Developer Tools Startups

Tsunagu.AI offered a low-code service for web engineers that used AI to remove repetitive tasks in website development. The company states this business has since been transferred to CFP Consulting.

1 investor

Tuist is a development tool that enhances Apple's native build tooling to help teams maintain development velocity and code organization as their iOS/macOS projects scale. The company serves app developers and teams building for the Apple ecosystem who struggle with build complexity and tooling overhead.

1 investor

Tumult develops Hype, an HTML5 animation and interactive content creation software used by designers and developers to build animations, infographics, prototypes, and web-based content.

1 investor

Turbopuffer is a search engine designed to make large datasets searchable and queryable at scale. The company serves enterprises and AI applications that require fast, reliable search infrastructure for processing and indexing large volumes of data.

1 investor

Turnkey provides crypto wallet infrastructure for coordinating payments across internal, custodial wallets, with policy controls over fund flows, limits, roles, and approvals. Its Payment Orchestration is aimed at company payment and treasury teams managing multichain operational wallets, gas sponsorship, and automated transaction routing.

1 investor

Yelp operates a platform where businesses can claim and manage their business pages, connect with customers through reviews and messaging, and access integrated AI-powered services for reservation and guest management.

1 investor

Turntable is a collaborative workspace for developing, deploying, and monitoring data reporting stacks, supporting dbt, SQLMesh, and SQL queries. The platform enables data teams to collaborate on transformations, maintain lineage visibility, and deploy changes with built-in data quality monitoring.

1 investor

Tusk is an AI agent that automatically generates unit tests for pull requests by understanding codebase and business context. The product helps software engineers save time on testing work.

1 investor

Tuva builds Rao, an AI research collaborator that maintains a living knowledge graph of a scientist's project context and runs agents on top of it for tasks like literature search, data analysis, script generation, math derivations, and writing. It integrates with tools researchers already use (VS Code, command line, Notion, Google Drive) and shares context with agents like Claude, Codex, and Cursor via MCP.

1 investor

Tweeks is an AI-powered browser extension that allows users to modify how websites look and behave through natural language descriptions without requiring code. The tool generates custom modifications that run in a sandbox and can be shared across a community of 4,000+ published tweaks.

1 investor

Tweezr provides a system intelligence platform that analyzes and documents legacy banking and insurance core systems, enabling teams to safely understand and evolve them. The platform is designed for financial institutions and built to support code modernization, migrations, and regulatory audits without operational risk.

1 investor

TwicPics provides image and video optimization and delivery tools for developers and web professionals, handling server-side compression, caching, and responsive media processing. The company, now part of brand management platform Frontify, targets websites needing faster performance and optimized media quality.

1 investor

Twine is an open-source tool for authoring interactive fiction and story-based games without requiring coding knowledge, though it supports variables, conditional logic, and custom scripting for advanced users. Stories created with Twine publish directly to HTML and can be shared freely, including for commercial purposes.

1 investor

TxnLab is a three-person studio building applications and tools for the decentralized web, ranging from .algo naming services to private AI. It also provides public infrastructure that other developers can integrate into their own products.

1 investor

Patina Systems builds "spontaneous software" — everyday tools that users can customize and share on demand. The company focuses on self-expression, communication, operating systems, and browsers.

1 investor

TypeDB is a graph database with a strict type system and n-ary relations, using its own declarative query language (TypeQL) to model interconnected data as knowledge graphs. It targets developers building agentic AI systems, cyber threat intelligence, and robotics applications, and offers open-source, cloud, and web studio options.

1 investor

Typedream is a no-code website builder that enables anyone to create websites without coding, designed for creators, builders, and side hustlers. The company provides templates, design blocks, and a simple interface to help users build landing pages and websites quickly.

1 investor

UBIO builds AI agents that automatically create and self-repair web automations, replacing fragile hand-coded scripts, and runs over a billion automations monthly at scale. Its technology serves travel brands (for hotel content, rates, and price intelligence), job boards (to improve candidate conversion), and online retailers (to improve shopping conversions).

1 investor

Uelz provides an API for subscription management and usage-based billing, letting companies handle plans, discounts, upgrades, and dynamic invoicing while integrating with existing systems and payment gateways. This product is aimed at telecom operators managing large volumes of transactions and subscriptions.

1 investor

UI-licious offers an AI-assisted platform for automating UI tests, letting teams turn screenshots and recordings into readable low-code test scripts written in plain English. It includes an AI assistant (TAMI) that suggests, documents, and fixes tests, a cloud grid for parallel test execution, and shared reporting for QA, developers, and product managers.

1 investor

Ultralight is a GPU-accelerated HTML rendering toolkit that embeds modern web content in games and native applications across Windows, macOS, Linux, and game consoles. Built on a lightweight WebKit fork, it serves game developers and native app developers who need high-performance, resource-efficient HTML rendering.

1 investor

Ultralytics develops YOLO, an open-source real-time object detection and computer vision platform used across industries for visual AI tasks including surveillance, quality control, robotics, and autonomous systems. The platform serves enterprises, researchers, and developers across construction, manufacturing, retail, agriculture, energy, healthcare, and transportation sectors.

1 investor

Ultravox builds a voice AI platform that enables real-time conversational AI through a purpose-built architecture for spoken interaction, serving teams looking to integrate voice capabilities into their applications.

1 investor

Umbraco is a content management system (CMS) designed for enterprises and partners. The company emphasizes developer experience and customer service while pursuing sustainability and global growth objectives.

1 investor