Celest Alternatives

Manufacturers use Soff to grow revenue by auto-creating quotes and automating communication with customers & suppliers.

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Argon AI, Inc.

Project Management

Argon AI is a platform where biopharma and life sciences professionals can execute complex and data driven workflows using natural language. We help professionals get thorough answers to questions about clinical trials, existing treatments, healthcare landscape, and the competitive market in minutes rather than months. Prior to starting Argon, Samy was responsible for Flatiron Health’s (Roche) first data analytics project which eventually led to the start of the Flatiron Services business unit. There, he saw first-hand the heavily manual process that biopharma companies struggle through to get the insights they need to drive forward their drug development programs. He also helped close over $6M+ in ARR and is an expert in enterprise pharma sales. Cyrus previously led engineering teams and built 0 to 1 across pre-seed and unicorn startups, managed mission-critical trade generation systems at Bridgewater, and held AI advisory roles at various startups. Cyrus has a duel degree in EE and CS from USC. Breakthroughs in AI present an opportunity to reinvent biopharma and life science workflows to reduce the time and cost of bringing treatments to patients where delays in bringing a drug to market can cost a pharma company $3M / day.

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atopile

Project Management

atopile is a new language to design electronic circuit boards with code. We replace point and click graphical interfaces with code to bring software level automation and reuse to the field of hardware design. Our project is open source on GitHub! https://github.com/atopile/atopile

Spark is an AI-powered planning and workflow tool for large-scale clean energy developers that lets them break ground faster. With Spark, developers can search across thousands of PDFs, maps, and websites to identify requirements and screen locations in seconds, not weeks. Julia and Tae were previously engineering and product managers at Brex, Tesla, and Apple. They grew up within 10 minutes of each other in Brazil but met in the US through a shared passion for software and infrastructure for society.

Blacksmith helps companies run their continuous integration (CI) up to twice as fast, at half the cost. We do this by running their CI on high performance gaming CPUs. - Engineering productivity is often marred by slow CI that grows quadratically with the size of the engineering organization. - On top of this, companies pay high markups to run CI on the hyperscalers. - Consequently, companies have to run their CI on spot instances to keep costs in check. Since spot instances can get pre-empted at any point, running CI reliably on them requires [significant engineering investment](https://www.rippling.com/blog/how-rippling-used-spot-instances-to-save-and-scale-ci-cd). Blacksmith offers CI compute that is more performant, cheaper, and reliable. With Blacksmith, companies do not have to think about CI as they scale. We are starting with GitHub Actions - today's most popular and fastest-growing CI system. With a one-line change, companies can run their CI up to twice as fast on our high-performance hardware. In addition to this, Blacksmith provides colocated warm caches along with optimizations for common CI workloads (like building and pushing Docker images). Aayush, JP and Aditya have gained deep systems and product knowledge from their time at Cockroach Labs and Faire respectively. Both these companies, with several hundred engineers, were spending in the order of millions of dollars on their CI. Yet they were riddled with slow CI and actively seeking out cheaper and faster alternatives. Blacksmith offers exactly this alternative, at a time where being lean is table-stakes for most companies.

We build underwater data centers to cut power usage by up to 30%, operating GPUs cheaper and more sustainably. Our 1 MW capsule is being tested underwater in the SF Bay

Intercept lets CPG brands challenge incorrect charges from retail chains. It ingests all of a brand’s fees across their retailer portals and emails, flags the fees that can be disputed, and automates away the mundane tasks involved in fee disputes. What previously took a team of people is now manageable by a single person.

Abel transforms law firm document review workflows, eliminating the need to choose between depth and breadth. Attorneys use Abel to answer nuanced questions based on the context spread across thousands of documents.

Sample transforms healthcare operations from a burden into a competitive advantage. Our users build copilots in Sample to support processes like patient intake and reimbursement. These copilots don't just speed up work – they capture valuable ground-truth data that make our models smarter over time. We work with leading national providers, already have data from 76% of US oncology clinics, and our network is rapidly expanding across the nation.

The leading platform for building and managing AI voice agents that revolutionize contact center operations.

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ClaimSorted

Project Management

ClaimSorted helps insurance companies remove the hassle of managing claims by enabling them to outsource their claim operations to us. This service is known as a Third Party Administrator (TPA). Unlike traditional TPAs, we blend AI and best-in-class experts to deliver a 5-star customer experience, minimise mistakes and speed up claim assessment.

Tusk (YC W24) is an AI agent that helps developers generate unit and integration tests with codebase context. Tusk sits in CI and provides automatic coverage whenever software engineers raise a PR. Engineering teams use Tusk to prevent critical regressions while increasing test coverage.

