Developer Tools Startups

FINE is a branding and web design firm that builds custom multi-site content management systems for luxury hospitality groups, enabling individual hotel properties to maintain distinct brand identities while benefiting from centralized digital infrastructure.

1 investor

Weav provides an API that enables small businesses to integrate with financial institutions and commerce platforms.

1 investor

Weava is a research and content management tool that allows users to save, highlight, and organize web pages and PDFs through a Chrome extension and web application. It serves researchers, students, and knowledge workers who need to manage and collaborate on digital content.

1 investor

WeaveDB is a verifiable, decentralized database that combines cloud-level performance with permanent storage on Arweave, using zero-knowledge proofs to enable queries from any blockchain. It targets developers building applications and AI agents that require a verifiable data layer, and includes a dual-token system and tooling such as an SDK, ZK prover, and validator network.

1 investor

Weave OS offers Code Quality, a tool that tracks production incidents, traces bugs to their source code commits, monitors revert rates across engineers and repositories, and identifies unstable codebases to help engineering teams catch quality issues early. The platform targets software development teams and repositories.

1 investor

Weavy provides prebuilt, embeddable collaboration components—real-time chat, file sync, presence, and search—delivered via a single SDK and backend that developers wire into their own apps. It targets engineers building across frameworks like React, Replit, and Retool who want to add collaboration features without building them from scratch.

1 investor

Personal portfolio site of a UK-based freelance web designer, developer, and AI software engineer who builds custom websites, web apps, eCommerce stores, and content management systems for clients worldwide. Services span frontend and backend development, SEO, AI integration, and web3/blockchain projects.

1 investor

Designly is a web design agency that builds high-converting websites for ecommerce and business clients, with expertise in conversion rate optimization and traffic analysis. The company helps clients understand their customers and create engaging websites that drive business results.

1 investor

Webisoft provides product development services including rapid prototyping and early-stage project support to help companies visualize, test, and validate new ideas.

1 investor

Webnode is a website builder that enables small businesses, craftspeople, and individuals to create professional websites without coding. The platform uses AI to generate website content and design automatically, and offers tools for online stores, booking systems, email, and SEO.

1 investor

Webstudio is an open-source visual website builder that gives designers and developers full control over CSS, breakpoints, and rendering, with integrations for external CMS, CRM, and API data sources. It offers hosting via Webstudio Cloud (backed by Cloudflare) or self-hosting, and supports AI agent automation through its CLI and MCP.

1 investor

Wechaty is an open-source RPA chatbot SDK that lets developers build conversational chatbots with a few lines of code. It offers cross-platform support and features such as contact, room, and friendship management, aimed at developers building chatbot applications.

1 investor

wehave provides a partnership management platform (SponsorshipOS) designed for sports clubs to manage sponsorships, contracts, hospitality, guest lists, and partner communications in a single system. It replaces fragmented tools like spreadsheets, email, and generic CRMs with automated workflows and reporting tailored for commercial partnership teams.

1 investor

WhereScape RED is a data automation and metadata management platform that helps organizations design, build, and automate data warehouse and data lake operations. The product targets data engineering and IT teams working with cloud and on-premises data platforms.

1 investor

Whiteboard is a digital agency that helps organizations build brands and digital experiences through strategy, design, and development across three specialized studios: Digital Branding, Digital Platforms, and Digital Activation. The firm works with startups and established organizations seeking digital transformation, focusing on clients with mission-driven or impact-oriented objectives.

1 investor

A blockchain research and training platform that provides experimental infrastructure for scientific blockchain research, supporting consortium chains like Fabric with features for chain creation, deployment, and visual monitoring.

1 investor

WhoAPI provides domain information and WHOIS data APIs for developers, freelancers, and enterprises to query and verify domain ownership and registration details. The company serves a broad customer base ranging from startups to Fortune 500 corporations.

1 investor

Ypqc is a unified post-quantum cryptography library supporting seven quantum-resistant encryption algorithms compliant with NIST global standards and domestic KpqC standards. The library provides implementations for C, Java, and WebAssembly platforms and serves government, financial, cloud, IoT, and embedded systems sectors.

1 investor

Wiarframe was an augmented reality prototyping tool that let designers build AR experiences without extensive technical work. The product has since been discontinued after failing to reach a viable market.

1 investor

Widgetbook is a package for building Flutter user interfaces in isolation, letting developers work on edge cases and hard-to-reach UI states without running the full app. Its cloud offering lets teams publish builds and embed use cases in wikis, Markdown, and Figma so designers, PMs, and clients can review UIs.

1 investor

Wikifactory provides a collaboration platform for engineers and makers to design and build projects together, with tools for CAD file management, version control, and supplier collaboration.

1 investor

Wikitude provided an augmented reality SDK that let mobile developers add or build AR features into iOS, Android, and Windows apps, and offered cloud/studio tools for hosting image and object targets. The service was wound down in September 2024, with the team now focused on headworn XR experiences.

1 investor

Wild Moose builds an AI-powered on-call copilot that automates root cause analysis for production incidents, designed for engineering teams in fast-moving environments. The platform reduces investigation time and helps organizations resolve incidents faster while reducing the on-call burden on engineers.

1 investor

Wildcard helps ecommerce and retail teams monitor how their products appear in AI shopping systems, identify improvements needed, and measure the impact on commercial outcomes. The platform connects product visibility insights to catalog work and sales metrics as shopping increasingly shifts to AI-mediated discovery.

1 investor