Developer Tools Startups

apptotech specializes in developing applications that work seamlessly across multiple operating systems and devices. The company delivers cross-platform solutions designed to maximize reach and impact for businesses targeting users on different devices.

1 investor

Apropo provides software estimation and quoting tools designed for agencies to generate accurate, fast, and client-friendly project quotes. The platform serves software agencies and their sales and delivery teams.

1 investor

Apryse provides an SDK and toolkit for building, viewing, editing, converting, and extracting data from documents across 100+ file formats, including PDF, Office, and CAD files. It serves developers and enterprises building document workflows and AI/automation pipelines, with support for web, server, and mobile environments.

1 investor

Apsy provides an AI-driven platform for building mobile and web applications without traditional coding, targeting entrepreneurs, developers, and designers. The platform uses proprietary AI-Driven App Building (ADAB) technology to automate app development from concept to deployment.

1 investor

Aptara provides custom content development, design, and publishing services for enterprises, transforming static content into digital formats for revenue generation, training, and operations. The company serves Fortune 500 companies and industry leaders across multiple sectors, leveraging expertise in content strategy, document processing, and digital publishing technologies.

1 investor

AQ provides a workspace platform for distributed teams to collaboratively develop with AI agents, allowing real-time agent session sharing across timezones without requiring local machine dependencies. The platform enables seamless handoffs, live debugging, and asynchronous code review for remote development teams.

1 investor

Aqua Voice is an AI-powered voice-to-text application that converts speech into refined text in real time for use across apps, from coding to writing and team communication. It serves developers, content creators, and professionals seeking faster typing alternatives with accuracy optimized for technical and natural language contexts.

1 investor

Aquarium built AI quality improvement technology for computer vision and natural language processing systems. The company has been acquired by Notion and is winding down its products.

1 investor

Arato provides a platform and tools that support teams building generative AI applications across the full lifecycle, from planning to production deployment. It targets software development and engineering teams adopting Gen AI in enterprise settings.

1 investor

Arcimus sources and filters engineering candidates for technical hiring, using technical founder judgment instead of resume keywords or automated filters. The service helps companies define what great engineering looks like for their specific codebase and challenges, then identifies and introduces matching candidates.

1 investor

Arctan provides audio preprocessing and noise-suppression technology for voice AI and speech-to-text systems, isolating the primary speaker to reduce word error rate and wasted LLM calls on real-world calls with background noise and cross-talk. It targets developers and enterprises building voice agents, offering cloud-to-local deployment.

1 investor

Arcten builds long-horizon autonomous agents for research and coding tasks. The company has roots in AI research at Caltech.

1 investor

Arctic Digital is a software development agency that builds web and mobile applications using frameworks like React, Next.js, and React Native, and also offers AI solutions and Web3/blockchain integrations. It works as an embedded team for startups and established businesses, providing services from MVP prototyping to application modernization.

1 investor

Arcweave is a platform for designing, playtesting, and exporting narrative-driven game content. It enables game developers and narrative designers to manage story structure, characters, and logic in one place, then export to major game engines like Unity, Unreal, and Godot.

1 investor

Ardor builds tools and infrastructure for creating, deploying, and scaling AI agents, with a focus on making AI development accessible and operational for enterprises.

1 investor

Argenova develops self-service, mobile, and web technology solutions for businesses. It is a software services provider based in Turkey.

1 investor

Argon provides software supply chain security that connects to existing CI/CD pipelines via an agentless implementation to map development environments, assets, code, and user activities, and uses code-tampering detection to prevent supply chain attacks. The company serves enterprises securing their software build and release process, and was acquired by Aqua Security.

1 investor

STIMULUS is an end-to-end Model-Based Systems Engineering (MBSE) and test automation platform that extends SysML modeling to capture functional requirements and automatically generate test vectors. The solution enables system architects, developers, and validation teams to simulate, validate, and test system behavior against requirements with minimal manual effort.

1 investor

The site presents a listing of code repositories owned by various users (such as programming languages, CLI tools, and developer utilities), functioning as a git repository hosting or index platform for developers.

1 investor

Arithmo offers a lightweight proxy that captures production traces from a company's existing LLM API calls and uses them to fine-tune smaller, distilled models tailored to that workload. The distilled models are benchmarked and tested against the originals to deliver faster, more accurate, and cheaper inference, with continuous learning as traffic changes.

1 investor

Arklex Platform is a testing and evaluation tool that allows AI engineers to validate agents before production deployment through simulated multi-turn conversations and LLM-powered metrics. It serves AI teams across engineering, QA, and product roles who need repeatable evaluation pipelines without custom testing infrastructure.

1 investor

Elysium CADfeature is a tool that enables compatible data sharing between different CAD software applications by converting CAD files while preserving original data and preventing loss during format conversion. It supports multiple CAD formats and integrates CAD data to streamline design workflows for engineers and designers.

1 investor

Armorer Labs provides continuous security verification for AI agents, testing them with simulated attacks, generating verified fixes, and monitoring each agent action in production to detect and block threats like prompt injection, goal hijacking, and data leaks. It serves companies in regulated industries that are deploying their own AI agents.

1 investor

Armur AI builds a swarm of autonomous AI agents designed to perform coordinated security testing and penetration testing on cloud infrastructure, APIs, and web applications. The platform chains vulnerabilities across multiple attack surfaces the way human attackers would, with reasoning that is auditable and reproducible.

1 investor