Developer Tools Startups

Etherspot provides account abstraction infrastructure based on the ERC-4337 and ERC-7579 standards, including SDKs, a React library (TransactionKit), multi-chain data APIs, an open-source paymaster for gasless transactions, and a bundler (Skandha). It targets Web3 developers building dApps who want to improve user experience across EVM chains.

2 investors

Evidence is a browser-based IDE for building interactive data dashboards and reports using SQL and markdown, with AI-powered development tools and support for multiple database backends. The platform targets data analysts and developers who need to create publication-quality visualizations and share data products with enterprise-grade security and performance.

2 investors

Evidently is an open-source library for monitoring machine learning models in production, offering 100+ built-in metrics for data quality, model drift detection, and performance tracking. It serves ML teams and data scientists across enterprises and startups who need to monitor models throughout the ML lifecycle.

2 investors

Exceeds provides an agent intelligence layer that tracks and attributes AI-generated prompts to merged pull requests across the software development lifecycle, measuring token efficiency and return metrics for engineering teams.

2 investors

Libra is an AI-driven observability and incident response platform that automatically monitors logs, traces, and deployments to detect production issues, identify root causes, and either fix bugs directly or open pull requests for engineering teams to review.

2 investors

ExLattice develops real-time simulation software for metal additive manufacturing that predicts distortions and printing issues within minutes. The software serves AM designers and engineers to accelerate their workflow and optimize part designs before production.

2 investors

Expanse predicts the GPU, memory, runtime, and failure risk of compute jobs before they run, so clusters do more work on the same hardware and reduce failed or overprovisioned jobs. It works alongside existing schedulers such as SLURM, Kubernetes, or Nomad, serving engineers running training, HPC simulations, and inference workloads.

2 investors

Fastino is an applied research lab developing specialized small language models and APIs for structured data extraction, classification, reasoning, and production AI workflows. Its models include PII detection, guardrail classification for prompt injection and unsafe content, and open-vocabulary entity extraction used in production AI systems.

2 investors

Fermah builds Kernel, a protocol agency engine that enables smart contracts and protocols to autonomously execute conditional workflows, resolve markets, and orchestrate multi-step actions on-chain without human intervention. The platform serves blockchain protocols and decentralized applications across crypto infrastructure.

2 investors

Fidel API provides a card-linking platform that connects to users' payment cards, captures purchases in real time, and triggers event-based rewards experiences. Its products include a Select Transactions API for real-time payment events with location data and Offers as a Service for managing and monetizing rewards programs, aimed at developers and brands building loyalty and rewards features.

2 investors

Fig develops autocomplete software, visual applications, and keyboard shortcuts for terminal interfaces, designed to make command-line tools more usable for both novice and experienced developers.

2 investors

Filebase provides S3-compatible object storage with high-speed uploads and downloads, free egress, and a verifiable fingerprint for every object. It targets developers building and scaling applications, offering storage priced at $15/TB and support for IPFS and existing AWS CLI workflows.

2 investors

FileForge is Momentum CE's end-to-end document digitization service that scans paper records on-site, applies OCR processing, and delivers organized digital files ready for enterprise use. The service serves organizations with large paper archives including healthcare providers, government agencies, and legal firms who need searchable, compliant digital records.

2 investors

Filestack provides APIs and UI integrations for uploading, transforming, and delivering files and images. It serves developers and app creators who need to manage file operations at scale across web and mobile platforms.

2 investors

Fiveonefour builds tooling focused on agent experience (AX), helping developers ship software that AI agents can use effectively. It targets software teams building products where AI agents act as end users.

2 investors

Flamingo builds an open, AI-powered platform for managed service providers (MSPs) to deliver IT services using open tools and automation, aiming to replace closed, bloated vendor tools. It targets MSPs serving small businesses.

2 investors

Flarion offers a native execution engine, built in Rust on Apache Arrow and DataFusion, that runs as an in-process plugin to accelerate Spark, Ray Data, and Trino workloads through vectorized execution. It targets enterprise data engineering and agentic AI workflows, working across deployments such as EMR, Dataproc, Databricks, and Spark on Kubernetes.

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 provides real-time collaborative code editing within native text editors, allowing multiple developers to work on the same codebase simultaneously. The service caters to developers who want to pair program or collaborate remotely on coding projects.

2 investors

Flowdash was a software platform that enabled users to build custom applications and automate business processes without coding. The company served enterprises across fintech, healthcare, and HR sectors before being acquired by Notion in 2022.

2 investors

Flox provides tooling to manage software and its dependencies down to individual packages, including SBOMs and provenance, with reproducible environments that work across the software lifecycle. It serves platform engineers, developers, and AI agents, offering shareable environments via Git or FloxHub, CI/CD integration, and native support for AI assistants through MCP.

2 investors

Fluent.ai builds embedded, offline speech recognition software that uses a proprietary speech-to-intent technology to map spoken commands directly to actions without cloud-based transcription. It sells to consumer device OEMs, offering multilingual, noise-robust voice user interfaces for edge devices.

2 investors

Flux is a code-first analytics platform that derives engineering insights directly from commits, pull requests, and GitHub repository activity rather than tickets or reported status. It is built for engineering leaders to track system-level progress, risk, and team dynamics during AI-accelerated software development.

2 investors

Mayhem provides AI-powered fuzzing and symbolic execution tools for vulnerability discovery and API testing, designed to reduce noise in software supply chain assessments for development teams.

2 investors