Developer Tools Startups

Agno provides AgentOS, a self-hosted platform and framework for building, running, and managing AI agents, teams of agents, and workflows, with APIs for sessions, memory, knowledge, and tracing plus a control-plane UI. It targets engineering teams at companies building agents, running entirely within the customer's own cloud (AWS, GCP, Railway) for data privacy.

1 investor

Phone Harness is an open-source framework that lets AI agents operate iPhone and Android devices—whether personal or cloud-hosted—by tapping, typing, and scrolling, without requiring jailbreaking, APIs, or app installation. It serves developers building phone automation and agent-driven mobile control.

1 investor

Pieces is an AI memory product that automatically captures a person's work as it happens — across meetings, docs, messages, tabs, and chats — and keeps it current so AI tools and agents are grounded in the user's actual context. Its data stays on-device by default, giving users control over what is captured.

1 investor

Pig provides a developer SDK for building automations that control Windows applications, using computer-native actions like clicking, typing, and screenshots. It supports self-hosted worker machines and lets developers transfer control to human operators when oversight is needed.

1 investor

Piksel is a software consultancy that builds custom software, system integrations, content management systems, and AI-powered tools for B2B and B2C clients. It also offers IT consulting and application development across web and mobile platforms.

1 investor

Pinnacle provides an API for sending RCS, SMS, MMS, and iMessage messages with features like rich cards, carousels, and quick replies. The platform serves businesses of all sizes that need to send marketing campaigns, transactional alerts, and customer conversations at scale.

1 investor

Pipecat is an open source framework for building voice and multimodal conversational AI applications. It is supported by the Pipecat community and the Daily.co engineering team.

1 investor

Pique is a Mac-based meeting note-taking application that automatically converts meeting transcripts into interactive mind maps and AI-generated notes, action items, and follow-up emails. The product runs locally on users' devices and includes an AI assistant called Pico that provides context-aware meeting summaries and pre-reads.

1 investor

Pixelapse provides version control and collaboration tools for designers, letting them track revisions of their work and share and discuss designs with colleagues and others. It functions as a "GitHub for designers" within the design software and collaboration space.

1 investor

Placeme is a Greek technology company that develops custom Extended Reality applications using 3D, augmented reality, and virtual reality technologies for businesses. The company offers consultation, design, development, and implementation services to help clients create immersive experiences and enhance operations.

1 investor

PLAINER develops a no-code software enablement platform that lets SaaS and software vendors build interactive product demos in virtual environments for sales, onboarding, internal demos, and training. Based in Japan, it also supports growth for software/SaaS companies across the software lifecycle of selling, choosing, and using tools.

1 investor

Plane provides a project management platform with dedicated teamspaces that allow groups of coworkers to organize projects, track work assignments, and manage team-specific metrics and knowledge separately from organization-wide views.

1 investor

Teambit analyzes code, meeting time, and interactions to measure and improve the performance of software development teams, delivering objective metrics. It is aimed at engineering teams and their managers.

1 investor

Platform Eco provides an integration, orchestration, and automation solution designed to replace foreign integration platforms for Russian enterprises. The solution enables complex cross-system business process automation, API management, and microservice orchestration with transaction integrity and real-time capabilities.

1 investor

PLATO is a software testing and technology services company that provides quality assurance services to global clients while creating technology careers for Indigenous peoples across Canada through its train-and-employ model.

1 investor

Plausible is a privacy-focused web analytics tool positioned as an alternative to Google Analytics, offering a lightweight, cookie-free tracking script with a simple dashboard covering traffic, SEO, campaigns, goals, funnels and revenue. It serves website owners and businesses of all sizes and hosts all data on EU-owned infrastructure, with an open-source codebase.

1 investor

Playbit builds a runtime for creating collaborative, graphical "personal-scale" applications that developers can write once and run across desktop, web, and mobile via a minimal ABI-stable syscall interface, running apps as WASM or as natively linked code. Aimed at developers building creative tools, editors, multiplayer apps, and utilities, it provides a system layer with capability-based sandboxing plus tools for debugging, profiling, syncing, and distribution; the initial release supports macOS.

1 investor

Playment is a fully managed data labeling platform that produces annotated training data for computer vision models, supporting image and video annotation types such as bounding boxes, cuboids, polygons, and polylines. It serves companies and research institutions in autonomous vehicles, drones, mapping, satellite imagery, precision agriculture, retail, and sports analytics.

1 investor

Playpower Labs builds learning products and provides data science, product design, and software development services to education organizations. The company develops cognitive assessment platforms and AI software for paper-digital integration to improve large-scale learning and assessment outcomes.

1 investor

Playroom is a US developer of a toolkit for building multiplayer games, offering a low-code SDK together with AI-assisted tools. It is aimed at indie developers, small studios, and students who want to add multiplayer functionality without building networking infrastructure from scratch.

1 investor

PlebLab is a builder community and hackerspace for Bitcoin and Lightning Network developers, offering workshops, hackathons, mentorship, and coworking memberships. It provides tiered membership plans with access to mentors, advisors, events, and startup support for early-stage builders.

1 investor

Plexus Aero provides a software data stack and monitoring platform designed for hardware fleets and physical systems. The platform enables teams managing drones, devices, and hardware-based systems to deploy, monitor, and debug their hardware similar to how software teams manage code deployments.

1 investor

Ploomber provides cloud infrastructure for organizations to deploy and operate AI applications at scale.

1 investor

Plot generates complete, designed web pages from a description of the user's business, assembling sections like hero, story, and gallery that can be edited, swapped, or rearranged independently in a live editor. It is a website-building tool.

1 investor