HackerRank Alternatives

Doublezero is a platform that provides developers with everything they need to build, operate, and monetize autonomous agents. Developers can focus on creating tools while Doublezero handles reasoning frameworks, state management, analytics, monetization, and a runner UI. Users can interact with agents through a powerful UI that allows play, pause, rewind, and human intervention, and discover or share agents and tools through an integrated marketplace.

Maitai makes building reliable AI applications easy. We autocorrect faulty model output in real-time and automatically fine-tune models that learn from their mistakes. This means our customers get more reliable results immediately, and over time, they gain custom models built specifically for their application that only get better and faster. You wouldn’t hire an employee who doesn’t learn from their mistakes, so why use a model that doesn’t? Maitai is here to deliver the next generation of reliable AI inference.

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vly.ai

Developer Tools

vly.ai is automating the full-stack developer, enabling you to build complex full-stack web apps without writing any code. We outperform Lovable, replit, and bolt in making sites that actually work.

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OneGrep

Developer Tools

OneGrep is a DevOps Agent that helps engineers automate manual devops tasks. It works across integrations that teams have to search, correlate, and operate automated tasks like runbook automation during incidents. OneGrep specializes across devops tools to help teams release code faster and more reliably so that engineers can spend more time building rather than being trained in bespoke tools like Observability, Ci/Cd, or Infra. Achintya and Brian are technical co-founders who have deep domain expertise in building and operating systems at scale at Coinbase, Disney, and Amazon. Achintya led the Search Team at Disney enabling DisneyPlus to scale to 70M users in two weeks. Brian was a founding engineer on the team that built the Incident Management Platform at Amazon that helps 30k DAUs in Amazon resolve critical incidents every day. https://www.onegrep.dev

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Unsloth AI

Developer Tools

Unsloth helps builders create custom models better & faster using RL and custom kernels. We're developing the all in one solution to help you create highly-accurate custom models 30x faster with 90% less memory use. With over 10 million monthly model downloads and 40K GitHub stars, our mission is to make training and open-source the best it can be!

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Relari

Developer Tools

Relari is building the infrastructure for trustworthy AI agents in the Software 3.0 era. We’re the company behind Nuvi.dev, a natural language agent builder that turns plain-English specifications into intelligent, verifiable agents, as well as the open-source frameworks Agent Contract and continuous-eval, which ensure AI systems behave as intended.

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HumanLayer

Developer Tools

CodeLayer is an OSS IDE for managing coding agents, built with proven workflows to solve hard problems in complex codebases.

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CodeViz

Developer Tools

CodeViz creates interactive codebase maps to help engineers quickly understand and navigate code. Adopted by engineers at Amazon, Microsoft, and Roblox, CodeViz was founded by two ex-Tesla engineers to tackle the 75% of development time lost to reading code. Download today at https://codeviz.ai

Rescale is a cloud-based platform for computational engineering and R&D, that empowers engineers and researchers to accelerate discovery, testing, and optimization. We democratize access to the latest technologies that drive greater efficiency and competitiveness, including high performance computing, simulation, modeling, AI/ML, and digital twins. The majority of industry leaders worldwide use Rescale as the backbone of R&D, connecting the digital thread of new product innovation to develop products that enrich humanity, from autonomous vehicles to drug discovery. Rescale customers include 7 of the top 10 automotive companies and 3 of the top 6 life science companies. Rescale’s full-stack, open platform automates systems, data, and workflows into a user-centric experience, so customers can focus on innovation. Choose from 1000+ pre-installed applications for multiphysics simulation and AI/ML-assisted design exploration, including commercial, open-source, and custom software. We offer the largest global network of hyperscale and specialty cloud infrastructure to leverage the latest CPU, GPU, and other specialized architectures. Rescale is enterprise-ready to enable any size organization to achieve their digital transformation goals–with unified management that gives IT teams full visibility and control of hybrid-cloud operations. Rescale’s intelligent automation gives customers flexibility to improve performance and reduce costs of computing, while our enhanced security and compliance ensures industry-leading standards are met from end to end. Getting started is simple, flexible, and free to try. Our team of experts is ready to help you achieve your most ambitious engineering goals – schedule a demo today. Join us and help us build products that change the world: www.rescale.com/careers

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Marft

Developer Tools

Marft creates embeddable machine learning models for application developers. Users submit data by web/API, and receive optimized models implemented in a language of their choice.

Since graduating from YC, Amplitude (W12) has made it to IPO and beyond by helping cutting edge startups become category leaders. We’ve pioneered the digital analytics category to become the go-to solution for AI pioneers (Cruise, Midjourney), apps that touch millions of consumers (Doordash, Coinbase), and the best in B2B (Atlassian, Rippling, Canva). With product analytics, experiment, CDP, session replay, and more, Amplitude’s digital analytics platform shows you what your users love, where they’re getting stuck, and what keeps them coming back. You want to build a generational business, and we have the capabilities and pricing plans to guide you every step of the way. Check out our special deal for YC companies and get started on your analytics journey.

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Brace

Developer Tools

Brace is the new way to host your website. We believe that website hosting shouldn't be complicated. With Brace, updating your website is as simple as saving files in Dropbox. Brace gives you two versions of your website, a Draft version and a Production version. The Draft is for iteration and collaboration. The Production version is optimized for performance and scale.

Swiftype is an Elastic company. https://blog.swiftype.com/2017/11/09/swiftype-joins-forces-with-elastic/ Swiftype App Search is now generally available. https://blog.swiftype.com/2018/05/16/app-search-now-generally-available/ Swiftype’s industry leading search platform delivers accurate, relevant and customizable search results for businesses. Swiftype’s suite of products, Site Search, App Search and Enterprise Search, have revolutionized the way people find information across their organization and on public facing websites.

Sysadmin as a service. We make deploying, configuring, monitoring,…

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Clutch

Developer Tools

Clutch.io builds tools for mobile application developers. Clutch's line of tools helps developers overcome some common problems with mobile app development including A/B testing for mobile apps as well as a framework that enables developers to iterate much faster.

Apollo GraphQL is the leader in open source and commercial GraphQL technologies. Apollo’s open-source GraphQL client, server, and gateway are downloaded more than 17M times per month and used in production by over 30% of the Fortune 500. Customers like Walmart, Expedia, Glassdoor, Audi, and PayPal, use the Apollo Graph Platform to unify their GraphQL efforts, collaborate on graph development, and safely iterate on their graphs. Based in San Francisco, Apollo is backed by Insight Partners, Andreessen Horowitz, Matrix Partners, Trinity Ventures, Y Combinator and individual investors.

OneSignal is the leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. Our easy-to-use interface empowers content creators to focus on quality user engagement instead of complex implementation. Our powerful platform enables over a million businesses to deliver 10 billion messages daily and 1 in 7 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Upwork, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.