
66 Zenefits W13 Other SaaS HR for small businesses: onboarding, payroll and benefits. 24,960
67 Octopart W07 Industrial Octopart is a search engine for electronic components 25,146
68 RescueTime W08 Other SaaS RescueTime is a web-based time management tool that tracks the activities and duration of a users' computer usage. 25,209
69 WayUp W15 Marketplace for college students and recent graduates to find and apply for jobs and internships. 26,703
70 Hipmunk S10 Consumer Hipmunk takes the agony out of searching for flights, accommodations, cars, and more. 27,021
71 Mailgun W11 Dev Tools Email API service. 27,120
72 StatusPage S13 Dev Tools The best way to communicate with users around downtime. 27,181
73 Optimizely W10 Dev Tools A/B testing. 27,820
74 PadMapper S10 Real Estate Map-based apartment search. 28,571
75 Mixpanel S09 Other SaaS Mixpanel is the most advanced analytics platform in the world for mobile & web. 28,780
76 Front S14 Other SaaS Collaborative Inbox for Companies 28,912
77 NewsBlur S12 Entertainment NewsBlur is a personal news reader that brings people together to talk about the world. A new sound of an old instrument. 30,617
78 OpenAI S16 AI and ML OpenAI is a non-profit artificial intelligence (AI) research company. 31,038
79 Vidyard S11 Other SaaS YouTube for business. 31,099
80 Amplitude W12 Other SaaS Product Analytics 31,732
81 Poll Everywhere S08 Other SaaS Live audience feedback 33,295
82 Algolia W14 Dev Tools With 50 data centers in 15 regions, Algolia offers a developer-friendly and enterprise-grade search API. Designed to make every search interaction meaningful and rewarding, Algolia serves billions of queries weekly for more than 5,000 customers. 33,455
83 Sift Science S11 Other SaaS We help thousands of online businesses fight fraud (chargebacks, fake accounts, spam, account takeover, etc.) with real-time machine learning. 33,782
84 ReadMe W15 Dev Tools ReadMe provides every company the ability to quickly and easily create beautiful documentation, and build loyal and productive developer communities. 33,865
85 Fountain S15 Other SaaS The hiring automation platform built for speed and scale. 34,679
86 Women.com S14 Entertainment Quora/Cosmo for women 37,267
87 Segment S11 Other SaaS Segment is the analytics infrastructure that helps collect and organize data so businesses make better decisions. 38,499
88 Olark W09 Other SaaS The best live chat software on the planet. We help you build relationships with website visitors, boost sales, and make your customers love you. 39,375
89 Jumpcut S16 Education Online courses that feel like movies. 39,500
90 Close.io W11 Other SaaS Inside Sales CRM for SMBs 40,677
91 EasyPost S13 Other SaaS Shipping API 42,375
92 Soylent S12 Consumer Soylent is a simple, nutritious, and affordable food that possesses all the essential ingredients a body needs to be healthy. 42,417
93 Flexport W14 Other SaaS Flexport's mission is to make global trade easier for everybody. We are connecting humanity in a seamless web of global trade with our unique blend of software, human expertise, and physical infrastructure. 43,807
94 7cups S13 Healthcare 7 Cups is an emotional support service that matches up people that need support with active listeners and therapists. 44,582
95 Le Tote S13 Consumer Subscription service for women's apparel & accessories. 44,942
96 Streak S11 Other SaaS Streak transforms Gmail into a customizable CRM and process management tool. Our products service thousands of businesses, we’re growing fast, we’re profitable and we’re still a small team. 46,857
97 CoinBundle S16 Fintech The easiest way for new investors to build crypto portfolios. 46,898
98 Triplebyte S15 Other SaaS Intelligent technical hiring. 47,308
99 PlanGrid W12 Real Estate We build mobile applications for the construction industry 47,755
100 Joy S16 Consumer Joy is a tool that helps couples plan their wedding from engagement to honeymoon and everything in between. 48,323