We are Same (YC W24). We want to help people easy develop and run products. We believe that soon everyone will be able to freely explore, create, and implement various ideas without being restricted by technology and time. Coding in its current form is still too complicated for most people. It gives control to a small elite, takes years to master, and remains unintuitive and time-consuming to the average person. We spent the last two years building tools like Million.js and React Scan that extend what millions of developers could create. Now, we're going to share that magic with the rest of the world. We're based in San Francisco and Shanghai.

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Deepnight

Project Management

DeepNight is building the next generation of night vision with AI.

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Healia

Project Management

Healia is reinventing health insurance for dual income families. Our product enables companies to pay for the out of pocket costs of any employee that enrolls in their spouse's health insurance plan. This saves customers $10k per enrollee while providing an incredible employee perk: 100% coverage of a family's health costs. We’re now up to 50+ customers coast-to-coast with over 40k employees using our product!

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Marr Labs

Project Management

Marr Labs is making AI-voice agents that are indistinguishable from humans. Han and Dave previously created speech tech company Vlingo that powered the first Siri app and was acquired for $225M. Now they are taking voice to the next level by making AI-voice agents that can handle virtually any phone-based job, from answering calls to schedule appointments to call center sales and support jobs—all at a fraction of the cost of a human agent. In the US alone, businesses handle 17 billion calls a year at an average cost of $5 per call–an $85 billion addressable market.

We're building a Micro Visual Positioning System (VPS) that can be retrofit onto any drone that simulates a GPS. Our VPS uses cameras and an accelerometer/gyroscope as well as reference satellite imagery for positioning. The system is entirely self contained, can't be jammed and has no RF signature.

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ProhostAI

Project Management

ProhostAI is building an AI Property Manager for short-term rental hosts on Airbnb and other platforms. Our team consists of an ex-Airbnb Staff Data Scientist and Dropbox Sr Software Engineer who are also Superhosts with 9 properties worth $15M making $1.5M/yr.

Manaflow is building new interfaces and tools for the future of software engineering. We're the creators of cmux, a universal AI coding agent manager that supports Claude Code, Codex, Gemini CLI, Amp, Opencode, and other coding CLIs. cmux helps software engineers context switch between tasks, deploy coding agents safely in cloud sandboxes, and verify AI-written code through preview environments. You can use cmux like Jira, Asana, or GitHub Issues, writing a bunch of tickets like a todos list – except cmux will deploy AI coding agents of your choice to complete the tickets for you. For every task that you start, cmux will: - Start up dev environments that include VS Code + browser previews for any dev servers so you can visually verify and test live changes fast - Spin up cloud sandboxes to safely deploy AI coding agents in YOLO mode so they can move fast and NOT break things - Evaluate all of the code diffs for all of your selected AI coding agents when they finish their tasks and choose the best version for you The future of software engineering will be managing, verifying, and reviewing 10+ coding tasks done by AI agents simultaneously. Human software engineers will become software engineering managers with AI software engineering teams behind them. Manaflow is building these interfaces to enable engineers to become 10x more productive with AI. cmux is an open-source app, and you can also bring your own API keys or OpenAI and Claude Max subscriptions. You can download cmux at https://www.cmux.dev/.

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Lumenary

Project Management

Lumenary develops Solar, a tool to build full-stack apps alongside many LLMs on a canvas, where you can freely remix features and try design variants. We provide infra (auth, DBs, storage, servers), or you can integrate with your own. Deploy in a click. Lumenary was founded by four best friends who met at Dartmouth, with experience from Jane Street, IMC, and Palantir. They've published research in venues like NeurIPS, and have deployed software managing billions of dollars, petabytes of data, and a lot of LLM tokens.

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Revi

Project Management

Revi helps Investment Banks, PE firms, and Corporate Development teams source new deals. We do this by using agentic workflows to replicate their end-to-end deal origination process, entirely removing the trade-off between precision and scalability. We released the first version of Revi in September 2023 and now have companies like KPMG and platforms backed by KKR and Nordic Capital using our product.

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Roundabout Technologies

Project Management

Roundabout Technologies makes AI-powered traffic lights, allowing cities to reduce pedestrian deaths, improve traffic, and reduce resident complaints. Our founding team has experience building safety-critical embedded systems and AI at Waymo, Zoox, Google, and Verily.

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Crustdata

Project Management

Crustdata provides live company and people data via APIs and full dataset delivery. We make hard to get data easy to use at scale. We have developed technology that allows us to pipe in live data from over a dozen different data sources and deliver this data instantly to our customers. We serve use cases like: automatic pipeline building, pipeline prioritization, champion watching, company and people triggers for sales and marketing automation, investment deal sourcing Our goal is index all the important data on the web and deliver it to customers in an easy-to-use way.

Loombotic is automating wire harness manufacturing.