Developer Tools Startups

CalcTree is a no/low-code platform that automates calculation and workflow tasks for engineers, reducing time spent rebuilding calculations and managing data. It serves engineers in the construction and infrastructure sectors to support design and collaboration.

3 investors

Calimero is an open-source app platform for building privacy-preserving, decentralized applications where user data stays encrypted end-to-end on the owner's own devices rather than on central servers. Developers write app logic in Rust and connect from JavaScript, Python, Swift, or Kotlin, with encryption, peer-to-peer sync, and networking handled by the platform's WASM runtime across servers, desktops, browsers, and mobile.

3 investors

Chronosphere is an observability platform for microservices and containers, offering an end-to-end observability solution and a telemetry pipeline (from the creators of Fluent Bit and Calyptia) to collect, transform, and route telemetry data while controlling cost and complexity. It serves cloud-native and DevOps engineering teams looking to detect and remediate issues and reduce observability spend.

3 investors

Canyon offers a workflow intelligence layer that gives enterprises visibility into the cost and performance of AI workflows across models, agents, and tool calls. It routes and schedules model serving to cut spend and provides per-workflow, per-persona policy controls for governing AI use.

3 investors

CapLinked provides a secure platform for document sharing, due diligence, and managing business transactions such as deals. It serves startups through multinational corporations across industries including investment banking, private equity, legal services, and real estate.

3 investors

Para builds developer tools for interacting with blockchains, including wallets, protocols, and products. It serves developers building onchain applications in the crypto space.

3 investors

Cased uses AI to automate cloud infrastructure management, letting developers describe what they want to deploy and where while the tool handles tools like Terraform, Kubernetes, Docker, and AWS. It targets development teams that lack dedicated infrastructure specialists.

3 investors

Cesanta develops embedded networking software and IoT device management solutions, including firmware frameworks and cloud platforms for connected products. The company serves enterprises ranging from startups to Fortune 500 companies.

3 investors

Chakra Labs develops high-fidelity simulation environments and research infrastructure for training and evaluating frontier AI models on computer use tasks. The platform provides containerized reinforcement learning environments designed for autonomous agent research, with support for both GUI and programmatic interactions.

3 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.

3 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.

3 investors

Checksum provides automated quality verification for AI-generated code by simulating production environments and validating code against real runtime signals before deployment. The platform serves engineering teams that use AI agents to generate code, catching bugs in the interaction layer between databases, APIs, configs, and user behavior.

3 investors

cheqd Studio provides APIs and tools to build trusted digital credential ecosystems with decentralized identifiers, trust registries, and payment infrastructure. It serves credential issuers, consortia, schemes, and enterprises implementing eIDAS 2.0-compliant digital identity solutions.

3 investors

Chift provides a unified API platform that enables B2B software companies to integrate financial data and connect business tools through native integrations that users can activate in one click. The company serves software companies in Europe seeking to simplify integrations for their users.

3 investors

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

3 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.

3 investors

Causal Dynamics Lab is an AI research lab building products that enable machines to reason through cause and effect relationships and learn from experience without forgetting. The company focuses on production software as its initial domain, developing AI systems that provide interpretable reasoning, continuous learning, and efficient inference.

3 investors

CIQ is an enterprise infrastructure software company that builds and supports the Linux, HPC, and AI infrastructure stack from the kernel to the orchestrator, serving enterprises, research institutions, and government agencies.

3 investors

Circlemind offers a real-time browser agent API for developers and a no-code general AI agent for building automations.

3 investors

ClawMart provides AI-powered product management skills for software teams, including PRD writing, feedback synthesis, roadmap planning, and documentation automation. The platform integrates with tools like Linear, Jira, and Notion to assist product managers with synthesis work and decision-making support.

3 investors

Cline is an open source AI coding agent runtime that developers use inside their IDE, terminal, or embedded via an SDK to plan and execute coordinated multi-file code changes, run terminal commands, and automate workflows in CI pipelines. It works with any major model provider (Claude, GPT, Gemini, local Ollama/LM Studio, or OpenAI-compatible endpoints) using a bring-your-own-key approach.

3 investors

Cloudhouse helps enterprises safely execute infrastructure changes—patches, migrations, and modernizations—on legacy platforms without breaking mission-critical applications. The company makes such changes visible, evidenced, and recoverable for organizations running older operating systems and applications that cannot be easily rewritten.

3 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.

3 investors

CloudQuery provides cloud governance teams with unified visibility and management across multiple cloud providers and accounts. The platform enables teams to track cloud assets, query infrastructure via SQL or natural language, enforce compliance policies, and automate remediation workflows.

3 investors