Developer Tools Startups

Clarus provides AI-powered workflow agents for private market allocators, automating underwriting and reporting for fund commitments, direct deals, and secondary transactions. The platform unifies data from multiple sources—capital accounts, fund reports, financial statements—into a single auditable system that traces every extracted number to its source.

2 investors

Flarion provides performance-optimization technology for distributed data-processing engines such as Spark, Hadoop, and Ray, using tools like Polars and Apache Arrow to improve speed and memory efficiency. It targets data engineering teams looking to lower processing costs and boost throughput via plug-and-play integration.

2 investors

Flexprice is a developer-first, API-led usage-based billing platform for AI companies, handling metering, pricing, invoicing, and revenue reporting for models based on tokens, agent calls, GPU seconds, credits, and hybrid contracts. It provides APIs and SDKs for engineering teams, pricing tools for product teams, and line-item revenue reporting for finance teams.

2 investors

Floobits offers real-time collaborative code editing that works with native text editors in the browser, letting developers pair program remotely. It operates on a freemium model, with free accounts limited to public workspaces and paid plans for private collaboration.

2 investors

Flow builds products aimed at improving the web browsing experience, with a focus on helping users stay organized and intentful online.

2 investors

Flowise is a drag-and-drop platform for building and deploying AI applications and agents using large language models without coding. It provides modular building blocks, multi-agent orchestration, and support for deployment at scale across cloud and on-premises environments.

2 investors

Flowscope deploys AI agents that learn how businesses operate and automate work on top of existing systems within days. The company operates as a services firm delivering production-ready agents rather than recommendations.

2 investors

Fluid provides infrastructure automation, dynamic workload management, and integrated networking to simplify cloud-scale deployments, enabling automated provisioning, management, and scaling across distributed data and applications.

2 investors

FlyMy.AI enables developers to program AI workflows in plain text and deploy versioned, hosted APIs within minutes. The platform supports multiple models, 1000+ connectors, and custom GPU resources, serving teams building AI-powered applications.

2 investors

Font Awesome provides a library of icons and social logos that developers can add to a website with a single line of code. It serves web developers and designers as a toolkit in the developer tools category.

2 investors

Fortemedia develops embedded voice processing software that suppresses background noise and enhances speech clarity for Windows-based devices, primarily laptops and tablets. The company uses microphone array processing and deep learning to deliver voice communications and acoustic control features even in noisy environments.

2 investors

FortyFive builds a cloud-based platform and developer tools for hosting, sharing, and streaming simulated robotics environments, plus a virtual-to-real pipeline that turns symbolic simulations into photorealistic training data. It serves robotics and AI research teams and frontier labs working on simulation-based data engineering and model training.

2 investors

Foundational provides cross-platform data lineage generated automatically by analyzing the source code that defines data pipelines, transformations, and analytics across SQL, Python, and Scala frameworks like dbt, Spark, and Airflow. It serves engineering and data governance teams, mapping field-level data flow from source applications through pipelines to BI tools without accessing underlying data or PII.

2 investors

Foundries.io develops a cloud-native DevSecOps platform for IoT and edge embedded devices, enabling OEMs to secure, configure, and update connected hardware across industries. The company provides open-source Linux distributions, firmware, and lifetime software maintenance for IoT/Edge products.

2 investors

Framebase provides an API that lets developers add video functionality to applications by treating videos as programmable objects, handling transcoding, device compatibility, and CDN delivery. It targets software developers building video features into their applications.

2 investors

Freename is a Web3 domain platform where users can register, tokenize, and manage blockchain-based domains and top-level domains, with tools including Web3 emails, a website builder, DNS, domain resolution, and payment features. It offers APIs for resellers and developers, plus tokenization of traditional Web2 domains.

2 investors

Freestyle provides Linux virtual machines that provision in milliseconds with integrated version control, designed for running distributed agents at scale. The platform offers full KVM support, real root access, and nested virtualization capabilities for agent-based workloads.

2 investors

Fritz AI is a developer platform that provides machine learning tools and pre-trained models for integrating AI into mobile applications. The company serves app developers of all skill levels with SDKs, APIs, custom model training, and analytics to simplify AI deployment.

2 investors

Frontier AI helps clients implement practical artificial intelligence and strategic innovation to create lasting business value, leveraging expertise in AI design and systems thinking across multiple industries.

2 investors

Frugal Code connects source, cloud, and observability data to attribute cloud and AI spend to the specific code responsible, identify inefficient usage, and generate merge-ready pull requests that reduce costs. It is aimed at software development teams and integrates with tools like GitHub, Cursor, Claude Code, AWS, and Google Cloud.

2 investors

Fullstack Academy is an immersive coding bootcamp that teaches web development through a JavaScript-based curriculum covering technologies such as Node.js, React, and MongoDB. It trains students to become software developers and was acquired by Zovio (NASDAQ: ZVO).

2 investors

Fume is an AI-powered testing platform that automatically generates and maintains Playwright test suites by analyzing product videos and application usage. The service replaces manual test writing and maintenance for development teams, offering self-healing tests and cloud-based execution integrated into CI/CD pipelines.

2 investors

functionSPACE offers a programmable financial primitive that lets product builders design custom payoff structures and take exposure to numerical events, rather than using preset derivative shapes. It supports building prediction markets, structured derivatives, trading games, and research tools on a single liquid market.

2 investors

Fuse offers a single integration that connects companies to multiple financial data aggregators and automatically routes each bank connection to the most reliable and best-converting aggregator. It provides a unified data model and backward-compatible endpoints for businesses that need customers to link financial accounts.

2 investors