Developer Tools Startups

Faraway provides infrastructure that lets game developers integrate a web3 open economy into their games, handling smart contracts, embedded wallets, and multi-chain indexing. It targets game studios and developers building blockchain-based in-game economies.

1 investor

FastAPI Cloud is a CLI-first platform for building, deploying, and running FastAPI (Python) APIs with a single command, supporting pyproject.toml, uv.lock, and requirements.txt. It offers autoscaling, scale-to-zero, HTTPS by default, custom domains, environment variable management, database connections, and built-in monitoring for developers and AI coding agents.

1 investor

Fastgen provides a drag-and-drop platform for building custom APIs and data workflows, with an integrated PostgreSQL database that handles data operations for applications.

1 investor

FastJVM develops a faster Java Virtual Machine (JVM) that outperforms existing implementations like HotSpot and GraalVM on certain workloads. The company focuses on JVM optimization and compilation technologies for developers building Java applications.

1 investor

Fastshot is an AI-powered, no-code mobile app builder that generates production-grade React Native code from plain language descriptions. It serves individual developers and small teams building mobile applications.

1 investor

Fathym builds an independent, git-backed context layer that installs into AI coding agents (Claude, Codex, Cursor, Cline, Aider) so a developer's or company's accumulated context and knowledge is captured, owned, and versioned rather than locked into a vendor's model. Its products fAI (a personal context workbench) and OpenX (connecting team data to AI) target individual developers and organizations wanting to own and govern the intelligence their work produces.

1 investor

FaunaDB is a strongly consistent OLTP database with a hybrid document-relational data model, accessible via a NoSQL query language. The open-source project originated from Fauna Inc.'s database-as-a-service offering.

1 investor

Featureflow is a feature flag management platform that lets teams gradually roll out, target, and toggle software features across environments without redeploying code. It serves both engineering and product teams with release pipelines, A/B testing, approval gates, a REST API, and integrations with CI/CD tools and AI coding assistants.

1 investor

Featureform is a feature store platform that lets machine learning teams define features as code and turn them into production data pipelines for model training and real-time inference. It orchestrates computation across offline data systems like Snowflake, Databricks, Spark, and Postgres while using Redis for low-latency online feature serving, with governance, version control, and multi-tenancy for ML teams.

1 investor

PeekFlow is a real-time collaboration platform that overlays interactive comments, reactions, and polls onto any webpage or application, enabling distributed teams and educators to provide visual feedback without switching tools.

1 investor

Federacy provides manual penetration testing services for startups and enterprises to identify vulnerabilities in web and mobile applications, APIs, and network infrastructure. The service satisfies SOC2, ISO 27001, HIPAA, and vendor security assessment requirements.

1 investor

Carl Lippert is an entrepreneur and developer who writes about technology, agriculture, and entrepreneurship. He operates Grass Ridge R&D (technology services for agriculture), Land Map Magic (land mapping tools for applications), and Leaf (an agricultural machine data API platform).

1 investor

BrowserOS is an open-source browser with built-in AI agents that automate web tasks through natural language commands without coding, prioritizing privacy and running locally. It supports multiple AI providers and operates across macOS, Windows, and Linux.

1 investor

Aether provides roofing and exterior building measurement reports for home services contractors, using phone-based 3D modeling to generate accurate full-house measurements within 2% accuracy. The platform enables contractors to create install-ready measurement reports and 3D exterior models for estimating and documentation.

1 investor

Felt provides clinical infrastructure for product and engineering teams to embed regulated healthcare services into applications through an SDK, licensed clinical network, and compliance contracts. The platform eliminates the need for teams to separately rebuild healthcare compliance, licensing, and clinical operations.

1 investor

Feyn provides a system for organizations to own and fine-tune their own AI models using their proprietary data and expertise rather than relying on third-party models. The platform is designed for enterprises seeking to build customized, continuously improving machine learning systems aligned with their specific knowledge and priorities.

1 investor

Fianu provides an automated governance platform that collects evidence and enforces policies throughout a software delivery pipeline to accelerate regulatory compliance without slowing release cycles. The platform integrates with existing development toolchains to generate attestations for compliance audits in regulated software environments.

1 investor

Fiberplane is an agent lab building developer tools for software work in the age of AI agents, including local-first, agent-native issue tracking for Claude Code, AI-powered code review that runs from the terminal or desktop, and a tool that binds specs to code to detect documentation drift. Its products target software developers and engineering teams.

1 investor

Fibery is a no-code work management platform that replaces multiple disconnected tools by combining databases, documents, whiteboards, automations, and integrations in one workspace. It serves teams across various industries and company sizes, from startups to enterprises, enabling product management, software development, marketing, sales, HR, and customer support functions.

1 investor

Fibery is a no-code work management platform that combines databases, documents, whiteboards, automations, and integrations so teams can plan, write, and analyze in one workspace. It serves companies of all sizes across industries—from B2B SaaS to hardware manufacturers and agencies—supporting use cases like product management, software development, HR, sales, and customer support.

1 investor

Fid Labs develops robotics software tools that simplify embedded software development workflows for building robots, industrial systems, aerospace applications, and autonomous vehicles. The platform targets hardware companies and enables developers to create next-generation robotics and autonomous systems.

1 investor

FifthTry offers a documentation platform that integrates with GitHub and prevents code deployments until documentation is updated and approved, targeting development teams managing code repositories.

1 investor

Fig provides Security Operations Resilience software that detects and repairs "drift" — unplanned upstream changes that break SOC detection rules and automations — and lets teams model and deploy planned SecOps changes with version control and rollbacks. It serves security operations teams managing detection and response infrastructure.

1 investor

Figaro provides audio intelligence APIs for developers, offering modules for music search by reference audio or natural language, similarity-based track grouping, automatic genre/vocal/language tagging, and artist soundalike/deepfake detection. It serves B2B music libraries and consumer music apps.

1 investor