Developer Tools Startups

Charm builds open-source tools and libraries for creating user interfaces and applications in the terminal, including command-line interface frameworks, markdown readers, and components for developers. The company serves software developers and infrastructure teams who need terminal-based tooling and CLI development frameworks.

2 investors

Charms is a universal app protocol built on Bitcoin that enables developers to deploy decentralized applications and digital assets on the Bitcoin network using mainstream programming languages, with cross-chain interoperability powered by zero-knowledge proofs and metaprotocol technology.

2 investors

Chassy provides a software platform for testing, deploying, and monitoring AI models and software on edge hardware devices ranging from robots and drones to microcontrollers. The platform serves hardware and robotics companies with tools for model deployment, fleet management, secure inference at the edge, and autonomous testing.

2 investors

Checkbook offers a push payments platform for disbursing payments at scale via digital checks, ACH, real-time payments, push-to-card, virtual cards, and printed or mailed checks. It provides a RESTful API, an online dashboard, and a white-label marketplace for businesses handling mass disbursements and payout flows.

2 investors

CheckiO develops game-based coding challenges for Python and TypeScript learners, with platforms at py.checkio.org and js.checkio.org, plus a space strategy game called Empire of Code. The platform serves individual coders improving their skills and educational institutions using CheckiO in classrooms.

2 investors

Checkmarx provides an application security (AppSec) platform that integrates into the software development lifecycle via developer-friendly APIs to embed security from development through deployment. The page describes its partner program for resellers, technology vendors, systems integrators, and managed service providers.

2 investors

Checksum provides AI agents that generate, execute, and automatically maintain end-to-end, CI, and API tests using Playwright, delivered as ready-to-use code in a company's repository. It targets software engineering and QA teams as a testing automation service priced by the number of workflows maintained.

2 investors

Chima builds AI and data-driven solutions for marketing and business performance, founded by award-winning researchers with expertise in AI technology.

2 investors

ChipStack develops AI-powered agents for semiconductor verification that automate RTL design testing and debug tasks traditionally requiring specialized expertise. The company serves design verification engineers and RTL designers in the semiconductor industry.

2 investors

Chkk provides a platform for managing Kubernetes upgrades and lifecycle operations, automating risk assessments, version tracking, and add-on compatibility management. It targets platform and DevOps engineering teams running Kubernetes across clouds such as EKS, GKE, and AKS, helping them reduce upgrade costs and prevent breakages.

2 investors

ChromaWay is a blockchain venture builder and the creator of Chromia, a relational blockchain platform that combines blockchain with relational databases to build decentralized applications. Founded in 2012, the company has developed stablecoins, land registry systems, and on-chain AI tools, working with partners such as banks, government registries, and the EU.

2 investors

Ciklum is a global product engineering and digital services company that combines software development, human-centered design, and applied AI to build digital products for clients. It serves fintech, retail, healthcare, and hi-tech industries, operating with engineers across EMEA, the US, and APAC.

2 investors

Ciphero provides a deterministic security layer that lets security teams observe, audit, and verify AI interactions across models, agents, and machines. Its engine combines proprietary verifiers (for prompt injection, malicious commands, secrets, and PII) with plain-English policies to inspect AI inputs, outputs, commands, and tool calls, and produce compliance-ready audit trails; its Orpheus product runs on endpoints to verify actions taken by coding agents like Claude Code, Codex, and Cursor.

2 investors

CipherStash provides queryable, field-level encryption for Postgres databases, keeping data encrypted while applications use it and allowing decryption only under identity-bound access policies. It targets development and security teams needing compliance (PCI DSS 4, HIPAA, SOC 2) with support for stores like Supabase, Neon, and RDS and plugins for Drizzle, Prisma, Auth0, and Clerk.

2 investors

CircuitLab provides web-based electronic circuit design and simulation software for engineers, students, and hobbyists to design, analyze, build, and share circuits. The platform enables collaborative iteration and sharing of circuit designs through browser-based tools.

2 investors

Cirrus Identity provides identity and access management solutions, including its Cirrus Works suite supporting single sign-on, multi-factor authentication, guest accounts, and multilateral federation (InCommon, eduGAIN). It serves universities, non-profits, research organizations, and healthcare institutions to enable Zero Trust and collaboration within the research and education community.

2 investors

Clay makes collaborative 3D design software that lets users create and work together on three-dimensional projects. The product targets anyone seeking accessible tools for group-based 3D creation.

2 investors

CloudFrame is a mainframe modernization company that transforms COBOL applications into maintainable, cloud-ready Java using its Atlas and CodeNavigator platform. It serves large enterprises, including Fortune 500 and Global 2000 organizations, across cloud, hybrid, and on-premises environments.

2 investors

Cloudify is an open-source cloud orchestration framework that lets users model applications and services and automate their entire life cycle. It provides tools including a manager, CLI, blueprints, and plugins for deployment and orchestration.

2 investors

CloudNine AI provides an associative enterprise context infrastructure that unifies and governs complex data across legacy systems without modifying source data. It serves organizations with data privacy, risk, and governance needs across healthcare, fintech, AI/ML, manufacturing, and other industries.

2 investors

A platform that allows web and mobile applications to use spreadsheets as their underlying database, with bidirectional syncing so that changes in the app update the spreadsheet and vice versa. It serves web developers looking for an alternative to building custom backends.

2 investors

Clover Security provides context-aware AI agents for product security that detect risks, run automated security reviews, generate threat models from codebases, and enforce security policies within engineering workflows. It targets product security (ProdSec) and security engineering teams, and includes controls for AI-generated code and AI-driven development.

2 investors

Clueso is an AI-powered video creation platform for sales enablement teams that transforms screen recordings into polished training videos and step-by-step guides. It serves sales enablement and revenue teams creating product training, onboarding, objection handling, and demo content.

2 investors

Clutch is a visual builder platform that enables creation of AI-powered, personalized websites using drag-and-drop agents, component libraries, and integration with existing tools and data. The platform serves e-commerce and web design teams seeking to increase conversions through conversational commerce, generative landing pages, and AI-driven search experiences.

2 investors